Basic check valve restrictor check valve higher cracking pressures 2 to 40 psi, depending on size 14 to 212 line size mnpt 450 to 2500 cwp npt threaded ends stainless steel construction. The nonslam check valve can be equipped with a counterweight and may have an optional hydraulic damper cylinder. The keckley wafer double disc check valves are constructed from rugged castings that are machined to exacting specifications. Check, ball and plug valves zoeller engineered products. Each of these dft check valve s addresses the particular needs of a modern day customer. High performance nozzletype nonslam check valves crane.
The smooth, nearlyconstant area internal passages allow for high capac ity flow with minimum turbulence. In severe pumping applications, almost all basic check valves will slam, and in. Water hammer is a common problem in supply systems whenever the steady state condition of the flow is. The valtek tekchecktm, nonslamming piston check valve, provides rugged performance and reliable service in corrosive and noncorrosive, gas and liquid applications. Table 4 illustrates typical flow coefficients for 12 in. You have clicked a page that seems to be very popular. Erhard non slam nozzle check valve pdf 1,67 mb erhard non slam nozzle check valve spanish pdf 1,68 mb declaration of confirmity tp032 russian pdf 809,91 kb declaration of confirmity tp010 russian pdf 936,41 kb operating instruction standard pdf 96,28 kb product categories. Boilers, pump systems, storage tanks, heat exchangers. Crowncrownjudd usa nonslam piston check valves utilize a simple design that provides longterm reliability, superior performance, and low operating costs.
Inline check valves are available in a variety of designs. Ask us how to spec the right check valve, or get catalogs, chemical resistance guides and submittals. The closing time of the valve can be controlled, with limits, by metering the hydraulic flow in a damper unit. Nonslam check valve succeeds by keeping it simple glenfield invicta. Alibaba manufacturer directory suppliers, manufacturers. The most important aspect of a check valve in a piping. Additional materials and pressure classifications available. Reference individual technical data pages for standard disc, shaft, spring, and elastomer seat. Lighter weight, by 8090% than nonconventional fullbody check valves. Key differences between nonslam and swing check valves. Nonslam check valve swing type ace valve corporation. When a check valve is needed to prevent backflow, nibco has a complete lineup, including the nibco ring check with selfclosing disc, horizontal swing, sliding disc, silent check and y pattern.
Springassisted, non slam, axial flow, silent check valves. Springassisted, nonslam, axial flow, silent check valves. Over the following d ecades, other customers needs led to the development of the alc, dlc, dsv, excalibur, glc, pdc, scv and wlc styles of axial ow, non slam silent check valves. In such critical service applications, nozchek nonslam check valves offer the following benefits. Springassisted, nonslam, axial flow, silent check valves dfts family of. Each of these dft check valves addresses the particular needs of todays customer.