HH44XMicro-friction slow-closing check valve application：Suitable for nominal pressurePN1.0MPa~42.0MPa、Class150-2500;Nominal Bore SizeDN15~1200mm、NPS1/2~48;Operating Temperature-196~540℃On various pipelines, used to prevent backflow of the medium. Suitable for a variety of media such as water, steam, oil, nitric acid, acetic acid, strong oxidizing agents, and urea, by selecting different materials.
HH44XMicro-friction slow-closing check valveMaterial：
Carbon steel, low-temperature steel, dual-phase steel(F51/F53)Titanium alloy, Aluminum bronze, Inconel(INCONEL625)、SS304、SS304L、SS316、SS316L;Chromium-molybdenum steel, Monel(400/500)、20#Alloys, Hastelloy, and other metal materialsMarkMarkCompliant with standards：
1Design and Manufacturing:API594、API6D、JB/T8937
2Structural Length:API594、API6D、DIN3202、JB/T8937
3Pressure-Temperature Grade:SNSIB16.34、DIN2401、GB/T9124、HG20604、HG20625、SH3406、JB/T74
4Testing and Inspection:API598、JB/T9092
5Pipe Flange:JB/T74~90、GB/T9112!9124、HG20592~20635、SH3406、ANSIB16.5、DIN2543~2548、GB/T13402、API605、ASMEB16.47
HH44XMicro-friction slow-closing check valve features：
The valve primarily consists of the valve body, cover, plate, balancing weight, piston, and regulating valve. It is used for drainage and water supply pipes, installed at the pump outlet to prevent reverse flow of the medium and destructive water hammer for firefighting. It features a light valve disc, large opening, significant energy-saving effect, low fluid resistance, and a water hammer elimination structure. Reasonable, reliable sealing performance, wear-resistant, long service life, smooth operation, no vibration, and no noise.Applicable Medium:Water, Oil, Seawater, Sewage，Applicable Temperature:0~80℃(As required200℃)
Structural Features:
1Short structure length, only half the traditional lengthCheck ValveNo content provided for translation.1/4~1/8
2Compact and lightweight, weighing only a fraction of traditional micro-friction check valves.1/4~1/20
3Valve disc closes rapidly, with minimal water hammer pressure.
4Suitable for both horizontal and vertical pipelines; easy installation
5Channel unobstructed, fluid resistance low
6Responsive, high-sealing performance
7Short valve stem stroke, low valve closing impact
8Overall structure: simple and compact, aesthetically pleasing
9Long service life, high reliability
Technical Specifications：
Nominal Pressure:1.0~2.5MPa Nominal Bore Size:40~800mm Applicable Medium:Water, weakly corrosive liquids; Applicable temperature:0~80℃(As required200℃) Flange Standard:GB/T 17241.6 GB/T9113 Test Standards:GB/T 13927 AP1598
Dimensions and Weight：
HH44XMicro-friction slow-closing check valveOrdering Instructions:
1.When the user has confirmed the valve type and model (especially non-standard models), the user should correctly describe the meaning and requirements of the model.
2.Customers should order based on the product models listed in the sample. If there are special requirements for the product items, please specify them in the order.
1Structural Length2Flange Standard3Valve structural type: such as full bore or reduced bore passage, body and cover connection type4Valve internals and other material requirements5Pressure tests, inspection standards, markings, and other requirements
3When the application of the valve is very critical or the environment is relatively complex.,Please provide design drawings and detailed specifications to the fullest extent, and our experts will review and ensure quality control for you.
4.Our company can customize electric devices to meet specific customer requirements.,Pneumatic drive unit,Turbine unit.
5.Our valves, produced by our company, meet all the requirements specified in the order. Each product undergoes rigorous inspections and tests according to the relevant standards before leaving the factory.
6.All Zhongzhi Valve products come with a warranty period: official installation and use by the customer12Within a month or upon product shipment18Within a month.
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