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Pumping check valve

General valves are indispensable control components in industrial piping systems, with a wide range of functions. It mainly includes gate valve, globe valve, check valve, regulating valve, ball valve, etc., which are widely used in petrochemical, electric power, metallurgy, water treatment and other fields. Universal valve has the characteristics of simple structure, convenient operation and reliable performance, and plays an important role in industrial production.

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Product classification

General Purpose Valve Series

Check Valve Series

Key words:

SMAK

Product Details

Extraction check valve.

用途/Application

The valve is suitable for the feed water preheating system of power station steam turbine or other industrial pipeline systems requiring quick closure. It is quickly closed under the action of air source pressure (O.5 ~ 0.7Mpa) or return spring (closing time <0.05 5S) to prevent mass backflow from damaging steam turbine and other devices.
Applicable medium: water, steam
Main Performance Specifications/Main technical specification

Model	Nominal pressure Pressure Class	Strength test Pressure Shell test Pressure	Seal test pressure SeatTest Pressure
Model	Mpa	Mpa	Mpa
SAH664H-20	2.0	3.0	2.20
SAH664H-50	5.0	7.5	5.50
NH664H-100 NH664Y-100C6	10.0	15.5	11.0

PRESSURE TEMPERATURE REFERENCE/Pressure-temperature ratings

Model	Operating temperature Working temperature °C
Model	38	200	260	316	371	399	427	454	500	540
SAH664H-20	2.0	1.4	1.2	1.0	0.9	0.65	0.55
SAH664H-50	5.1	4.4	4.2	3.9	3.75	3.55	2.9
SAH664H-100	10.2	8.5	8.5	7.7	7.5	7.1	5.8	6.85	5.5
SAH664Y-100C6	10.3	9.3	9.0	8.2	8.0	7.5	7.1			3.0

Material Material for main parts

Part name	20 NH664H-50 100	NH664Y-100C6
Body, Disk,Bonnet,Hinge Pin	WCB	WC6
轴 Shaft	2Cr13	20Cr1Mo1V1A
Middle flange bolt Bolt/Nut	35/45	20Cr1Mo1V1A/45

Main size of outside & weight

Model: SAH664H-20

Size (mm)	Overall dimension Overall Dimension(mm)					Weight (Kg)
Size (mm)	L	d	D	H	H1	Weight (Kg)
450	740	428	482	990	755	625
500	790	478	532	990	852	760
600	915	574	634	990	1150	1080
700	1040	678	726	990	1240	1250

Model: SAH664H-50

Size (mm)	Overall dimension Overall Dimension(mm)				Weight (Kg)
Size (mm)	L	d	D	H	H1
200	526	198	248	815	240
300	610	296	332	845	360
350	838	332	380	889	620

Model: SAH664H-100

Size (mm)	Overall dimension Overall Dimension(mm)				Weight (Kg)
Size (mm)	L	d	D	H	H1
250	680	236	302	904	390
500	1020	478	532	1240	1490

Model: SAH664H-100C6

Size (mm)	Overall dimension Overall Dimension(mm)				Weight (Kg)
Size (mm)	L	d	D	H	H1
250	526	188	248	815	280
500	680	236	302	904	390

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