300X slow-closing muffler check valve

  1.300X ease closure Muffler check valve Product Overview :

300X slow closing silencer check valve installation requirements. This product is designed for high-rise and super high-rise buildings. It is used to solve the domestic water and fire-fighting water systems of high-rise buildings. It requires large flow, high sensitivity, low flow resistance, and good non-return sealing effect. 、Occasions requiring no water hammer. This product has the advantages of reasonable design and long service life. Our company’s slow-closing silencing check valve is designed for high-rise and super high-rise buildings. It is used to solve the domestic water and fire-fighting water systems of high-rise buildings. It requires large flow, high sensitivity, low flow resistance, and good non-return sealing effect. Where there is no water hammer. And the product has the advantages of reasonable design and long service life.

2.   Working principle of 300 X slow-closing muffler check valve :

When the valve feeds water from the inlet end, the water enters the main valve control room through the micro filter, the needle valve, and the one-way valve, and then drains to the downstream through the ball valve. Because the needle valve opening is smaller than the ball valve opening, that is, the drainage speed of the main valve control room is greater than the water inlet speed, so the pressure in the control room decreases, 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 backflow water enters the main control room through the ball valve. Due to the one-way valve, the backflow water cannot flow out of the main control room, causing the main control room to gradually increase the pressure and slowly close the main valve. . When the pipeline stops supplying water, if the downstream water starts to flow back, a part of the backflow water enters the main control room through the ball valve. Due to the one-way valve, the backflow water cannot flow out of the main control room, causing the main control room to gradually increase the pressure and slowly close the main valve. .

3. Performance characteristics of   300X slow-closing muffler check valve:

◆ Novel and reasonable structure, reasonable use of hydraulic principle control theory
◆ Stable and reliable operation, large flow rate
◆ Fast opening and slow closing of the valve disc, no water hammer impact (adjustable closing time
◆ Good non-return sealing effect, long service life
◆ Easy installation and maintenance

4.   Installation requirements for 300X slow-closing silencing check valve Basic parameters of slow-closing silencing check valve
Nominal pressure: 1.0-1.6Mpa
Nominal diameter: DN 5 0-DN 600
Applicable medium: clean water
Operating temperature: 0-80 degree
method Blue standard: GB/T17241.6GB/9113
Test standard: GB/T13927 AP1598

5.   300 X slow-closing muffler check valve installation points

A. Pay attention to the direction indicated by the arrow on the valve body during installation. In order to facilitate maintenance, a certain space
should be left around the check valve; B. The stop valve of the corresponding diameter should be installed at the position where the water source can be guaranteed to be cut off when the check valve is repaired ;
C. The muffler check valve must be closed slowly Install the filter.
D. The filter must be installed before the slow-closing muffler check valve.
E The installation time should pay attention to the direction of the arrow on the valve body . In order to facilitate maintenance, a certain space should be left around the check valve.
F. The maintenance should be guaranteed. Install a gate valve of the corresponding diameter at the position where the water source is cut off when the valve is returned.

6. valve body materials and parts reference

7. structure drawing: (PN 1.0-2.5MPa):