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300X slow-closing check valve

Products > Hydraulic control valve > 300X slow-closing check valve

300X slow-closing check valve

300X slow-closing check valve structure features and uses
300X slow-closing check valve consists of main valve, check valve, needle valve, ball valve, micro-filter and pressure gauge to form a hydraulic control take-over system. With automatic hydraulic operation, the main valve can be optimally opened or closed.
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300X slow-closing check valve structure features and uses 

  300X slow-closing check valve consists of main valve, check valve, needle valve, ball valve, micro-filter and pressure gauge to form a hydraulic control take-over system. With automatic hydraulic operation, the main valve can be optimally opened or closed. Prevent the occurrence of water hammer and water hammer to achieve the effect of slow closing and noise reduction. 
  This product utilizes hydraulic self-power control, does not require other devices and energy, is easy to maintain, and is stable and stable. 
  This series of valve products are widely used in high-rise buildings, living areas and other water supply pipe network systems and urban water supply projects. 

Working principle of 300X slow-closing check valve 

  When the valve feeds water from the inlet end, the water enters the main valve control room through the micro-filter, needle valve and check valve, and then drains to the downstream through the ball valve. Since the needle valve opening degree is smaller than the ball valve opening degree, that is, the drainage speed of the main valve control chamber is greater than the water inlet speed, the control chamber pressure is lowered, and the inlet pressure acting on the lower end of the main valve disc opens the main valve to supply water downstream. 
  When the pipeline stops supplying water, if the downstream water starts to flow back, a part of the return water enters the main control room through the ball valve. Due to the check valve function, the return water cannot flow out from the main control room, causing the main control room to gradually increase pressure and slowly close the main valve. .

300X slow closing check valve technical parameters

Nominal pressure (Mpa)

Shell test pressure (MPa)

Seal test pressure (MPa)

Applicable medium

Medium temperature (°C)

1.0

1.5

1.1

water

0-80

1.6

2.4

1.76

2.5

3.75

2.75

300X slow-closing check valve main parts and materials

Part Name

Part material

Valve body bonnet

WCB

Seat valve disc

Copper alloy

Seal O-ring

Nitrile rubber

Valve stem

2Cr13

spring

50CrVA

Needle valve

Copper alloy

Ball valve

Copper alloy

Float valve

Copper alloy

Micro filter

stainless steel

Main shape connection size

DN20253240506580100125150200250300350400450
L150160180200203216241292330356495622698787914978
H1106106106137137145178232286318413502600638677677
H172172172225225270289375420570722769906102510271027