Advanced Specialty Gas Equipment

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RV5572 Series Relief ValveVALVES
RV5570, RV5580 Series
Relief Valves

Relief valves are commonly used downstream of pressure regulators to protect the regulator,delivery pressure gauge and downstream system from damage due to overpressurization caused by a regulator failure. They may be used with hazardous gases because they have 1/4" NPT outlets which permits vented gas to be piped to a safe disposal system.

RV5580 Series Relief ValveSpecifications
Adjustable Range/Set Pressure:

 Reseat Pressure: 70% of set pressure

Flow Coefficient:

Inlet Connection:1/4" NPT male

Outlet Connection:
  RV5570:1/4" NPT male
  RV5580: 1/4" NPT female

Approximate Weight:
  RV5570: 2 oz
  RV5580: 8 oz

Materials of Construction
Body:
Seals:
  RV5570: PTFE coated on Viton®
  RV5580: Viton®

Table I, Non-Field Adjustable Relief Valves

Part No. Set Pressure
(psig)		 Body
Material
 Flow
Coefficient (Cv)
RV5572-50 50 Brass 0.37
RV5572-100 100 Brass 0.37
RV5572-250 250 Brass 0.37
RV5572-500 500 Brass 0.37
RV5572-800 800 Brass 0.37
       
RV5573-50 50 Chrome-Plated Brass 0.37
RV5573-100 100 Chrome-Plated Brass 0.37
RV5573-250 250 Chrome-Plated Brass 0.37
RV5573-500 500 Chrome-Plated Brass 0.37
RV5573-800 800 Chrome-Plated Brass 0.37
       
RV5574-50 50 Type 316 Stn. Stl. 0.37
RV5574-100 100 Type 316 Stn. Stl. 0.37
RV5574-250 250 Type 316 Stn. Stl. 0.37
RV5574-500 500 Type 316 Stn. Stl. 0.37
RV5574-800 800 Type 316 Stn. Stl. 0.37

Table II, Field Adjustable Relief Valves

Part No. Adjustable
Range
(psig)		 Body
Material
 Flow
Coefficient (Cv)
RV5580-225 10–225 Type 316 Stn. Stl. 0.60
RV5580-350 50–350 Type 316 Stn. Stl. 0.41
RV5580-750 350–750 Type 316 Stn. Stl. 0.41
RV5580-1500 750–1500 Type 316 Stn. Stl. 0.41
RV5580-2250 1500–2250 Type 316 Stn. Stl. 0.41
RV5580-3000 2250–3000 Type 316 Stn. Stl. 0.41
RV5580-4000 3000–4000 Type 316 Stn. Stl. 0.41
RV5580-5000 4000–5000 Type 316 Stn. Stl. 0.41
RV5580-6000 5000–6000 Type 316 Stn. Stl. 0.41