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(973) 838-6500
Call us Today
(973) 838-6500
| BI-Lok Tube Fittings | Cryogenic Products | Check Valves | Needle Valves | Quarter Turn Valves | Relief Valves | Regulators | Cryogenic Liquid Cylinder Accessories | Custom Solutions |
1/8” - 2” NPT
0 - 4500 Psig
Description
High flow, zero leak, low pressure drop check valve suitable for most fluid and gas applications. Fully guided poppet with free floating O-ring design is extremely tolerant of particulate contamination. A metal to metal positive stop in both the open and checked position protects O-ring and spring from over-stress fatigue. Zero external leakage is achieved by the utilization of a static O-ring seal with PTFE backup ring. When specified with the proper seal material, these valves are ideally suited to cryogenic system applications.
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Technical Data
| Pipe Size | Brass Psig (bar) | Carbon Steel Psig (bar) | 303 Stainless Steel Psig (bar) | 316 Stainless Steel Psig (bar) |
| 1/8" - 1" | 3000(206) | 3000(206) | 4500(310) | |
| 1-1/4" & 1-1/2" | Non standard, consult factory | |||
| 2" | 1500(103) | |||
Materials of Constructions
| Component | Valve Body Material | |||
| Brass | Carbon | 303 SS | 316 SS | |
| Inlet Cap, Outlet Body, Poppet, Spring Retainer | Brass ASTM B16 | Carbon Steel, ASTM A108, Zinc & Black Plated per ASTM B633 | 303 SS, ASTM A582 | 316 SS, ASTM A479 |
| Dynamic O-Ring1 | Buna-N | VitonTM | ||
| Static O-Ring | ||||
| Backup Ring | Virgin PTFE | |||
| Spring | 302 SS, ASTM A313 | |||
| 1 Lubricated with Krytox™ | ||||
Dimensionsional/Flow Data
| Pipe Size (NPT) | A (inches) | Hex | Cv | Flow at 5.0 Psid (SCFM) |
| 1/8" | 1.7 | 13/16" | 1.7 | 35 |
| 1/4" | 2.25 | 1" | 3 | 60 |
| 3/8" | 2.43 | 1-1/8" | 3.9 | 80 |
| 1/2" | 2.93 | 1-1/2" | 7.4 | 150 |
| 3/4" | 3.37 | 1-3/4" | 11.4 | 280 |
| 1" | 3.99 | 2" | 14.2 | 380 |
| 1-1/4" | 4.5 | 2-3/4" | 26.8 | 700 |
| 1-1/2" | 5.35 | |||
| 2" | 6.1 | 3-1/2" Round1 | 51 | 1200 |
| 1 Machined from 3-1/2” round stock with 2-3/4” wrench flats. | ||||
| Flow Tested in accordance with ISA S75.02 with air. Restrictions in the inlet or outlet piping may reduce flow | ||||
Ordering Information
PROPER COMPONENT SELECTION - When specifying a component, the total system design must be considered to ensure safe and trouble-free performance. Intended component function, materials compatibility, pressure ratings, installation, environment and maintenance are the responsibility of the system designer.
For Instructions on How to Select Your Model, click here.
