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H77X對夾蝶型止回閥產品概況

H77X對夾蝶型止回閥產品簡介

H77X對夾蝶型止回閥、對夾止回閥是用于防止管道和設備使用中介質倒流的一種閥門；其閥板采用對偶板上加兩個扭力彈簧的設計，可使閥板在壓力范圍內自行開閉。可根據用戶的需要，而選用不同的膠種及其它各部件。閥體結構長度為短系列，剛性好，安裝方便；使用性能可靠，抗干擾性好。

Product Introduction:

Wafer swing check valve is used to prevent media from flowing backwards in pipeline and device ;Its design two torque springs on the double disks which are closed by torque springs in the scope of pressure .Different rubber and other parts will be used according to requirement of customer .Face to face dimension for body is short series .It is of good stiffness and convenient installation .

H77X對夾蝶型止回閥主要性能參數：Main Performance Parameters:

公稱壓力 Nominal Pressure (MPa)	公稱通徑Nominal Diameter (mm)	試驗壓力 Testing Pressure (MPa)		適用溫度Suitable Temp	適用介質 Suitable Media
		殼體 Shell	密封 Seal	^oC
1.0	50~700	1.5	1.1	-15 ~150	淡水、污水、海水、空氣、蒸汽、食品、藥品、酸類、油類等。Fresh water, Sewage, Sea water, Air, Vapor, Food, Medicine, Acids, Oils, etc.
1.6	50~450	2.4	1.76

H77X對夾蝶型止回閥主要零部件材質：Materials of Main Parts:

名稱 Name	閥體 Body	閥板 Disc	轉軸 Stem	密封圈 Sealing Ring
材料 Material	HT200 QT450 WCB	QT450 316 304 C954	316 304 40Cr	NBR, EPDM

H77X對夾蝶型止回閥主要連接尺寸及重量：Outline Dimensions & Connection Dimensions & Weight

公稱通徑Size (mm)	D	D1	D2	L	R	t	重量 Weight (kg)
50	107	65	43.3	43	28.8	19	1.5
65	127	80	60.2	46	36.1	20	2.4
80	142	94	66.4	64	43.4	28	3.6
100	162	117	90.8	64	52.8	27	5.7
125	192	145	116.9	70	65.7	30	7.3
150	218	170	144.6	76	78.6	31	9.0
200	273	224	198.2	89	104.4	33	17
250	328	265	233.7	114	127	50	26
300	378	310	283.9	114	147	43	42
350	438	360	332.9	127	173	45	55
400	489	410	381.0	140	198	52	75
450	539/555	450	419.9	152	217.8	58	101/107
500	594	505	467.8	152	241	58	111
600	695	624	572.6	178	298	73	172
700	800	720	680	229	354	98	219