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Micro-resistance slow-closing check valve

Technical Specifications

Item model number: HH44X

Nominal pressure: PN1.0～2.5MPa

Nominal diameter: DN40～800mm

Applicable medium: water, weak corrosive liquid

Applicable temperature: 0～80℃ (up to 200℃ if necessary)

Flange standard: GB/T 17241.6 GB/T 9113

Test standard: GB/T 13927 AP1598

Sales Hotline：

0086-21-59110018

Product Details

Product Description

The micro-resistance slow-closing check valve is used for water supply and drainage pipelines. It is installed at the outlet of the pump to prevent the backflow of the medium and eliminate the destructive water hammer, and effectively reduce the pressure of the valve closing water hammer, which can ensure the safe operation of the pipeline network. It has the characteristics of light valve disc, large opening, significant power saving effect, small fluid resistance, novel design of water hammer elimination mechanism, stable and reliable sealing performance, wear resistance, long service life, stable operation, no vibration and no noise.

Material Of Main Parts

Part Name	Body, bonnet	Disc	Shaft
Material	Grey cast iron, cast steel	Steel plate and rubber assembly	Stainless steel

微阻缓闭止回阀(图1)

Main External Connection Dimensions

DN（mm)	40	50	65	80	100	125	150	200	250	300	350	400	450	500	600	700	800
H	200	230	290	310	350	400	480	500	600	700	800	900	1000	1100	1300	1400	1500
L	300	300	320	354	350	380	500	580	670	730	820	920	950	1100	1200	1550	1700
B	220	270	290	300	320	340	410	450	550	580	630	700	800	900	990	1120	1300