the second check valve to seal the vent outlet; and is installed between the discharge port and the second check valve outlet to prevent backflow of the fluid by selectively opening and closing the flow path may be any one of the relief valve is installed to selectively discharged through the...
LFF113FPFlood Protection Shutdown Control Valve with SentryPlus Alert®technology. Used with any reduced pressure zone backflow preventer to prevent flooding from relief valve discharge.Learn More Want to learn more? Need support? We’re here to help. ...
nbackflow preventers having at least one check\nvalve, the relief valve assembly being operable in\nresponse to changes in differential pressure\nacross the check valve and in fluid connection\ndownstream of the check valve for discharging\nliquid therefrom to atmosphere when a backflow\ncon...
Self-operated Pressure pneumatic Control Valve WCB CF8 PN2.5-6.4MPa Self-operated Temperature Regulating electric control Valve $118.80 Min. order: 1 set DN20 100 ANSI JIS Washout resistant fly ash sand slag discharge valve manual ceramic knife type slag discharge slurry valve $36.00 - $36.60 Min...
A backflow prevention assembly is disclosed which provides for detection of backflow conditions. The backflow preventer assembly includes a housing having an inlet, an outlet and a discharge opening.
The backflow preventer assembly includes a housing having an inlet, an outlet and a discharge opening. A pair of independent check valves is... JA Everett 被引量: 0发表: 1995年 Blowout preventer with mechanically operated relief valve A blowout preventer having a mechanical linkage to a valve ...
A testing device for a backflow preventer assembly has a plurality of automated valves. Each automated valve is coupled to a corresponding test valve of the backflow preventer assem
A backflow prevention assembly is disclosed which provides for detection of backflow conditions. The backflow preventer assembly includes a housing having an inlet, an outlet and a discharge opening. A pair of independent check valves is positioned within the housing between the inlet and the outlet...
A double check valve backflow preventer assembly reduced pressure designed to have a relatively small length, volume and / or weight. 此装置确定了平行的,最好是共轴的,入口(112)和出口(128)方向. This means determines the parallel, preferably coaxial, inlet (112) and an outlet (128) direction. ...
The method of testing the backflow preventer assembly (1) comprises testing the downstream shut off valve (22) and the downstream check valve assembly (8) by measuring a first pressure (23) development over time in the downstream zone (20) at the downstream test cock (19). It furthermore ...