VALVES
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.
Specifications
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 |
|