High Pressure Relief Valve (HPRV)0 pages
HPRV
HIGH PRESSURE RELIEF VALVE
1/8" - 3/4" NPT
10-2400 Psig
Description
The HPRV Series Relief Valve provides accurate crack pressure with
zero leakage up to 98% of nominal set pressure. When properly
specified, this factory preset, tamper proof design, is ideally suited for
most any liquid or gas application. Encapsulating the o-ring seal within
the poppet eliminates seal extrusion and cold flow characteristics. By
guiding the poppet into the body, a line of contact seal is ensured and at
high crack pressure settings, the o-ring is protected by a metal-to-metal
stop between the poppet and the body. High flow design, combined
with narrow band interchangeable springs, minimizes system pressure
rise as flow demand increases. Available in brass or stainless steel and
inline or discharge to atmosphere. Valves can be supplied with a
manual pull ring override.
Features
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100% Factory Preset and Tested
Zero Leakage to 95-98% of Set Pressure
Tamper Proof Adjustment
Excellent Reseal Performance
Inline
Technical Data
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SERIES
HPRV
Set Pressure Range: 10 to 2400 Psig (0.7 to 166 Bar)
Set Pressure Tolerance: Factory Preset +/-5% on increasing
pressure
Reseal: Elastomer Seals 90%-95% of Actual Crack Pressure.
PTFE may be slightly lower
Inline Valves (Series HPRV):
Proof Pressure: 3700 Psig (225 Bar)
Burst Pressure: >5000 Psig (345 Bar)
Temperature Range: -320º F to 400º F (-220º C to 205º C)
Based on seal selection, see ordering information
Materials of Construction
HPRVA
Vent to Atmosphere
Valve Body Material
Component
Inlet Body,
Outlet Cap,
Spring
Chamber,
Spring
Retainer,O'Ring
Spreader
Brass
303 Stainless
Steel
Brass, ASTM B16
303 SS, ASTM
A582*
Poppet
316 Stainless
Steel
316 SS, ASTM
A479*
303 SS, ASTM A582
Spring
302 SS / 17-7 PH ASTM A313
Locking Screw
18-8 SS
Seals*
As Specified, See Ordering Information
Pull Stud
Brass, ASTM B16
Pull Ring
303 SS, ASTM
A582
Plated Steel
*Lubricated with Krytox ™
SA.SL.HPRV001.E.1903
316 SS, ASTM
A479
HPRVM
Vent to Atmosphere
(Manual Override)