Sizing, selection and export guides for stainless steel instrumentation fittings and valves, from the FerruleX factory.https://ferrulex.com/https://ferrulex.com/blog/compression-fitting-sizes-od-vs-id/https://ferrulex.com/blog/compression-fitting-sizes-od-vs-id/Compression fitting sizes follow the tube OD, never the ID. The 3/16 trap, tube versus pipe ordering grammar, and a five-step checklist before you order.Mon, 01 Nov 2027 00:00:00 GMThttps://ferrulex.com/blog/polyethylene-vs-stainless-instrument-tubing/https://ferrulex.com/blog/polyethylene-vs-stainless-instrument-tubing/Polyethylene vs stainless steel instrument tubing: permeation leaks you cannot hear, temperature and fire limits, vibration, and where PE lines make sense.Mon, 25 Oct 2027 00:00:00 GMThttps://ferrulex.com/blog/ball-valve-vs-compression-valve/https://ferrulex.com/blog/ball-valve-vs-compression-valve/A compression valve is not a valve type. Separate the valve from the connection, compare what actually wears, and spec valve type and ends as two lines.Mon, 18 Oct 2027 00:00:00 GMThttps://ferrulex.com/blog/gate-valve-vs-ball-valve/https://ferrulex.com/blog/gate-valve-vs-ball-valve/Gate valve vs ball valve: how each seals, why gate valves fail to shut tight, quarter-turn economics, where gate still wins, and how to spec a replacement.Mon, 11 Oct 2027 00:00:00 GMThttps://ferrulex.com/blog/pipe-dope-teflon-tape-compression-fittings/https://ferrulex.com/blog/pipe-dope-teflon-tape-compression-fittings/Should you use Teflon tape or pipe dope on compression fittings? Where sealant helps, where it ruins the ferrule seal, and the lubricant makers allow.Mon, 04 Oct 2027 00:00:00 GMThttps://ferrulex.com/blog/sampling-systems-101/https://ferrulex.com/blog/sampling-systems-101/Sampling systems from take-off to analyzer: probe placement, double block and bleed, fast loops versus transport lag, conditioning with filters and orifices, and the final needle.Mon, 27 Sep 2027 00:00:00 GMThttps://ferrulex.com/blog/flanged-small-valves-guide/https://ferrulex.com/blog/flanged-small-valves-guide/Flanged small valves: the maintenance case for flanges, Class 150 versus PN 16 and PN 20, RF versus FF faces, stainless bolting practice, and the mating question.Mon, 20 Sep 2027 00:00:00 GMThttps://ferrulex.com/blog/metric-compression-fittings-guide/https://ferrulex.com/blog/metric-compression-fittings-guide/Metric compression fittings: the 6–25 mm tube range, why metric and inch ferrules never mix, M-thread versus G-thread tails, and DIN 2353 size logic.Mon, 13 Sep 2027 00:00:00 GMThttps://ferrulex.com/blog/is-stainless-steel-magnetic/https://ferrulex.com/blog/is-stainless-steel-magnetic/Is stainless steel magnetic? Austenitic, ferritic and martensitic behavior, why cold-worked 304 attracts a magnet, what magnetism does not tell you, and the test that works.Mon, 06 Sep 2027 00:00:00 GMThttps://ferrulex.com/blog/galvanic-corrosion-mixed-fittings/https://ferrulex.com/blog/galvanic-corrosion-mixed-fittings/Galvanic corrosion in mixed-metal fittings: the seawater nobility order, the area-ratio rule, real pair behavior from carbon steel to copper, and isolation that works.Mon, 30 Aug 2027 00:00:00 GMThttps://ferrulex.com/blog/nace-sour-service-materials/https://ferrulex.com/blog/nace-sour-service-materials/NACE MR0175 / ISO 15156 sour service basics: when the rules apply, hardness limits by alloy family, duplex envelopes, and the four numbers that decide the material.Mon, 23 Aug 2027 00:00:00 GMThttps://ferrulex.com/blog/oxygen-service-cleaning/https://ferrulex.com/blog/oxygen-service-cleaning/Oxygen service cleaning explained: why