Nominal diameter:
, ~
Nominal pressure:
, .~
Applicable media: water, oil
,
Applicable temperature:
, ~
℃
,
Connection form: flange
,
Material: cast iron, ductile cast iron, cast steel, stainless steel
,
. ,
. ,
,
. ,
Safety pressure relief valves and pressure maintaining valves are generally installed upstream of the water supply pipe network system to achieve control of the downstream pipe network or devices. The pressure reducing and stabilizing function is widely used for water pressure control in high-rise buildings, living areas or other water supply pipe network systems.
. ,
. ,
. ,
Working principle of safety pressure relief and pressure maintaining valve:
. ,
. ,
The safety pressure relief and pressure maintaining valve uses the setting of the pressure regulating pilot valve spring pressure and the adjustment of the needle valve opening to set the outlet pressure, and stabilizes the outlet pressure through the feedback of the takeover system and the control room.
. ,
Safety pressure relief
. ,
The pressure maintaining valve uses a needle type regulating valve and a pilot valve to control the water pressure independently, without the need for additional devices, energy, and maintenance. It is simple, has little influence on inlet pressure and flow, has high pressure control accuracy, and is reliable in pressure reduction and pressure stabilization.
. ,
. ,
When the pipe supplies water from the inlet end, the water flows through the needle valve and enters the main valve control chamber. The outlet pressure acts on the pilot valve through the conduit. When the outlet pressure is higher than the pilot valve set value, the pilot valve closes and the control room stops draining water. At this time, the pressure in the main valve control room increases and the main valve closes, and the outlet pressure no longer increases.
. ,
AX742X-16