Frequently Asked Questions: Instrumentation Fittings, Valves & Ordering

Crestflo manufactures instrumentation fittings, valves, and flow-control components, with its own CNC, VMC, and EDM machining in-house. It isn't a reseller. For more detail, see the about Crestflo and why Crestflo pages.

Products are Indian in origin, though US or European melt is available on request, and full material traceability comes standard. You'll find country-of-origin detail on the US origin & compliance page at Crestflo.

Crestflo builds for the US market and engineers its products as drop-in replacements for US applications. The standard product comes from India, though US and European-melt options are available on request when a job calls for domestic-melt or TAA-eligible material. There's no US warehouse yet. Houston serves as the US sales contact, and orders still ship to the US, with standard items pulled from ready stock and specials made to order. For the current position, see the US origin & compliance page.

Reach the US sales team at sales@crestflousa.com or +1 346 594 9005 (Houston, TX). Full details are on the contact page, where Crestflo lists the rest of its team information.

Crestflo makes instrumentation tube, compression, and ferrule fittings, face-seal (VCR/VCO) and flare fittings, high-pressure cone-and-thread fittings, every type of instrumentation valve, plus regulators, accessories, and tubing. Take a look at the instrumentation products range.

Crestflo's fittings grip and seal tubing with a two-ferrule set. They're qualified to ASTM F1387 in stainless, high-nickel alloy, and titanium, up to 2" (50 mm) OD. See stainless & alloy tube fittings.

Both are instrumentation valves. A needle valve throttles flow finely with a tapered stem, while a ball valve gives quick quarter-turn on/off through a bored ball. Compare them on Crestflo's needle valve vs ball valve page.

Yes, both imperial and metric sizes are available across the fitting range. See metric tube fittings and imperial-fractional tube fittings.

Compression fittings go up to 2" (50 mm) OD, and high-pressure cone-and-thread fittings are rated to 30,000 PSI, with values set per the applicable standard and open to customization on request. Check out the tube fittings range from Crestflo.

No, the US range covers instrumentation only: tube, compression, ferrule, face-seal, flare and cone-and-thread fittings, valves, regulators, accessories, and tubing. Instrumentation tube fittings aren't pipe fittings. They grip and seal small-bore tube mechanically with a ferrule, not by threading or welding pipe. See the full products range.

NPT, NPTF, BSPT, BSPP, ISO parallel, JIC-37, and SAE-ORB end connections come in imperial or metric, each built to the applicable standard. Browse tube fittings for thread options.

Stainless (304/304L, 316/316L, 904L), duplex and super-austenitic (2205, 2507, 254 SMO, AL-6XN, Alloy 20), nickel alloys (Inconel, Incoloy, Monel, Hastelloy, Nickel 200/201) and titanium Gr2 round out the lineup. Full specs live on the materials hub.

The US range leads with stainless and high-nickel/CRA alloys; brass isn't a headline material here. Crestflo covers the details in its SS & high-nickel alloy options.

Sour service is governed by NACE MR0175 / ISO 15156, which qualifies alloys such as 316/316L, duplex, super duplex, and nickel grades for wet H2S conditions. See NACE MR0175 for sour service.

Crestflo fittings are dimensionally interchangeable with major brands and qualified to ASTM F1387. We use "interchange" and "equivalent" language only, and we're not affiliated with those brands. Swagelok® is a trademark of Swagelok Company. See the Swagelok interchange chart.

ASTM F1387 is the performance-qualification standard for mechanically attached fittings, including compression tube fittings; Crestflo qualifies its interchange to it, a proof most competitors do not publish. See ASTM F1387 explained.

Instead of a static table, we build the equivalents you actually need. Request your Swagelok®, Parker® (A-Lok®/CPI™), Hoke®, Hy-Lok®, Fitok®, or Tylok® cross-reference, and our engineering team returns the matching Crestflo parts. Start on the cross-reference hub, or see the Swagelok alternative overview.

Crestflo holds ISO 9001, ISO 14001, ISO 45001, and PED certification. It qualifies fittings to ASTM F1387 and valves to ASME B16.34, and its products reference NACE MR0175 / ISO 15156. You can find the certificates on the quality page.

Crestflo issues an EN 10204 3.1 mill test certificate as standard practice, and a 3.2 is available if you request it. Every part carries a heat/lot number, too, so you get full traceability. For details, see MTC & heat-number traceability.

Hydraulic proof, burst and impulse, pneumatic, fatigue, vibration, thermal cycling, pull-out and vacuum testing, positive material identification, and 100% seat & shell leak testing on manifolds, with in-house NDT, destructive testing at ISO/IEC 17025-accredited labs, and third-party inspection on request. See the testing & inspection regime.

Yes, oxygen and ultra-high-purity cleaning are available to the applicable cleanliness standard. Just specify your target on the RFQ. See oxygen / UHP cleaning for details from Crestflo.

Crestflo products come with a standard warranty against manufacturing defects. Current terms are set out on the warranty page, or you can request them directly from our engineering team.

Send an RFQ with your name, company, email, phone, and a description of what you need, and Crestflo's engineering team gets back to you with a quote. There's no online cart or live pricing here, Crestflo runs on a request-for-quote model. Start on the request-a-quote page.

Ready stock covers the standard items; specials get made to order. Delivery runs 6–8 weeks, against the 20-plus weeks common at the majors. See the lead-time page for details on how Crestflo handles this.

Small minimum order quantities are available. Exact minimums depend on the part and material, and Crestflo confirms them with your RFQ. Start a quote request.

Yes, sample requests are supported for evaluation. Use the request-a-sample page to set one up with Crestflo.

No, Crestflo works on an RFQ model instead of an online cart or a public price list, so you'll get pricing quoted against your specific requirement. See how to buy.

Yes, kitting and vendor-managed inventory programs are available for distributors and equipment manufacturers. See kitting & VMI.

Yes, private-label and made-to-print programs are available. Take a look at the private-label program and custom / made-to-print manufacturing pages for details on how Crestflo handles each.

Apply through the distributor program; Crestflo also runs master-distributor stocking programs. Start on the become-a-distributor page, or take a look at the master-distributor program.

Yes, Crestflo supports OEM design-in, private label, and made-to-print work for equipment manufacturers. Take a look at the OEM programs page and the equipment-manufacturer design-in page for details.