Relief valve

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Size: DN20-DN800

Nominal Pressure: PN10/PN16/PN25

Operation Temperature: ≤80°C

Suitable Medium: Water


500 x relief valve by the main valve, pressure relief/holding pressure pilot valve, needle valve, ball valve, micro shape filter and pressure gauge of hydraulic control of system. Use of hydraulic automatic operation, can make the pressure release valve and can be used for holding pressure valve. As a pressure relief valve, it can maintain water supply way pressure under the TVC of set; For holding pressure valve, can maintain the main valve upstream water pressure above the set value, maintain the main valve upstream water supply pressure.

500 x relief valve using hydraulic control themselves, do not need other devices and energy, maintenance is simple, one valve is multi-purpose. 500 x relief valve is widely used in water supply network system of high-rise buildings, residential and urban water supply engineering.

1, A pressure relief valve: when the pressure relief/holding pressure pilot valve is adjusted for pressure condition, water through the needle valve, the main valve control room, ball valve, A pressure relief/holding pressure pilot valve, ball valve B of exports, at this time the main valve is fully open. When the inlet pressure exceeds the pressure relief/holding pressure pilot valve set TVC, pressure pilot valve will automatically open, channelled through ball valve C section water, make the line pressure. When the pressure recovery to TVC, pressure relief valve automatically shut down. As a pressure relief valve, ball valve normally open.

2, for holding pressure valve: when the pressure relief/holding pressure pilot valve adjustment of the state, as long as the main valve import water pressure is lower than the pilot valve set point, pilot valve is closed. The main control room booster, the main valve closed.

3, when the main valve upstream water supply pressure exceeds pilot valve set pressure, holding pressure pilot valve to open, the control room of water through the ball valve to the export, the control room main reducing valve open, began to water supply, that maintain the upstream water pressure. For holding pressure valve, ball valve normally closed C or substituted a plug.

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Q:Signal butterfly valve installation or other valve installation
The installation of the signal valve is in accordance with GB50261-2005The 5.4.6 signal valve shall be installed on the pipe in front of the flow indicator, and shall not be less than 300mm from the flow indicator.The other valve control valve installation, specification, type and location of installation shall comply with the design requirements, the installation direction should be correct, control valve should be clean, no blockage, no leakage; the main control valve should be added headstock logo, the control valve cover shall be provided to indicate position of the mark in the position.1. The installation of the exhaust valve shall be carried out after the pressure test and the flushing of the system pipe. The exhaust valve shall be installed at the top of the water distribution dry pipe and the end of the distribution pipe, and no leakage shall be ensured.2, the valve flow direction should be consistent with the direction of flow in the water supply pipe, water inlet side of the filter is installed, and should be installed in the control valve; the adjustable valve should be installed horizontally, the valve cover should be upward; the proportional valve should be installed vertically: when the level of installation, the valve orifice hole single breath we should double down, breathing valve whose orifice should be in a horizontal position.3 other control valve should be installed to keep a certain distance, to facilitate maintenance and management, installation of multifunctional pump control valve itself with pressure gauge, pressure gauge should be installed in the adjacent parts; import should be prevented in the back before the installation or use of the filter with filter backflow preventer, backflow preventer at both ends the valve should be installed separately, and at least one end of the flexible joint should be installed;
Q:Ask about the valve of home improvement
All inlet pipes should be fitted with valves, so if the faucet breaks, you'll know the benefits
Q:Can the gas valves be switched off regularly?
Can often switch, for example, after cooking, you can turn off the valve after cooking.
Q:Dalian hi Max Valve Co., Ltd.
I have to do the technical sales colleagues is high inside out now before the inside sales revenue is also good about one hundred thousand a year as sales of a great degree of luck the.I do not know what the specific circumstances, what age, in this line for several years, there is the opportunity to communicate with the landlord and make progress together.
Q:Is the filter also valve?
The filter is in fact a low inlet and outlet shut-off valve with no disc and valve head. The filter screen is arranged in the middle, to control the filter according to the number of travel impurities. Usually follow the valve to tender, but not valves.
Q:Where is the hydrant main valve?
There is a gate valve at the elbow below the hydrant
Q:Which brand of electric valve is good?
SIEMENS (Siemens, Germany); the main HVAC control valve; Johnson (Johnson, America); electric valve; Honeywell (Honeywell, USA); electric control valve for building; Wu mountain (YAMATAKE, Japan); valve; Bo Li Mou (Belimo, Switzerland); Danfoss (Danfoss ball valve, butterfly valve, Denmark); butterfly valve, gate valve, globe valve (aka ARCA, Germany); the control valve iResearch (ARI, Germany); the pressure relief valve, safety valve; Hank (HANK, Germany); pneumatic valve; KITZ (Japan); gate valve, globe valve, butterfly valve, ball valve, check valve; contact SIEMENS, Johnson, Honeywell, Shanwu, aka more;
Q:What is called protective valve, and other valves what is the difference?
Protection valve should be in the air defense valve, can be copper gate valve. (according to the specific use of civil air defense requirements, design institute does not count).2, while the protection valve should be a locking device with the valve, not the general valve can be replaced.
Q:What is the difference between a stop valve (a power station valve) and other valves?
The cut-off valve is low in and out of the structure, usually used in the case of pressure loss, the cut-off valve is not through the form. Gate valve is straight through type.
Q:What does the 4 point valve mean?
Commonly used valves, pipes in the 4 points, 6 points, an inch, is the earliest use of the length of the British unit, metric units are 15, 20, 25 mm, and now people are also used to call 4 points, 6 points, an inch.1 inches =25.4 mm1 feet =12 inches1 inches =8 cents

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