DEMA’s pilot-piston valves are available for 3/8-1” pipes, have multiple orifice sizes from 9/32 to 3/4”, have brass bodies, stainless steel seats and Teflon seals. With pilot-piston valves, the stem and plunger assembly opens the port. This releases the pressure on top of the piston, which moves upward and opens the main valve port.
| Model No. | Pressure Differential | Body Material | Pipe Size N.P.T | CV Flow Factor # | GPM @ 60 psi (cv # x √ psi) | |
|---|---|---|---|---|---|---|
| min/psi | max/psi | |||||
| 412P | 1 | 150 | Brass | 3/8″ | 1.2 | 9.30 |
| A413P | 3 | 150 | Brass | 3/8″ | 2 | 15.50 |
| A414P | 3 | 150 | Brass | 1/2″ | 3.10 | 24.03 |
| A416P | 3 | 150 | Brass | 3/4″ | 5 | 38.75 |
| A418P | 3 | 150 | Brass | 1″ | 8 | 62 |
* Shown above are the most common configurations. Many additional configurations are readily available, contact us at [email protected] or speak with your DEMA sales representative for more information.
Coil Options