Structural Feature Short structural length,only 1/4~1/8 of that of traditional flanged check valve; Low volume,light weight,only 1/4~1/20 of those of traditional flanged check valve; Quick valve disc closedown,low water hammer pressure; Applicable for and easily installed for vertical or...
The features of check valve
Bolted Bonnet; Swing and lift disc; Metallic seating surfaces.
Body and Bonnet Connection
The body and bonnet of Class 150~Class 900 check valves are usually with studs and nuts. And the body and bonnet of Class1500~Class2500 check valves are usually of pressurized seal design.
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.
2" ~ 48"
(PN16 ~ PN1200)
-196℃ ~ 560℃
Carbon steel, Stainless steel, Alloy steel, Bronze
Water, Steam, Oil products, Nitric acid, Acetic acid
RF, RTJ, BW
Equipped with a professional factory, Naibang Valve is a professional manufacturer and supplier of JIS design Check Valve in China. If you want to buy quality product of various beautiful bags, you can get it at a cheap price from us.