oxygen attacks contaminants, CGA G-4.1 and related standards, the cleaning and inspection process, and packaging for oxygen duty.Mon, 16 Aug 2027 00:00:00 GMThttps://ferrulex.com/blog/steam-service-stainless-valves/https://ferrulex.com/blog/steam-service-stainless-valves/Steam service on stainless valves: saturated steam temperature-pressure pairs, superheat and what it does to seals, PTFE seat boundaries, and water hammer prevention.Mon, 09 Aug 2027 00:00:00 GMThttps://ferrulex.com/blog/valve-packing-fugitive-emissions/https://ferrulex.com/blog/valve-packing-fugitive-emissions/Valve packing for fugitive emissions: PTFE vs graphite temperature bands, live-loading with Belleville springs, ISO 15848 classes, API 624/641, and TA-Luft.Mon, 02 Aug 2027 00:00:00 GMThttps://ferrulex.com/blog/ball-valve-seat-materials/https://ferrulex.com/blog/ball-valve-seat-materials/Ball valve seat materials compared: PTFE temperature bands, filled PTFE variants, PEEK boundaries, media compatibility limits, and how to write the seat on the RFQ.Mon, 26 Jul 2027 00:00:00 GMThttps://ferrulex.com/blog/stainless-pneumatic-manifold/https://ferrulex.com/blog/stainless-pneumatic-manifold/Building a stainless pneumatic manifold: when stainless FRL is worth it, filter-regulator-lubricator basics, distribution manifolds, and the component chain spec.Mon, 19 Jul 2027 00:00:00 GMThttps://ferrulex.com/blog/cylinder-connectors-guide/https://ferrulex.com/blog/cylinder-connectors-guide/Cylinder port connectors: M5 and G-thread port conventions, push-in vs compression vs threaded, vibration behavior at the rod end, and the NPT-on-BSPP trap.Mon, 12 Jul 2027 00:00:00 GMThttps://ferrulex.com/blog/throttle-valves-cylinder-speed/https://ferrulex.com/blog/throttle-valves-cylinder-speed/Air throttle valves explained: meter-out as the default for cylinder stability, the check-valve construction, mounting at the cylinder port, and why cylinders still run fast.Mon, 05 Jul 2027 00:00:00 GMThttps://ferrulex.com/blog/inline-filters-instrument-lines/https://ferrulex.com/blog/inline-filters-instrument-lines/Inline filters for instrument lines: what commissioning debris does to valves and transmitters, element choices and micron ratings, placement, and ΔP maintenance.Mon, 28 Jun 2027 00:00:00 GMThttps://ferrulex.com/blog/pneumatic-silencers-explained/https://ferrulex.com/blog/pneumatic-silencers-explained/Pneumatic silencers explained: how sintered elements cut exhaust noise, the clogging failure that slows valves, and when stainless bodies are the right spec.Mon, 21 Jun 2027 00:00:00 GMThttps://ferrulex.com/blog/rfq-glossary-25-terms/https://ferrulex.com/blog/rfq-glossary-25-terms/The RFQ glossary: 25 terms that decide whether a quote comes back right — sizes, threads, pressure classes, materials and certificates, defined once.Mon, 14 Jun 2027 00:00:00 GMThttps://ferrulex.com/blog/tube-bend-radius-rules/https://ferrulex.com/blog/tube-bend-radius-rules/Tube bend radius rules for stainless instrument tubing: why 3× OD is the working minimum, the thin-wall penalty, temper effects, and fitting straight-length needs.Mon, 07 Jun 2027 00:00:00 GMThttps://ferrulex.com/blog/pipe-schedule-numbers-explained/https://ferrulex.com/blog/pipe-schedule-numbers-explained/Pipe schedule numbers explained: why Schedule 40 and 80 change the wall but not the OD, the STD and XS equivalents, stainless S-suffix, and threading limits.Mon, 31 May 2027 00:00:00 GMThttps://ferrulex.com/blog/dash-numbers-field-guide/https://ferrulex.com/blog/dash-numbers-field-guide/Dash numbers decoded: dash ÷ 16 = inches, -6 is 3/8 inch tube OD not pipe size, the