656-0017 | 2-way NO angle union valve, 1/2" 2.1Cv, pneumatic actuator, 3-8psi spring range | Siemens

The normally open 656 angle union valves are pneumatically operated valves designed to control the flow of both water and steam. This normally open valve is 1/2" line size with 2.1Cv. The actuator is a 2" pneumatic with 3-8psi spring range.