The apparatus may form part of a container drain plug and incorporate a drain valve (24).

A purge valve (200) includes an aperture (206), a member (240), and an actuator (100).

A purge valve (200) includes an aperture (206), a member (240), and an actuator (100).

A dispensing valve and a drain valve are connected to the freezing chamber.

A manifold main housing (61) contains a purge valve (41) and two three-way solenoids (37, 39) controlling respectively a secondary transfer valve (43) and a pilot nozzle transfer valve (45).

An apparatus, system, and method using a canister purge valve (100) including an electro-active polymer actuator.

A drain valve (24) is mounted to the housing (21) in flow communication with the water collection area (65).

An adjustable bleeder valve (500) controls the flow characteristics of the regulator (10) by affecting movement of the piston (201).

A method and equipment for opening or closing drain valve utilizing hydraulic pressure of water flow are provided.

A solenoid purge valve in which the coil is encapsulated by a plastic cap (1) that is overmolded.

Recovered solder is drained through a drain valve (118) which is suitably thermally activated.

A drain valve (79) is provided to purge accumulated contaminants from basin (70) while the filter (10) operates.

The main device comprises a waste water filter provided with a apparatus for automatically cleaning the filter screen, a drain valve, a check valve and a pump.

The chamber is provided with a drain tap (22) and an access port (24) with a closure cap 25.

The placement of a purge valve allows the anode to be purged with air without re-introducing air into the cathode.