VRVI
Inline Relief (Male x Female). A compact, highly accurate, direct acting pressure relief valve. Factory preset to desired crack pressure and/or flow specifications. Internal adjustment provides tamper proof safety against inadvertent pressure changes. Available vent to atmosphere or inline configurations in brass, aluminum and 316 stainless steel. Valves feature a Quad ring seal which provides for extreme accuracy and repeatability with a narrow reseat band. Optional deflector cap increases flow capacity and provides for deflection of discharge.
- Body material
- Brass · Aluminum · 316 SS
- Size
- 1/8" – 3/4"
- Set pressure
- 0.5–150 Psig
- Seals
- 7
Features
- Accurate and Repeatable Cracking Pressure
- 100% Factory Preset and Tested
- Zero Leakage to 95-98% of Set Pressure
- Tamper Proof Adjustment
- Excellent Reseat Performance
- Compact Size
Materials
| Body material | Brass · Aluminum · 316 SS |
|---|---|
| Size | 1/8" – 3/4" |
| Set pressure | 0.5–150 Psig |
| Seals | 7 |
| Set Pressure Range | 0.5 to 150 Psig (0.03 to 10.34 bar) |
| Inline Valves (Series VRVI) | details Proof Pressure: 400 Psig (28 bar) Burst Pressure: >500 Psig (34 bar) |
| Set Pressure Tolerance | Factory preset details < 2 Psig (0.14 bar): +/-10% 2 to 150 Psig (0.14 to 10.3 bar): +/- 5% (on increasing pressure) |
| Reseat | details 50% of Set Pressure for valves specified 0.5 -1.9 Psig (0.03 to 0.13 bar) 80% of Set Pressure for valves specified 2-10 Psig (0.14 to 0.7 bar) 92% of Set Pressure for valves specified 10-150 Psig (0.7 to 10.3 bar) Temperature Range: -320º to 400º F (-195º C to 205º C) (based on sealing selection, see ordering information) |
| 1/8” | VRV & VRVD · A .97 · VRV & VRVD · B .69 · VRV & VRVD · C 1.10 · VRV & VRVD · Hex 1/2" · VRVI · A Not Available |
| 1/4" | VRV & VRVD · A 1.20 · VRV & VRVD · B .92 · VRV & VRVD · C 1.32 · VRV & VRVD · Hex 5/8” · VRVI · A 1.62 · VRVI · Hex 3/4" |
| 3/8” | VRV & VRVD · A 1.24 · VRV & VRVD · B 1.17 · VRV & VRVD · C 1.38 · VRV & VRVD · Hex 3/4" · VRVI · A 2.12 · VRVI · Hex 7/8” |
| 1/2" | VRV & VRVD · A 1.75 · VRV & VRVD · B 1.40 · VRV & VRVD · C 1.92 · VRV & VRVD · Hex 1” · VRVI · A 2.20 · VRVI · Hex 1” |
| 3/4" | VRV & VRVD · A 2.25 · VRV & VRVD · B 1.73 · VRV & VRVD · C 2.44 · VRV & VRVD · Hex 1-1/8” · VRVI · A 2.72 · VRVI · Hex 1-1/4” |
| 1” | VRV & VRVD · A 3.12 · VRV & VRVD · B 1.94 · VRV & VRVD · C 3.29 · VRV & VRVD · Hex 1-1/2” · VRVI · A Not Available |
| Valve Body | Valve Body Material · Brass Brass, ASTM B16 (Nickel Plated, ASTM B689) · Valve Body Material · Aluminum1 2024 Aluminum ASTM B211 (Clear Anodized, ASTM B580) · Valve Body Material · Stainless Steel 316 SS, ASTM A479 |
| Stem | Valve Body Material · Brass Brass, ASTM B16 · Valve Body Material · Aluminum1 ↑ · Valve Body Material · Stainless Steel ↑ |
| Spring Retainer2 | Valve Body Material · Brass ↑ · Valve Body Material · Aluminum1 ↑ · Valve Body Material · Stainless Steel ↑ |
| Seal3 | Valve Body Material · Brass As specified, see ordering information · Valve Body Material · Aluminum1 ↑ · Valve Body Material · Stainless Steel ↑ |
| Spring | Valve Body Material · Brass 302 SS/17-7 PH, ASTM A313 · Valve Body Material · Aluminum1 ↑ · Valve Body Material · Stainless Steel ↑ |
| Locknut | Valve Body Material · Brass 18-8 SS · Valve Body Material · Aluminum1 ↑ · Valve Body Material · Stainless Steel ↑ |
| Deflector Cap and Rivet | Valve Body Material · Brass 2024 Aluminum ASTM B211 (Clear Anodized, ASTM B580) · Valve Body Material · Aluminum1 ↑ · Valve Body Material · Stainless Steel ↑ |
- 1 Available in 1/8” and 1/4" valves only
- 2 All 1/8” and 1/4" valves have 316 stainless steel (ASTM A479) retainers
- 3 Lubricated with KrytoxTM
Applications & Documents
Configure your order
Select the variables exactly as they appear in the manufacturer datasheet. The full part number is assembled automatically.
Port Size
single select · 5 valuesNPT threads per ANSI/ASME B1.20.1
Material Code
single select · 3 valuesFor other materials, consult factory
Seal Material
single select · 7 valuesNominal Set Pressure
free value · 0.5–150 PsigSpecify .5 – 150 Psig (TeflonTM Seals not available below 20 Psig)
Select variables
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