SAE J514 lineage, and the metric-twin trap.Mon, 24 May 2027 00:00:00 GMThttps://ferrulex.com/blog/grades-chart-field-guide/https://ferrulex.com/blog/grades-chart-field-guide/Stainless steel grades field guide: choose 304, 316, 316L, 310S, 321, 347 or 904L by media, temperature and welding — with PREN quick-compare.Mon, 17 May 2027 00:00:00 GMThttps://ferrulex.com/blog/chloride-scc-316-fittings/https://ferrulex.com/blog/chloride-scc-316-fittings/Chloride stress corrosion cracking of 304/316 stainless: the temperature-chloride threshold band, why 316L does not help, and when to upgrade to duplex or nickel alloys.Mon, 10 May 2027 00:00:00 GMThttps://ferrulex.com/blog/orifice-union-fittings/https://ferrulex.com/blog/orifice-union-fittings/Orifice union fittings: precision-drilled restriction plates inside a union body — bore sizing, protecting transmitters, damping impulse lines, and why not to drill your own.Mon, 03 May 2027 00:00:00 GMThttps://ferrulex.com/blog/gauge-snubbers-explained/https://ferrulex.com/blog/gauge-snubbers-explained/Gauge snubbers explained: how a fixed orifice, porous disc or piston snubber damps pulsation, sizing by fluid viscosity, and why a snubber is not a gauge valve.Mon, 26 Apr 2027 00:00:00 GMThttps://ferrulex.com/blog/socket-weld-vs-butt-weld-fittings/https://ferrulex.com/blog/socket-weld-vs-butt-weld-fittings/Socket weld vs butt weld fittings: the 1/16 in gap rule, NPS 2 convention, crevice and inspection differences, and which belongs on instrument lines.Mon, 19 Apr 2027 00:00:00 GMThttps://ferrulex.com/blog/instrument-manifold-styles/https://ferrulex.com/blog/instrument-manifold-styles/Instrument manifolds explained: 2-valve gauge isolation, 3-valve differential transmitter manifolds with equalizing sequence, 5-valve calibration without shutdown.Mon, 12 Apr 2027 00:00:00 GMThttps://ferrulex.com/blog/hex-plug-vs-flush-plug/https://ferrulex.com/blog/hex-plug-vs-flush-plug/Stainless steel hex plug vs flush plug: when to use socket flush plugs for dead-volume-free ports, square and flanged heads, and thread seal choice.Mon, 05 Apr 2027 00:00:00 GMThttps://ferrulex.com/blog/valve-sizing-too-big/https://ferrulex.com/blog/valve-sizing-too-big/Oversized valve problems: ball valve Cv values, near-seat throttling erosion, controllability bands, rangeability and why line-size matching mis-sizes valves.Mon, 29 Mar 2027 00:00:00 GMThttps://ferrulex.com/blog/tube-clamp-spacing-guide/https://ferrulex.com/blog/tube-clamp-spacing-guide/Instrument tube clamp spacing guide: recommended support spans by tube OD, clamp types, where not to clamp, and why guides — not codes — set the numbers.Mon, 22 Mar 2027 00:00:00 GMThttps://ferrulex.com/blog/investment-cast-vs-machined-fittings/https://ferrulex.com/blog/investment-cast-vs-machined-fittings/Investment cast vs machined stainless fittings: how lost-wax casting and CNC machining differ on cost curves, tolerances, surface finish and pressure integrity.Mon, 15 Mar 2027 00:00:00 GMThttps://ferrulex.com/blog/quick-screw-vs-compression/https://ferrulex.com/blog/quick-screw-vs-compression/Quick-screw vs compression fittings: how DIN 2353 bite-type and push-on quick-screw fittings grip, pressure classes, reassembly and where each belongs.Mon, 08 Mar 2027 00:00:00 GMThttps://ferrulex.com/blog/bsp-thread-seal-bspp-vs-bspt/https://ferrulex.com/blog/bsp-thread-seal-bspp-vs-bspt/BSPP vs BSPT sealing: why parallel G threads need a washer or bonded seal, tapered R threads seal on the flank, plus bonded seal dimensions by size.Mon, 01 Mar 2027 00:00:00 GMThttps://ferrulex.com/blog/expansion-joint-movement-types/https://ferrulex.com/blog/expansion-joint-movement-types/Stainless