Piston Type Non-Slam Check Valve, DN 40-1200mm, PN1.6/2.5/4.0 MPa

Piston Non-Slam Check Valve, DN 40-1200mm, PN1.6/2.5/4.0 MPa    Product Description The conventional water check valve switches off quickly that prompts water surge to cause the piping system pressure rising abruptly and triggers big noise. As a result, the pipeline and other equipments will be severely damaged. The piston slow closing check valve has resolved the problems that the normal check valve brought. The speed of opening and closing can be modulated to decrease the impact of water hammer and minimize noise, therefore making the effect of slow closing and silencing noise possible. Function:the piston slow closing non return check valve is not just preventing the fluid reversing, but also it can prevent water hammer or surge occurring. Therefore it makes a safety and silent on/off effect and provides the pipeline with safe operation.  Structure features l  Swift switch on/off speed regulating, easy handling l  Resilient seating and reliable sealing. l  Noise can be minimized to the lowest level; prevent the pump from reverse running. l  Built-in spring to ensure smooth and reliable action. l  Y-pattern wide valve body, low fluid resistance, strong anti-cavitation capacity. l  Both inner and outer surface are coated with environmentally friendly coatings to ensure corrosion resistance and safety. l  Installing at any angle    Technical parameters   Main Performance Parameters

Nominal Pressure (MPa)	1.6	2.5	4.0
Strength Test Pressure (MPa)	2.4	3.75	6.0
Sealing Ability Test Pressure (MPa)	1.76	2.75	4.4
Working Temperature	0~100°C
Ambient temperature	-30~100°C
Suitable Medium	Water

  Main parts list and materials    

No.	Parts name	Materials	No.	Parts name	Materials
1	Valve body	GGG50 with special heat resistant paint	7	Stem	06Cr19Ni10
2	Guide shaft	Copper alloy/GGG50	8	Cylinder body	ZCuAl9Mn2/GGG50
3	Seat	ZCuAl9Mn2/stainless steel	9	Bolt	06Cr19Ni10
4	Gasket	NBR	10	Cylinder cover	GGG50
5	Disc	ZCuAl9Mn2/GGG50	11	Piston	ZCuAl9Mn2
6	Spring	06Cr19Ni10	12	Pilot valve	Copper alloy

     Main Dimensions Packaging & Shipping  Polyethylene Bags---- Standart export carton----Wooden case or as per customers' requirement   Shipping:Seaworthy  30 days in normal after receipt of the order. It mainly depends on quantity and types of valve  Company Information  Guangdong Yongquan Valve Technology Co.,Ltd (YQ for short) was founded in 1982 and its headquarters is based in Foshan city, Guangdong province. YQ manufactures a broad range of valve products under the “YQ” brand.These valve products are designed for use in the toughest applications such as municipal water systems; water supply and drainage systems in high-rise buildings; fire protection systems; HVAC systems, and industrial water systems. YQ also manufacture valves for use in sea water, and other applications.   So far,YQ produces over 30 series, more than 5700 types of products, and over 50 of them are patented. Patented products are available in a wide range, including pressure reducing valves, pump control valves, gate valves, and backflow preventers, etc. The gate valve has been both FM approved and UL listed. Not only does the company have its products sell nationwide, but also they are exported to oversea countries. Up till now, YQ products have been applied in more than 400 water supply companies, 100 national key projects as well as 20 overseas projects. YQ products can be found in national key projects including the Bird Nest (the national Olympic stadium), the Water Cube (the national swimming center) and the national theater, as well as Guangzhou International Convention & Exhibition Center, etc. They are also exported to other countries, such as the U.S.A., Canada and Russia etc.   The company focuses on products’ technical development. The objective of the company is “to serve our customers with revolutionary valves”. A marketing strategy of product localization and globalization will be taken into account for the company’s long term sustainable development. For requesting more information, please visit our website on http://www.yq.com.cn/.      Contact Ways