NKE Sanitary Stainless Steel Tubes, Valves, and Fittings
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Sanitary Check Valve / Non-return Valve
Stainless Steel Tri Clamp Check Valve
The hygienic stainless steel non return valve contains a stainless steel body which houses a disc supported by a spring. When enough pressure is applied, the disc opens and allows product to flow through.
Tri clamp check valves are available in SS 304 and 316L. The seals are usually in EPDM, or Viton. Dairy check valves usually come in weld and ferrule ends, but other less commonly used sanitary union connections such as IDF Male Part or IDF Liner and Nut ends can be requested.
Method of Operation
Sanitary check valves works automatically when enough flow pressure pushes the disc so that the product flows through. When pressure is not high enough, the disc remains pushed shut so that product does not flow through.
Stainless steel check valves work automatically are not controlled by any external control. Bodies of tri clamp check valves are generally made up of plastic or metal. In most sanitary applications you will find the composition of the valve being 316L stainless steel and are CIP capable if applied properly.
Disk type stainless steel non return valves with have a slight pressure drop, because the disc is in the flow path.
Disc type sanitary non return valves can be used in both horizontal and vertical applications.
One important concept about sanitary non return valves is the cracking pressure. Cracking pressure is the minimum upstream pressure at which the valve will operate. These non-return valves are typically designed for and can be specified for a specific cracking pressure, although different springs can be used for different desired pressures.
Relatively small automatically operating valve body helps save space in tight pipe line situations
Spare parts are few and replaceable
A minimal pressure drop in pipe line flow due to disc always staying in the path of the flow
Size Availability- 0.5" to 4" (if you need a different size, call us to request it)
Material Availability- Body in SS 304 or SS 316, Gaskets in EPDM, VITON
Connection Availability- Weld end, Ferrule End
Pressure to Open Valve- 0.5 psi to 3 psi depending on size