expansion joint movement types: which bellows absorbs axial, lateral and angular, how to calculate thermal growth, anchors, guides and cycle life.Mon, 22 Feb 2027 00:00:00 GMThttps://ferrulex.com/blog/push-to-connect-stainless-limits/https://ferrulex.com/blog/push-to-connect-stainless-limits/Stainless push-to-connect fittings: how the seal really works, tube hardness and tolerance limits, pressure and temperature bands, and where compression still wins.Mon, 15 Feb 2027 00:00:00 GMThttps://ferrulex.com/blog/check-valve-cracking-pressure/https://ferrulex.com/blog/check-valve-cracking-pressure/Check valve cracking pressure explained: definition, typical ranges by valve type, the reseal trap, when it matters, and how to write it on the RFQ.Mon, 08 Feb 2027 00:00:00 GMThttps://ferrulex.com/blog/sanitary-ball-valves-guide/https://ferrulex.com/blog/sanitary-ball-valves-guide/Sanitary stainless ball valves: what sanitary actually means — full bore, no dead legs, drainable design, Ra surface — plus 3-A vs ASME BPE and the RFQ lines.Mon, 01 Feb 2027 00:00:00 GMThttps://ferrulex.com/blog/read-valve-symbols-pid/https://ferrulex.com/blog/read-valve-symbols-pid/Read valve symbols on a P&ID: what the bowtie forms mean, what they never tell you (class, ends, seat, trim) and how to turn the symbol list into an RFQ list.Mon, 25 Jan 2027 00:00:00 GMThttps://ferrulex.com/blog/stainless-steel-coil-tubing/https://ferrulex.com/blog/stainless-steel-coil-tubing/Stainless steel coil tubing for long instrument runs: sizes, 316 vs 316L, ASTM A269 testing, coil lengths, on-site cutting and the RFQ lines to write.Mon, 18 Jan 2027 00:00:00 GMThttps://ferrulex.com/blog/identify-npt-vs-bsp-threads/https://ferrulex.com/blog/identify-npt-vs-bsp-threads/Identify NPT vs BSP threads in five minutes: gauge the TPI, measure the major OD, check form and taper against a verified chart — then write it on the RFQ.Mon, 11 Jan 2027 00:00:00 GMThttps://ferrulex.com/blog/valve-trim-materials/https://ferrulex.com/blog/valve-trim-materials/Valve trim materials decoded: what 316, 17-4 PH and 410/420 mean for valve bodies, balls, stems, seats and packing — and how to write trim lines on the RFQ.Mon, 04 Jan 2027 00:00:00 GMThttps://ferrulex.com/blog/how-to-specify-metal-hose-assembly/https://ferrulex.com/blog/how-to-specify-metal-hose-assembly/How to specify a corrugated metal hose assembly: media, pressure, temperature, length, end connections, movement duty and test documentation for a clean RFQ.Thu, 01 Oct 2026 00:00:00 GMThttps://ferrulex.com/blog/corrugated-vs-braided-stainless-hose/https://ferrulex.com/blog/corrugated-vs-braided-stainless-hose/Corrugated stainless steel hose vs braided hose: how the corrugated core and wire braid work together, flexibility vs pressure, and how to choose.Mon, 28 Sep 2026 00:00:00 GMThttps://ferrulex.com/blog/electropolishing-vs-passivation/https://ferrulex.com/blog/electropolishing-vs-passivation/Electropolishing vs passivation for stainless fittings: EP removes material and smooths to a lower Ra; passivation restores the oxide film. When to pay for EP.Mon, 28 Sep 2026 00:00:00 GMThttps://ferrulex.com/blog/instrument-impulse-lines/https://ferrulex.com/blog/instrument-impulse-lines/Impulse lines: the small-bore tube between process tap and transmitter — slope and drainage routing rules, tube vs pipe, freeze protection, and manifolds.Mon, 28 Sep 2026 00:00:00 GMThttps://ferrulex.com/blog/needle-valve-vs-globe-valve/https://ferrulex.com/blog/needle-valve-vs-globe-valve/Needle valve vs globe valve: the needle is the globe-family