H71 Clamp Lift Check Valve

• Media: Water-Vapour Oil
• Temperature: Low Temperature
• Material: Stainless Steel Carbon Steel Brass
• Connection Form: Flange Welding
• Structure: Swing
• Pressure: High Pressure, Medium Pressure and Low Pressure
• Model NO.: H71
• Function: Ddcv Double Lobe, Nrvr Silence, Sfcv Rubber Lobe, Nrvz Silence, Nrvg Silence
• Sealing Form: Hard Seal and Soft Seal
• Flow Direction: Unidirection
• Standard: DIN GB ANSI Bsw JIS
• Application: Industrial Usage, Water Industrial Usage, Household Usage
• Transport Package: Wooden Box
• Specification: DN15-DN800
• Trademark: XC
• Origin: China
• HS Code: 8481804090
• Production Capacity: 9999

Product Description

Overview of the H71 clamp lift check valve: the valve
is composed of the valve body, valve disc, spring, etc., horizontally or vertically installed in the pipeline system to prevent the backflow of the medium, with short structure, small volume, light weight; The valve flap closes quickly, and the water hammer pressure is small; Smooth flow channel, small fluid resistance; Sensitive action, good sealing performance.
1 Design specifications according to JB/T8937 API594 API6D2
structural length according to JB/T8937 API594 API6D DIN32023
4 Valve inspection and experiment according to GB/T13927 JB/T9092 API598 Two
, H71 clamp lift type check valve main technical parameters:

Model Number	Nominal pressure PN(MPa)	Test pressure PS(MPa)		Operating temperature (° C)	Applicable medium
		Housing	Seal
H71W-16T	1.6	2.4	1.76	200 or less	Water, steam, oil products, etc
H71H-25Q	2.5	3.75	2.75	235 or less
H71W-25H				300 or less
H71W-25P				200 or less	Corrosive media such as nitric acid
H71W-40H	4.0	6.0	4.4	300 or less	Water, steam body, oil products, etc
H71W-40P				200 or less	Corrosive medium such as nitric acid

H71 pair clamp lift check valve main parts materials:

Specification Model	Body	Flap	Spring
H71H-16Q, H71H-25Q	QT400-15	25	50CrCA
H71W-25H, H71W-40H	2Cr13	1Cr13	1Cr18Ni9Ti
H71W-16P, H71W-25P	ZG1Cr18Ni9Ti	1Cr18Ni9Ti	1Cr18Ni9Ti

Hydromechanical properties: fluid resistance coefficient, flow coefficient and opening pressure of H71 clamp lift check valve:

Nominal diameter		Fluid resistance coefficient when valve is fully open	The coefficient of water flow when the valve is fully opened at room temperature			Flow direction of fluid
DN	NPS		Kvm3= / h	CVU.S	CVU.K	write	left	-
						Open pressure approximation KPa
15	1/2	6.4	2.6	3.0	2.5	3	2	2.5
20	Three quarters of	5.1	6.4	7.5	6.3	3	2	2.5
25	4	4.1	12.6	14.8	12.3	3	2	2.5
32	1 1/4	4.1	19.7	23.1	19.3	3	2	2.5
40	1 1/2	3.8	29.5	63.9	28.9	3	2	2.5
50	2	3.5	54.6	99.9	63.5	3	2	2.5
65	2 1/2	3.5	85.4	150	83.7	3	2	2.5
80	3	3.2	128	286	125	3	2	2.5
100	4	2.8	244	286	249	3	2	2.5
125	5	2.9	375	439	368	3	1	2.2
150	6	3.1	522	611	512	3	1	2.2
200	8	3.2	915	1070	897	3	1	2.2

H71 clamp lift check valve main connection size

Nominal diameter DN		15	20	25	32	40	50	65	80	100	125	150	200
Structural length	Long series	25	31.5	35.5	40	45	56	63	71	80	110	125	160
	Short Series	16	19	22	28	31.5	40	46	50	60	90	105	140