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Untitled Document
 

 
 
 
Operation

Uni-LOK "RVH1" Series Relief Valves are designed for upsteam pressure overcoms the force exerted by the spring, the poppet opens, allowing flow throuth the valve.
During rellef, flow through the valve increases proportionately as the inlet pressure increases.
Creaking pressure is only sensitive to inlet pressure and is not affected by outlet pressure.
To increase the cracking pressure of the valve, the spring must be compressed by simply turing the adjustment cap clockwise.

General Information

Maximum Working Pressure 6000 psing (422kg/㎠)
Cracking Pressures from 200 psig to 1500 psig(14kg/㎠ to 105kg/㎠) to atmosphere.
Maximum Outlet Pressure 2450 psig (172kg/㎠) should not exceed inlet pressure.
Operating Temperature Range -23℃ to 200℃ (-10°F to 392°F)
Material : 316 Stainless Steel Construction.
 
 
Table of Dimensions.
 
Part No. Oriflce Connection Size Dimension (mm)
in mm Inlet Outlet H B C L
RVH1-04T-04T 0.140 3.6 1/4 OD 1/4 OD 105.0 36.5 40.6 51.5
RVH1-04M-04T 1/4 M NPT 1/4 OD 98.5 30.2 40.6 51.5
RVH1-04M-04F 1/4 M NPT 1/4 M NPT 98.5 30.2 29.7 40.6
RVH1-M06T-M06T 6mm OD 6mm OD 105.0 36.5 40.6 51.5
RVH1-M08T-M08T 8mm OD 8mm OD 105.0 36.5 40.6 51.5
 
Ordering Information
Select the Spring Designator from the chart bellow
that correponds to the desired Cracking Pressure Range.
 
Normal Cracking Roessure Spring Designator Color Code
200 - 300 psig A Blue
350 - 750 psig B Yellow
750 - 1500 psig C Purple
1500 - 2500 psig D Orange
2500 - 3000 psig E Brown
3000 - 4000 psig F White
4000 - 5000 psig G Red
5000 - 6000 psig H Green