Check Valve Series

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Flange Tiny Drag Slow Close Muffler Check Valve

manufacturer: Shanghai Fengqi Industry Development Co., Ltd.
Eml: sales@fengqi.sh.cn

Tel: 86 (21) 3652 8716
Mob: (86) 138 1635 6498

product drawing

Flange tiny drag slow close soundproofing check valves
Flange tiny drag slow close soundproofing check valves

Features and usages

DHH44-type Flange tiny drag slow close muffler check valve is used in industrial, urban water supply and drainage, and high-rise residential, high-level hotels, pressure-increased water pump outlet. The design of the valve has full consideration of the applicable environmental requirements, using indined disc structure, to achieve no vibration, no noise, smooth operation, to ensure the quiet of hotel and residential environment, and has energy-saving effect. The Valve adopts delayed closure type to make partially inverted water flow within the system, thereby greatly reducing the water pressure of stopping pumps reflux, and eliminates the causing of destructive water hammer peak value. The closed sealing adopts nitrile rubber, with features of good sealing performance, damping and wear resistance, long service life, easy to maintain and so on.

Technical parameter

nominal pressure:1.0~1.6MPa
nominal diameter:200~2000mm
applicable medium: water,mud water,sea water,sewage
suitable temperature:0~80℃
flange standard:GB/T 17241.6 GB/T9113
test standard:GB/T 13927 AP1598

Typical installation diagrams

Flange tiny drag slow close soundproofing check valve typical installation diagrams
Flange tiny drag slow close soundproofing check valve typical installation diagrams

Dimensions & constructral diagram

Flange tiny drag slow close soundproofing check valve(pic1)
Flange tiny drag slow close soundproofing check valve(pic1)
Flange tiny drag slow close soundproofing check valve(pic2)
Flange tiny drag slow close soundproofing check valve(pic2)

The materials of main parts

part name body disc sealing ring stem buffering cylinder
material grey cast iron, carbon steel carbon steel NBR SS SS

The connection and external dimensions

DN (㎜) 200 250 300 350 400 450 500 600 700 800 900 1000 1200 1400 1600 2000
L 230 250 270 290 310 330 350 390 430 470 510 550 630 710 790 950
H 550 630 690 780 860 910 980 1070 1220 1320 1430 1550 1800 1980 2150 2550
B 450 520 590 670 750 780 850 970 1080 1200 1300 1450 1670 1880 1950 2450
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