The Spartan Scientific Series APV-10 is a versatile 2-Way, 2-Position air piloted valve that can be controlled by a 3-Way, 4-Way solenoid valve or hand piloted valve. The Series APV-10 features a reciprocating piston operator which is media separated and controls air, fluids, fluid emulsions, water, or any media compatible with the valve materials. Standard sealing materials include FKM, NBR or PTFE. The bronze valve body is available in 1/2 “ to 2.0” NPT port sizes in various versions. The valve is offered with single acting Normally Open, Normally Closed, remote air pilot, or double acting pilot operation. Operating pressure ranges from 0 to 190 psi with maximum pilot pressures of 80 psi dependent upon function. Soft shifting can be obtained by the use of flow controls on the pilot ports. Typical applications for the APV-10 are media control of solvents, water, water with suspended particles, and coolants.
The Spartan Scientific Series APV-20 is a 2-Way, 2-Position valve specifically designed for the control of steam. The APV-20 uses a specially designed Teflon Chevron® seal which ensures separation of the media and pilot sections. In the single acting Normally Closed version, the Series APV-20 uses a spring extended pneumatic operator connected to a sealing disc which when retracted, unseats from a precision orifice and allows fluid flow. When pilot pressure is removed, the APV-20 seat returns to the orifice and flow stops. Features of the Series APV-20 are the ON-OFF indicator at the top of the pneumatic actuator and it can be used for high temperature liquids compatible with the materials of construction and steam. The bronze body is standard and is available in sizes ranging from 1/2” to 2.0” NPT and can control media up to 220 psi.