Low Resistance Silent Check Valve

Name: Low Resistance Silent Check Valve
Brand: ZECO Valve Group

Basic information of Low Resistance Silent Check Valve

This valve is installed at the water outlet of the pump to prevent backflow of the medium and damage to the pump by the water hammer.

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Dof960 series of cases

Features of Low Resistance Silent Check Valve

1. Flow deflector is a streamlined design with small flow resistance and energy saving;
2. Disc is completely covered with adhesive and reliable sealing;
3. Closed by its own spring force to prevent water hammer;
4. The closing sound is very low.

Principle-41 of Low Resistance Silent Check Valve

Low resistance silent check valve mainly consists of the valve body, seat, flow deflector, disc, bearing and spring and other main parts. Water loss is about 1/2 compared with similar check valves. At the same time, when the pump stops, the disc closes for a short time, which can be closed quickly, avoiding the water hammer and preventing the sound of huge water hammer.

Installation and Commissioning of Low Resistance Silent Check Valve

This valve shall be installed vertically with the body axis plumb. For specific use, please consult ZECO Valve Group.

Part	Material	Standard
Body	Ductile Iron	EN 1563/DIN 1693
Flow Deflector	Ductile Iron	EN 1563/DIN 1693
Stem	Stainless Steel 431	EN10088-1/ASTM A959
Disc	Ductile Iron + EPDM	EN 1563/ISO 4633
Nut	CuZn39Pb1 / C37000	EN12167/ASTM B135
Spring	Stainless Steel 431	EN10088-1/ASTM A959
For the materials options not listed, consult factory. ZECO manufactures valves in more than 50 different alloys.

Product scope, Standards & Materials of Low Resistance Silent Check Valve

Size Range: 2"~24"
Pressure Rating: 10bar ~ 25bar
Face to Face Dimensions: AMSE B16.10, EN558-1
Flange End Dimension: AMSE B16.1/16.42, AS4087, EN1092-2
Coating: Fusion Bonded Epoxy Coating
Inspection and Test: ISO 5208 / EN 12226-2

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