Noise check valve

Noise check valve

Product model: H41X

Nominal pressure: PN1.0~1.6MPa

Nominal pass through: DN40~600mm

Applicable medium: water and weak corrosive fluid

Applicable temperature: 0~80℃

Flange standard: GB/T 17241.6, GB/T 9113

Test standard: GB/T 13927, API 598


Product overview

The energy-saving muffler check valve is suitable for water supply and drainage pipelines. The valve disc is guided by the central axis at both ends of the inlet. It can be opened and closed flexibly and can be installed horizontally or vertically. The valve disc is spring loaded, its quick closing can effectively eliminate water hammer, the sealing performance is good, and the closing is silent. It has the advantages of small size, light weight, low fluid resistance, fatigue resistance and long life.


Structural features

1. The inner cavity of the valve body adopts a streamlined design, and the flow rate is designed according to the standard to reduce sharp bends, corners, and sharp protrusions, thereby reducing the resistance of the fluid.

2. The front and rear of the valve disc are designed to be tapered, which greatly reduces the fluid resistance and reduces the noise caused by turbulent flow.

3. The closing stroke of the valve disc is short, only 1/4 of the nominal diameter, which reduces the closing time of the valve disc and reduces the generation of water hammer.

4. The valve uses a spring to accelerate the closing speed of the valve disc and reduce the generation of water hammer.

5. The valve disc is a hollow thin shell structure, which reduces the inertia of the valve disc, which not only enables the valve disc to start quickly when it is closed, but also reduces the impact noise when it is closed.

6. This product can be installed vertically, horizontally, obliquely and at any angle.

7. This product has compact structure, few parts, small volume, light weight and beautiful appearance.

8. The inner and outer surfaces are sprayed with environmental protection coating to ensure the anti-corrosion and safety of the product.


Main performance specifications

Model Nominal pressure Shell test pressure Seal test pressure Applicable media Operating temperature
H41X一10 1.0MPa 1.5 MPa 1.1 MPa Water and weak corrosive fluids 0~80℃
H41X一16 1.6 MPa 2.4 MPa 1.76 MPa Water and weak corrosive fluids 0~80℃


Main part material

Model Body Seal Spring
H41X-10 Cast iron or stainless steel Nitrile rubber (NBR) Stainless steel wire 1Cr18Ni9Ti
H41X-16 Cast steel or stainless steel Nitrile rubber (NBR) Stainless steel wire 1Cr18Ni9Ti



image.png


Main external connection dimensions

Nominal pressure Nominal diameter Size(mm)
L D K b Z-Φd
1.0 40 112 145 110 18 4-18
50 120 160 125 20 4-18
65 130 180 145 20 4-18
80 150 195 160 22 8-18
100 165 215 80 24 8-18
125 190 245 210 26 8-18
150 210 280 240 26 8-22
200 255 335 295 28 8-22
250 310 390 350 28 12-22
300 320 440 400 28 12-22
350 380 500 460 30 16-22
400 405 565 515 32 16-26
450 430 615 565 32 20-26
500 450 670 620 34 20-26
600 510 780 725 36 20-30
1.6 40 112 145 110 18 4-18
50 120 160 125 20 4-18
65 130 180 145 20 4-18
80 150 195 160 22 8-18
100 165 215 180 24 8-18
125 190 245 210 26 8-18
150 210 280 240 26 8-22
200 255 335 295 30 12-22
250 310 405 355 32 12-26
300 320 460 410 32 12-26
350 380 520 470 36 16-26
400 405 580 525 38 16-30
450 430 640 585 40 20-30
500 450 715 650 42 20-33
600 510 840 770 48 20-36