member built for fine instrument control — trim, precision and duty compared for instrument lines.Mon, 28 Sep 2026 00:00:00 GMThttps://ferrulex.com/blog/proof-pressure-vs-burst-pressure/https://ferrulex.com/blog/proof-pressure-vs-burst-pressure/Working, proof and burst pressure on a datasheet: what each number is for, the 1.5x test convention, CWP vs WOG terminology, and what to state on the RFQ.Mon, 28 Sep 2026 00:00:00 GMThttps://ferrulex.com/blog/what-is-cv-valve/https://ferrulex.com/blog/what-is-cv-valve/What Cv means on a valve datasheet: the GPM-per-psi flow coefficient definition, what high and low Cv tell instrument buyers, and how to use maker Cv tables.Mon, 28 Sep 2026 00:00:00 GMThttps://ferrulex.com/blog/316-vs-316l-stainless-steel/https://ferrulex.com/blog/316-vs-316l-stainless-steel/316 vs 316L stainless steel for fittings and tubing: carbon limits, weld sensitization, and when the low-carbon grade is worth paying for on the RFQ.Sun, 27 Sep 2026 00:00:00 GMThttps://ferrulex.com/blog/bend-stainless-steel-tubing/https://ferrulex.com/blog/bend-stainless-steel-tubing/How to bend stainless steel tubing without kinking: minimum bend radius by tube size, hand bender technique, springback, and when to use an elbow instead.Sun, 27 Sep 2026 00:00:00 GMThttps://ferrulex.com/blog/bite-type-fittings-din-2353/https://ferrulex.com/blog/bite-type-fittings-din-2353/Bite-type fittings explained: DIN 2353 compression fittings, the 24-degree cone and cutting ring, LL/L/S series and their working pressure ranges.Sun, 27 Sep 2026 00:00:00 GMThttps://ferrulex.com/blog/dash-size-chart/https://ferrulex.com/blog/dash-size-chart/Dash size chart: how -4 to -32 dash numbers map to fractional inch and millimeter tube sizes in SAE/JIC hydraulic fittings, and how to read a spec line.Sun, 27 Sep 2026 00:00:00 GMThttps://ferrulex.com/blog/double-block-and-bleed-valve/https://ferrulex.com/blog/double-block-and-bleed-valve/Double block and bleed valves explained: two barriers plus a bleed for positive isolation, single vs double configurations, and gauge duty guidance.Sun, 27 Sep 2026 00:00:00 GMThttps://ferrulex.com/blog/en-10204-3-1-certificate/https://ferrulex.com/blog/en-10204-3-1-certificate/EN 10204 3.1 explained for stainless fittings buyers: the 2.1/2.2/3.1/3.2 type table, MTR equivalence, heat-number traceability and what to write on the RFQ.Sun, 27 Sep 2026 00:00:00 GMThttps://ferrulex.com/blog/flare-vs-compression-fittings/https://ferrulex.com/blog/flare-vs-compression-fittings/Flare vs compression fittings on stainless tube: metal-to-metal cone seal against ferrule bite, the tooling each needs, and where each connection wins.Sun, 27 Sep 2026 00:00:00 GMThttps://ferrulex.com/blog/passivation-stainless-steel/https://ferrulex.com/blog/passivation-stainless-steel/Passivation of stainless steel fittings: what nitric and citric acid passivation do, why pickling handles weld tint, and how to prevent rust after fabrication.Sun, 27 Sep 2026 00:00:00 GMThttps://ferrulex.com/blog/pipe-vs-tube-difference/https://ferrulex.com/blog/pipe-vs-tube-difference/Pipe vs tube: the difference between nominal NPS pipe sizing with schedule walls and actual-OD tube sizing, and why it changes the fitting you order.Sun, 27 Sep 2026 00:00:00 GMThttps://ferrulex.com/blog/pitting-corrosion-stainless-steel/https://ferrulex.com/blog/pitting-corrosion-stainless-steel/Pitting corrosion in stainless steel fittings: why 316 still pits in chlorides, the PREN difference by grade, and how design and maintenance prevent it.Sun, 27 Sep 2026 00:00:00 