China Cast Steel Lift Type Check Valve Wafer Type Flanged

MAIN FEATURES:
The valve is opened/closed by the valve disc moving in a direction parallel to the valve seat hole axis and can only be installed on horizontal pipelines with the major function of preventing medium backflow when shutting down the pump and maintaining the water column required by pumping.
Design:
Design standard as per: BS1868, ASME B16.34, GB/T 12235.
Compact and reasonable product structure, reliable tightness and good performance;
Lift piston type disc;
Rapid closing and flexible actions of the valve disc
Small closing impact, water hammer is not liable to be generated;
Design standard as per: BS1868, ASME B16.34, GB/T 12235.
Compact and reasonable product structure, reliable tightness and good performance;
Lift piston type disc
Product Range:
Body material: Carbon steel, stainless steel, alloy steel
Nominal diameter: 1/2"~16"(DN15~DN400)
Pressure range: Class150~2500(PN10~PN420)
End connection: RF, RTJ, BW
Working temperature: -196º C~+560º C
The features of check valve
Bolted Bonnet; Swing and lift disc; metallic seating surfaces.
Body and Bonnet Connection
The body and bonnet of Class150~Class900 check valves are usually with studs and nuts. And the body and bonnet of Class1500~Class2500 check valves are usually of pressurized seal design.
Body-To-Bonnet Joint
Stainless steel + flesible graphite wounded gasket is used for Class 150 and Class 300 check valve; Stainless steel + flexible graphite wounded gasket is used for Class 600 check valve, and joint gasket is also optional for Class 600 check valve; Ring joint gasket is used for Class900 check valve; Pressurized seal design is used for Class 1500~Class 2500 check valves.
Seat
For carbon steel check valve, the seat is usually forged steel. The sealing surface of the seat is spray welded with hard alloy specified by the customer. Renewable threaded seat is used for NPS<10 check valves, and welded on seat can be also optional if being requested by the customer. Welded on seat is used for NPS>12 crbon steel gate valves. Forstainless steel check valve, integral seat is usually adopted, or to weld hard alloy directly integrally. Threaded or welded on seat is also optional for stainless steel check valve if being requested by the customer.
Our Advantages:
1. We Are Factory: FYV has 3 production bases and 1 foundry which located in Wenzhou, Shanghai and Lishui city of China. The Factory Size in Square Meters: 110, 000. FYV has over 600 staff members, more than 60 technical engineers, a digital process center and more than 350 sets of various middle and large equipments. The annual sales revenue reaches above $80 million US Dollars.
2. Regional Sales: We provide specialized sales service refers to different kind of region all over the world. Each sales team member is good at the local language and well experienced to the responsible market. For example: Russian, German, Spanish, Japanese, etc.
3. Low MOQ: Our factory owns the casting company by itself. We are always ready for providing the sample and producing some small orders, in order to meet the business well.
4. OEM Accepted: We can make the products with the client's demand standard or the custom requirement.
5. Complete Service: We are always ready to hear from you, be responding to your enquiry immediately. Our trade manager is always online for you.
6. Good Quality: We have strict quality control system and amounts of testing equipments for different kind of valve, such as size, pressure, working environment etc. We are winning the market reputation with the time goes by.
7. Quick Delivery: We have the large stock for some hot products.
8. Competitive Prices: We are the manufacturing company which not only has our own manufacturing workshop, but the casting company as well. We provide the straight factory price and service to our customer.

ITEMPART NAMEMATERIAL1BodyASTM A216 GR.WCB2Seat RingASTM A105 + Setllite Faced3DiscASTM A216 GR.WCB + 13Cr Faced4Disc WasherASTM A276 Type 4105Disc Nut PinStainless Steel6Disc NutStainless Steel7HingeASTM A216 GR.WCB8Hinge PinASTM A182 GR.F69Bearing BracketASTM A216 GR.WCB10Spring WasherCarbon Steel11Hex, BoltCarbon Steel12GasketSoft Iron + Graphite13Cover BoltASTM A193 GR.B714Cover Bolt NutASTM A194 GR.2H15CoverASTM A216 GR.WCB16Eye BoltCarbon Steel

Cast steel check valve-Class 150 dimensions & weights

SizeL/L 1L2HWeight RFinmminmminmminmmkg2"508.002038.502166.10155192.5"658.502169.002296.70170263"809.5024110.002547.09180294"10011.5029212.003058.66220466"15014.0035614.5036810.55268778"20019.5049520.0050812.2031016310"25024.5062225.0063514.5737022012"30027.5069928.0071116.7342536614"35031.0078731.5080018.7047542816"40034.0086434.5087620.6752555518"70038.5097839.0099122.8358077520"45038.5097839.0099124.7262883524"50051.00129551.50130834.72882118030"75060.001524------------38.279721960