1/2"npt pneumatic radiator valve, straight male union connection, 3cv, 3-10psi spring range, push on air connections for 1/4" o.d. plastic tubing, proportional normally open valve action, for use with steam or hot water systems, includes 2-5psi spring in box

1/2"npt pneumatic radiator valve, angl male union connection, 3cv, 3-10psi spring range, push on air connections for 1/4" o.d. plastic tubing, proportional normally open valve action, for use with steam or hot water systems, includes 2-5psi spring in box

5/8"o.d. 1/2" nominal three way high pressure water valve, 1.6cv, 3-10psi spring range, push on air connections for 1/4" od plastic tubing, proportional normally open ports b to ab valve action, for use with hot or cold water, brass body, brass seats and plug, buna packing, stainless steel stem

5/8"o.d. 1/2" nominal three way high pressure water valve, 2.5cv, 3-10psi spring range, push on air connections for 1/4" od plastic tubing, proportional normally open ports b to ab valve action, for use with hot or cold water, brass body, brass seats and plug, buna packing, stainless steel stem

5/8"o.d. 1/2" nominal three way high pressure water valve, 1.6cv, 2-5psi spring range, push on air connections for 1/4" od plastic tubing, proportional normally open ports b to ab valve action, for use with hot or cold water, brass body, brass seats and plug, buna packing, stainless steel stem