GMThttps://ferrulex.com/blog/thread-galling-stainless-steel/https://ferrulex.com/blog/thread-galling-stainless-steel/Thread galling on stainless steel fittings: why austenitic threads seize, how to prevent galling during assembly, and what to do when a joint galls.Sun, 27 Sep 2026 00:00:00 GMThttps://ferrulex.com/blog/what-are-instrumentation-fittings/https://ferrulex.com/blog/what-are-instrumentation-fittings/What are instrumentation fittings? The definition, the families (compression bodies, instrument valves, manifolds) and why they are 316 stainless.Sun, 27 Sep 2026 00:00:00 GMThttps://ferrulex.com/blog/what-are-tri-clamp-fittings/https://ferrulex.com/blog/what-are-tri-clamp-fittings/Tri-clamp (tri-clover) sanitary fittings explained: why sizes follow tube OD, a full ferrule flange size chart, clamp types and pressure ratings, and gasket rules.Sun, 27 Sep 2026 00:00:00 GMThttps://ferrulex.com/blog/how-push-to-connect-fittings-work/https://ferrulex.com/blog/how-push-to-connect-fittings-work/How push-to-connect fittings grip and seal: collet teeth, O-ring seal, tube OD tolerances, pressure limits, installation steps, and when compression fittings are better.Sat, 26 Sep 2026 00:00:00 GMThttps://ferrulex.com/blog/1-piece-vs-2-piece-vs-3-piece-ball-valve/https://ferrulex.com/blog/1-piece-vs-2-piece-vs-3-piece-ball-valve/1-piece vs 2-piece vs 3-piece stainless ball valves: how body construction affects cost, inline repair, pressure rating and which design to spec for your line.Fri, 25 Sep 2026 00:00:00 GMThttps://ferrulex.com/blog/3-way-ball-valve-l-port-vs-t-port/https://ferrulex.com/blog/3-way-ball-valve-l-port-vs-t-port/How 3-way stainless ball valves work: L-port vs T-port flow paths, mixing vs diverting duty, and how to spec port pattern, size and seals on an RFQ.Fri, 25 Sep 2026 00:00:00 GMThttps://ferrulex.com/blog/ball-valve-ratings-explained/https://ferrulex.com/blog/ball-valve-ratings-explained/What 1000 WOG, 2000 PSI and 3000 PSI stainless ball valve ratings actually mean, how temperature derates them, and how to spec the right pressure class.Fri, 25 Sep 2026 00:00:00 GMThttps://ferrulex.com/blog/bright-annealed-tubing-instrumentation/https://ferrulex.com/blog/bright-annealed-tubing-instrumentation/Bright annealed tubing explained: the hydrogen-atmosphere annealing process, BA surface finish numbers, why instrumentation and high-purity lines specify it.Fri, 25 Sep 2026 00:00:00 GMThttps://ferrulex.com/blog/can-a-needle-valve-regulate-pressure/https://ferrulex.com/blog/can-a-needle-valve-regulate-pressure/Do needle valves reduce pressure? Yes, while flow passes — but a needle valve is not a regulator and cannot hold downstream pressure as flow varies.Fri, 25 Sep 2026 00:00:00 GMThttps://ferrulex.com/blog/compression-fitting-leaks-causes-fixes/https://ferrulex.com/blog/compression-fitting-leaks-causes-fixes/Compression fitting leaks diagnosed: the symptom-to-cause table covering weeps, pull-outs, hot leaks and remade joints, with the correct fix for each.Fri, 25 Sep 2026 00:00:00 GMThttps://ferrulex.com/blog/fob-vs-cif-vs-exw-fittings/https://ferrulex.com/blog/fob-vs-cif-vs-exw-fittings/FOB vs CIF vs EXW for importing fittings: who arranges and pays what, where risk really transfers under Incoterms 2020, and which term fits which buyer.Fri, 25 Sep 2026 00:00:00 GMThttps://ferrulex.com/blog/full-port-vs-reduced-port-ball-valves/https://ferrulex.com/blog/full-port-vs-reduced-port-ball-valves/Full port vs reduced port stainless ball valves: flow coefficient, pressure drop, pigging and when a reduced bore valve is the right cheap choice.Fri, 25 Sep 2026 00:00:00 