2-WAY NORMALLY OPEN
Single-orifice valves in which the orifice is open in the de-energized position; flow can exist between inlet and outlet ports.
General Purpose Valves
Series/Model 15/151
General- Port Size 1/8" NPT
- Pressure 0–400 PSI
- Flow (CV) .020–.130
- Size 2.95" × 1.13"
Series/Model 20/21
General- Port Size 1/8" or 1/4" NPT
- Pressure 0–700 PSI
- Flow (CV) .024–.201
- Size 3.48" × 1.63"
Hazardous Location Valves
Series/Model 20/E21
Hazardous- Port Size 1/8" or 1/4" NPT
- Pressure 0–700 PSI
- Flow (CV) .024–.227
- Size 4.0" × 2.63"
- Watts —
Low Watt Valves
Series/Model 50LW/LW51
Low Watt- Port Size 1/8" NPT
- Pressure 0–300 PSI
- Flow (CV) .020–.150
- Size 2.95" × 1.00"
- Watts 2.5
High Pressure Valves
Series/Model 20/H21
High Pressure- Port Size 1/8" or 1/4" NPT
- Pressure 0–2000 PSI
- Flow (CV) .010
- Size 3.48" × 1.69"