RV-1

Moderate-capacity relief protection for instruments and regulators

The Welker RV-1 Relief Valve is designed to protect instruments and regulators from overpressurization in moderate-capacity applications. Built for the 0–200 psig range, the RV-1 provides dependable relief protection with stainless steel construction and an optional threaded port for discharge piping in hazardous gas applications. Compact, corrosion-resistant, and easy to integrate, the RV-1 supports instrumentation, pressure regulation, sampling, and conditioning systems that require safe and reliable overpressure defense.

Where to Use

Instrument and Regulator Protection

Moderate-capacity overpressure protection for instruments, regulators, and downstream equipment.

Hazardous Gas Applications

Optional discharge piping connection supports venting gases to a safe area.

Resources

RV-1 IOM

0–200 psig Spring Range

Designed for moderate-capacity pressure relief applications.

Stainless Steel Construction

Provides corrosion resistance and improved longevity.

Optional Threaded Port for Discharge Piping

Supports hazardous gas applications that require venting to a safe location.

	RV-1
Materials of Construction	316/316L Stainless Steel, Ceramic, FFKM, FKM
Materials of Construction	(Others Available)
Maximum Allowable Inlet Pressure	2500 psig (172.3 barg)
	5000 psig (344.7 barg) (Standard)
	6000 psig (413.6 barg)
Temperature Range	-20 °F to 120 °F (-28.8 °C to 48.8 °C)
Temperature Range	Temperature Range Might Vary Based on Seal Material Selection
Spring Range Options	Up to 200 psig (0–13.7 barg)
Flow Rates	C_v = .89
Flow Rates	Full Flow Accomplished at 150% Over Set Pressure
Connections	Inlet: ¼" MNPT (Standard) or ⅛" MNPT
Connections	Outlet: Atmospheric, ¼" FNPT, or ½" FNPT
Approximate Dimensions	3 ³⁄₁₆" x 1" x 1" (L x W x H)
Approximate Weight	½ lb
Maintenance Schedule	Every 12 Months
Maintenance Schedule	Severe Service, Dirty Conditions, Excessive Usage: More Frequently
Options	Pre-Set Relief
	Sulfinert^®-Treated Wetted Parts
	CE Compliance
	CRN Certification
	NACE Compliance

RV-1

Where to Use

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