Instrumentation Process Control - AR Thomson Group
Instrumentation Process Control - AR Thomson Group
Instrumentation Process Control - AR Thomson Group
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
Valves<br />
Pressure Regulators<br />
Relief Valves<br />
Valve<br />
<strong>Group</strong>s<br />
Relief<br />
Valves<br />
Model<br />
Series<br />
RL<br />
RH<br />
MPRA<br />
Maximum<br />
Operating<br />
Pressure<br />
400 psi<br />
28 bar<br />
6000 psi<br />
414 bar<br />
20999 psi<br />
1448 bar<br />
Temperature Cv<br />
RL4 Series (Catalog 4131-RL)<br />
Handle for fi eld maintenance<br />
Externally adjustable pressure<br />
settings while valve is in operation<br />
Seven different springs<br />
RH4 Series (Catalog 4131-RH)<br />
Eight springs<br />
Manual override option with positive<br />
stem retraction is available for<br />
pressures up to 1500 psi (103 bar)<br />
Quick Couplings<br />
Body<br />
Material Seal Material End Connections<br />
Buna-N Rubber<br />
Ethylene<br />
Propylene Rubber<br />
Highly Fluorinated<br />
Fluorocarbon<br />
Fluorocarbon<br />
Rubber<br />
Steel<br />
Stainless<br />
Min Max Max<br />
-70 F<br />
-57C<br />
400 F<br />
204 C<br />
0.8 x x x x x x<br />
-70 F<br />
-57C<br />
400 F<br />
204 C<br />
0.4 x x x x x x<br />
-10 F<br />
-23C<br />
400 F<br />
204 C<br />
0.7 x x x x x<br />
Manual override option with positive<br />
stem retraction is available for the<br />
full working pressure range<br />
Color coded springs and labels<br />
indicate spring cracking range<br />
Preset from factory and comes with<br />
standard springs<br />
Neoprene Rubber<br />
Min Max<br />
1/4 in 1/4 in<br />
6mm 8mm<br />
1/4 in 1/4 in<br />
6mm 8mm<br />
1/2 in 9/16 in<br />
n/a n/a<br />
Pipe Fittings<br />
Catalog<br />
4131-RL<br />
4131-RH<br />
4234<br />
11