High Pressure Valves

DEMA’s high pressure valves are designed for pressures from 10 psi up to 1200 psi, are available for 3/8-1” pipes, have orifices from 11/32-15/16” and are intended for use with water only. They operate the same as a pilot operated valve except the pilot port is in a separate chamber from the piston. This allows the plunger to operate closer to the top plug with more force and consequently higher opening pressure.

     
 

453P/S
454P
458P/S

Model No.
Pressure Differential
Body Material
Pipe Size N.P.T.
CV Flow Factor #
GPM @ 60 psi (cv # x √ psi)
min/psi
max/psi
453P*
10
1200
Brass
3/8
1.8
13.95
453S**
10
1200
Brass
3/8
1.80
13.94
454P*
10
1200
Brass
1/2
3.70
28.66
458P*
10
1200
Brass
1″
11.10
85.98
458PS**
10
1200
Brass
1″
11.10
85.98

* – Stainless Steel Piston

** – Stainless Steel Piston and Stainless Steel Sleeve