CAD & 3D Models for Instrumentation Fittings, Valves, Regulators & Tubing

CAD and 3D models let you drop a Crestflo instrumentation fitting or valve straight into your SolidWorks, Inventor, Creo or AutoCAD assembly, skid layout or analytical panel. You design the part in before you ever procure it. Crestflo doesn't hand these models out through a public download library. Instead, tell our engineering team the part, size and format you need, and we send back the 3D solid or 2D dimensional drawing that matches. That approach keeps proprietary geometry in the hands of qualified buyers, but you still get accurate envelopes for clash, fit and routing checks. Request your CAD models with the part or configuration you're designing around.

These CAD files cover instrumentation tube fittings and valves: stainless-steel and high-nickel/CRA compression, face-seal and weld fittings built for fluid-system and analytical assemblies. They aren't plumbing or PEX pipe-fitting CAD blocks. Nor are they carburetor needle valves or electrical wire ferrules.

Also Known As: CAD Files, 3D Models, STEP Files & Sales Drawings

Engineers ask for these design-in assets under a lot of different names. Common terms include CAD files and CAD downloads, 3D CAD, native and neutral CAD files, CAD drawings, model library assets, sales drawings, dimensional drawings, technical drawings, engineering drawings and product drawings. By file type, people request STEP files (.stp /.step), IGES files (.igs), Parasolid (.x_t), ACIS (.sat), JT, SolidWorks parts (.sldprt), Inventor parts (.ipt), Creo parts (.prt), CATIA (.CATPart), Solid Edge, eDrawings, 3D PDF, and 2D DXF/DWG blocks. Whatever the label, it's the same underlying geometry: Crestflo instrumentation parts, described in whatever format your CAD system needs to build the assembly.

Instrumentation CAD Model Library: Product Families Covered

CAD and 2D drawings for the instrumentation range are available on request. Browse the product hub for specs, sizes and end connections, then request the model you need for the exact part.

Fittings handle end connections up to 2″ (50 mm) OD. That covers the common tube sizes: 1/8″, 1/4″, 3/8″, 1/2″, 3/4″ and 1″, plus metric sizes from 3 to 25 mm (6 mm, 8 mm, 10 mm, 12 mm). Instrumentation valves, meanwhile, span 1/16″ to 1″.

Models come in both imperial and metric geometry. Just specify which units your assembly uses when you place the request.

Available CAD File Formats: STEP, IGES, Parasolid, DXF & DWG

Ask for the format your CAD system opens natively. The table below shows which format works best for each use.

Values follow the applicable exchange standard, and we can adjust them to your requirement. If your platform needs a format we haven't listed, ACIS (.sat), JT, CATIA (.CATPart), Solid Edge or eDrawings, just ask. We'll translate from the neutral STEP or IGES solid, which opens anywhere. BIM/Revit (.rfa) families for plant and digital-twin coordination aren't part of the standard instrumentation CAD set. Tell us if you need one, and we'll advise.

Neutral vs Native vs 2D: Which CAD to Request

For most design-in work, a neutral STEP solid drops cleanly into the assembly for clash and fit checks. Add a 2D PDF drawing when you need the governing dimensions on paper.

Material doesn't change the geometry. The same model represents the part whether it ships in 316, 316L, 904L, Duplex 2205, 254 SMO, Inconel, Monel, Hastelloy C-276, or Titanium Gr2. Pick the alloy at RFQ, not in the CAD. For grade selection, check Crestflo's materials guide.

Standards, Traceability & the Parts Behind the Models

Crestflo builds each part to the standard approvals that fit its type, since a model means nothing if the part behind it isn't qualified. Compression tube fittings are performance-qualified to ASTM F1387; that's the qualification that makes them dimensional drop-in equivalents. Instrumentation valves are different: they meet ASME B16.34 along with the applicable API 598 / 602 / 6D valve standards, and F1387, being a compression-fitting standard, doesn't apply to valves. Crestflo holds ISO 9001 / 14001 / 45001 & PED certification, and every part ships with a heat/lot number plus an EN 10204 3.1 material test certificate (3.2 available on request), giving full traceability. The standards themselves, ASTM F1387, ASME B16.34 and EN 10204 MTC, are all covered in the standards library.

Authority note: the models give you representative geometry for design-in work, clash checks, and fit checks. Nothing more. The official product drawing and specification govern all dimensions, so don't scale a CAD model to get manufacturing tolerances.

Request CAD, Configure a Part or Find a Drop-In Equivalent

• Request the model. Send us the part, size, end connection and format, and our engineering team returns the CAD, request your files or talk to us.
• Build the exact code first. Use the part-number configurator to define the configuration. Then request that part's CAD.
• Replacing another brand? Request your cross-reference. Give us the Swagelok®, Parker®, Hoke®, Hy-Lok® or Fitok® part number, and we'll return the Crestflo interchange along with its geometry. The dimensional envelope is qualified per ASTM F1387, so it drops right into your existing model. Start at the cross-reference tool.
• Geometry not standard? Send us your print. Crestflo builds made-to-print and custom parts straight from your drawing.
• Not sure of the alloy? Try the alloy selector first, and narrow down the grade before you request the CAD.

Swagelok®, Parker®, Hoke®, Hy-Lok® and Fitok® are trademarks of their respective owners. Crestflo has no affiliation with them, and none of these companies has authorized or endorsed Crestflo's products. What Crestflo offers are equivalents built for dimensional interchange, qualified per ASTM F1387 (F1387).

Why Design in Crestflo

Crestflo is the instrumentation arm of a Government-of-India-recognized export house with four decades behind it and a proven record delivering into the Middle East. These are engineering-grade parts backed by an actual manufacturer, not a catalog reseller.

• Fast to procure: ready stock on standard items, made-to-order for specials, and delivery in 6–8 weeks. That's well inside the 20+ weeks typical of the majors.
• Drop-in interchange: compression fittings qualified to ASTM F1387 replace the incumbent brand in your existing assembly. No re-modeling the envelope required.
• Imperial and metric geometry on every fitting, with single and double ferrules to requirement.
• Small MOQ and private-label programs for OEMs and distributors.
• Full traceability: heat-number marking plus EN 10204 MTC 3.1 (3.2 on request).
• In-house CNC, VMC and EDM machining for custom and made-to-print work.
• Honest origin: Origin is India, though US or European melt is available on request, with full material traceability. See US-origin compliance for details from Crestflo.

Contact the US sales team at sales@crestflousa.com or +1 346 594 9005 (Houston, TX). Design the part in, then move straight to a quote. We Engineer Confidence.

Frequently Asked Questions

Related Tools & Resources

• Instrumentation tools hub
• Cross-reference / interchange lookup
• Part-number configurator
• Alloy selector
• Tube fitting size chart
• Materials guide
• Catalog & literature
• Request a sample

Reviewed by the Crestflo Engineering Team