Butterfly type slow closing check valve can be used in the water supply and drainage pipeline of clean water, sewage, sea water and other media, which can not only prevent the backflow of medium, but also effectively limit the destructive water hammer, so as to ensure the safe use of the pipeline. The check valve has the advantages of novel structure, small size, reliable sealing, smooth opening, wear resistance, long service life, no medium influence, small flow resistance, wide application range and good energy saving effect.

Butterfly type slow closing check valve can be used in the water supply and drainage channels of clean water, sewage, sea water and other media. It can not only prevent the backflow of medium, but also effectively limit the destructive water hammer and ensure the safe use of pipelines. Zhyh46h, zhyh46w and ZHYH46EJ slow closing butterfly check valves have novel structure and small volume. Zhyh46h, zhyh46w and ZHYH46EJ slow closing butterfly check valves produced by Shanghai first ring road have reliable sealing, stable opening and closing, wear resistance, long service life, oil pressure slow closing not affected by medium, small flow resistance, wide application range and good energy saving effect.

Urban construction, chemical industry, metallurgy, petroleum, pharmaceutical, food, beverage, environmental protection

 

model	Valve body and butterfly plate	Valve rod, cylinder and piston	Spring	valve seat
ZHYH46H/W-16/25/40CP ZHYH46ej-16/25	Carbon steel, stainless steel	stainless steel	stainless steel	stainless steel

 

technical parameter	Nominal pressure （MPa）	Test pressure（MPa）		working temperature （℃）	Applicable media
		housing	seal up
ZHYH46H/W-16/25/40CP ZHYH46ej-16/25	1.6	2.4	1.76	≤120	Clear water Seawater and sewage
	2.5	3.75	2.75
	4.0	6.0	4.4

 

 

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Nominal diameter  DN(mm)	L	H	H1	Nominal diameter  DN(mm)	L	H	H1
100	240	280	115	450	470	585	351
125	260	290	142	500	500	640	379
150	275	310	172	600	560	720	434
200	305	350	210	700	620	491
250	340	340	415	240	800	680	792	549
300	370	450	264	900	740	900	600
350	400	480	294	1000	800	975	655
400	435	550	324	1200	920	1140	770