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NRVZ silent check valve, silent check valve

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NRVZ Silent Check Valve, Silent Check Valve

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I. Overview of NRVZ Silent Check Valve:
Silent check valve refers to the valve that automatically opens and closes the valve flap based on the flow of the medium itself to prevent the medium from flowing backward. It is also known as a check valve, check valve, reverse flow valve, and back pressure valve. The check valve is an automatic valve, and its main function is to prevent the medium from flowing backward, to prevent the pump and the drive motor from reversing, and to release the medium from the container. Check valves can also be used to supply lines to auxiliary systems whose pressure may rise above the system pressure. Check valves can be mainly divided into swing check valves (rotating according to the center of gravity) and lift check valves (moving along the axis).
The valve consists of valve body, valve seat, fluid guide, valve disc, bearing pad and spring. The internal flow channel adopts a streamlined design, with small pressure loss, short opening and closing stroke of the valve disc, and can be quickly closed when the pump is stopped to prevent huge water hammer sound and form a silent effect. This valve is mainly used for water supply, drainage, fire protection, and HVAC systems. It can be installed at the outlet of the pump to prevent the medium from flowing backward and the water hammer from damaging the pump. 2. Main technical parameters:

Nominal pressure 1 1.6 2.5
Working pressure 1 1.6 2.5
Seal test pressure 1.1 1.76 2.75
Shell test pressure 1.5 2.4 3.75
Applicable medium water
Medium temperature X <80 ℃, T≤150 ℃, H≤200 ℃
3. Main appearance dimensions:
Nominal diameter L
50 120
65 150
80 180
100 240
125 300
150 350
200 450
250 500
300 550
350 572
400 600
450 650

If you have any enquiry about quotation or cooperation, please feel free to email us at kvc@vip.163.com or use the following enquiry form. Our sales representative will contact you within 24 hours. Thank you for your interest in our products.

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