GMThttps://ferrulex.com/blog/high-pressure-needle-valves-integral-vs-union-bonnet/https://ferrulex.com/blog/high-pressure-needle-valves-integral-vs-union-bonnet/High-pressure needle valves: integral vs union bonnet designs, typical 6000 and 10000 psi classes, packing choices, and which construction to spec on an RFQ.Fri, 25 Sep 2026 00:00:00 GMThttps://ferrulex.com/blog/how-does-a-needle-valve-work/https://ferrulex.com/blog/how-does-a-needle-valve-work/How a stainless steel needle valve works: tapered needle and seat mechanics, non-rotating stems, flow direction, and where needle valves belong on a panel.Fri, 25 Sep 2026 00:00:00 GMThttps://ferrulex.com/blog/how-to-write-rfq-stainless-fittings/https://ferrulex.com/blog/how-to-write-rfq-stainless-fittings/How to write a stainless fittings RFQ that gets a fast factory quote: the line-item checklist, what each missing field costs, and a worked example.Fri, 25 Sep 2026 00:00:00 GMThttps://ferrulex.com/blog/hs-codes-stainless-fittings-valves/https://ferrulex.com/blog/hs-codes-stainless-fittings-valves/HS code stainless steel fittings and valves: the verified heading 7307 and 8481 reference for importers, and why the right code speeds customs clearance.Fri, 25 Sep 2026 00:00:00 GMThttps://ferrulex.com/blog/kf-vacuum-fitting-sizes/https://ferrulex.com/blog/kf-vacuum-fitting-sizes/KF vacuum fittings sizes explained: KF16, KF25, KF40 and KF50 bores, flange dimensions, O-ring and clamp system, materials and when ISO-K takes over.Fri, 25 Sep 2026 00:00:00 GMThttps://ferrulex.com/blog/metric-vs-fractional-tube-sizes/https://ferrulex.com/blog/metric-vs-fractional-tube-sizes/Metric compression fittings vs fractional inch tube sizes: the conversion table, why 6 mm is not 1/4 inch, and how to avoid mixed-system ordering mistakes.Fri, 25 Sep 2026 00:00:00 GMThttps://ferrulex.com/blog/push-to-connect-vs-compression-stainless-tubing/https://ferrulex.com/blog/push-to-connect-vs-compression-stainless-tubing/Push to connect on stainless steel tubing: when a push-in series approves rigid tube, when compression fittings win, and how to choose for OEM panels.Fri, 25 Sep 2026 00:00:00 GMThttps://ferrulex.com/blog/sanitary-stainless-fittings-food-grade/https://ferrulex.com/blog/sanitary-stainless-fittings-food-grade/Sanitary stainless fittings: when food-grade specs like 316L, Ra surface finish and crevice-free design matter — and when industrial fittings pass.Fri, 25 Sep 2026 00:00:00 GMThttps://ferrulex.com/blog/stainless-compression-fittings-on-copper-plastic-tubing/https://ferrulex.com/blog/stainless-compression-fittings-on-copper-plastic-tubing/When stainless steel compression fittings work on copper, nylon, PEX or PTFE tube — ferrule material rules, insert requirements, pressure limits, and the failure modes to avoid.Fri, 25 Sep 2026 00:00:00 GMThttps://ferrulex.com/blog/stainless-steel-hose-lifespan/https://ferrulex.com/blog/stainless-steel-hose-lifespan/What kills stainless steel hose life: flex fatigue, bend radius abuse, chlorides and velocity, plus inspection signals and handling rules that extend it.Fri, 25 Sep 2026 00:00:00 GMThttps://ferrulex.com/blog/stainless-steel-vs-brass-ball-valves/https://ferrulex.com/blog/stainless-steel-vs-brass-ball-valves/Stainless steel ball valve vs brass: dezincification risk, chloride and temperature limits, pressure classes, cost gap — and the honest verdict per duty.Fri, 25 Sep 2026 00:00:00 GMThttps://ferrulex.com/blog/tri-clamp-vs-threaded-vs-flanged/https://ferrulex.com/blog/tri-clamp-vs-threaded-vs-flanged/Tri clamp vs flange vs threaded connections on sanitary lines: teardown speed, hygiene, pressure and cost trade-offs — and where each connection