3/4"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...
1/2" npt two way pneumatic terminal unit valve, 1.6cv, 2-5psi spring range, proportional normally open valve action, push on air connections for 1/4" o.d. plastic tubing, for use with water...