Watch out: If the lift/test lever on a temperature/pressure relief valve is blocked from movement that prevents the valve from being tested - a step recommended at least annually by relief valve manufacturers. Watch out: Depending on the relief valve model and design, a blocked relief valve t...
valve rod, the effect that temperature of parts above the upper sealing device and the valve rod is higher than 0 DEG C is guaranteed, the draining board can prevent rainwater and condensate water from dripping into the valve, and the pressure relief hole can guarantee that a valve body ...
The relief valve 83 is set or adjusted to a pressure somewhat below the service pressure in the supply pipe 87; and the control valve 86 is adjusted or set to reduce the pressure in the circulating system to a degree below that at which the valve 83 opens. Hence, when no demand exists...
The present invention discloses a method for extremely low temperatures tops valve, including the valve, the valve cover, ball, valve seats, seat retainer, disc springs, preload nut, anti-rotation seat, dripping plate and the spring Storage ring; the valve seat disposed in the seat retainer ...
Connect the pressure relief hole to a piezometer and install a water discharge capillary in the pipeline. Display the data using the piezometer and regulate the pressure with the pressure regulating valve, ensuring it does not exceed 12 MPa. Before the test, ensure all measuring instruments are ...