method belongs.Fri, 25 Sep 2026 00:00:00 GMThttps://ferrulex.com/blog/types-of-stainless-check-valves/https://ferrulex.com/blog/types-of-stainless-check-valves/Stainless steel check valve types compared: spring/piston, swing and dual-plate designs, cracking pressure ranges, orientation rules and where each type fails.Fri, 25 Sep 2026 00:00:00 GMThttps://ferrulex.com/blog/why-piping-needs-expansion-joints/https://ferrulex.com/blog/why-piping-needs-expansion-joints/Why piping needs a stainless steel expansion joint: thermal growth numbers, what happens when movement has nowhere to go, loops vs bellows, and anchor rules.Fri, 25 Sep 2026 00:00:00 GMThttps://ferrulex.com/blog/single-ferrule-vs-double-ferrule/https://ferrulex.com/blog/single-ferrule-vs-double-ferrule/Single-ferrule vs double-ferrule compression fittings: how each seals and grips the tube, DIN 2353 bite-type designs, pressure classes, and which to spec for vibration or gas service.Thu, 24 Sep 2026 00:00:00 GMThttps://ferrulex.com/blog/check-valve-vs-ball-valve/https://ferrulex.com/blog/check-valve-vs-ball-valve/Check valve vs ball valve: one-way flow protection versus shutoff. When to use FerruleX stainless check valves with compression or female thread ends.Fri, 18 Sep 2026 00:00:00 GMThttps://ferrulex.com/blog/needle-valve-vs-ball-valve/https://ferrulex.com/blog/needle-valve-vs-ball-valve/Needle valve vs ball valve for stainless instrumentation: shutoff vs metering, compression vs thread ends, and when FerruleX quotes each from the factory.Fri, 18 Sep 2026 00:00:00 GMThttps://ferrulex.com/blog/types-of-stainless-steel-tube-fittings/https://ferrulex.com/blog/types-of-stainless-steel-tube-fittings/Overview of stainless steel tube fitting types — compression, quick-screw, push-to-connect, threaded adapters and weld — and when FerruleX recommends each.Thu, 17 Sep 2026 00:00:00 GMThttps://ferrulex.com/blog/what-is-a-ferrule-fitting/https://ferrulex.com/blog/what-is-a-ferrule-fitting/Ferrule fittings explained: front and back ferrules in stainless steel compression fittings, how the bite seal works, and RFQ notes from FerruleX.Wed, 16 Sep 2026 00:00:00 GMThttps://ferrulex.com/blog/how-to-install-compression-fittings/https://ferrulex.com/blog/how-to-install-compression-fittings/Factory steps to install double-ferrule stainless steel compression fittings: cut, deburr, seat the tube, tighten, and common leak mistakes to avoid.Tue, 15 Sep 2026 00:00:00 GMThttps://ferrulex.com/blog/stainless-fittings-factory-fast-delivery/https://ferrulex.com/blog/stainless-fittings-factory-fast-delivery/How FerruleX factory stocking, RFQ clarity and packing help overseas buyers get stainless steel fittings with shorter lead times.Tue, 15 Sep 2026 00:00:00 GMThttps://ferrulex.com/blog/what-is-a-compression-fitting/https://ferrulex.com/blog/what-is-a-compression-fitting/What a stainless steel compression fitting is, how double-ferrule seals work, and when FerruleX factory buyers should choose compression over weld or thread.Mon, 14 Sep 2026 00:00:00 GMThttps://ferrulex.com/blog/npt-vs-g-bsp-stainless-steel-fittings/https://ferrulex.com/blog/npt-vs-g-bsp-stainless-steel-fittings/How to pick NPT, G/BSP or metric threads for stainless steel compression fittings and valves — factory RFQ checklist from FerruleX.Sat, 12 Sep 2026 00:00:00 GMThttps://ferrulex.com/blog/ss304-vs-ss316-stainless-steel-fittings/https://ferrulex.com/blog/ss304-vs-ss316-stainless-steel-fittings/Factory guide to choosing SS304 or SS316 for compression fittings, ball valves and hose — corrosion, cost and delivery notes from FerruleX.Thu, 10 Sep 2026 00:00:00 GMT