Sanitary check valve

Supplier Info.

Applicationã€€

The check valve opens when the pressure in the lower part of the stem exceeds the pressure on the stem and the spring force.

When the pressure on the stem is balanced, the valve will close.

A higher reverse pressure acts on the stem to close it.

ZH4 sanitary check valve has two types of structure

ZH4-1 check valve adopts clamp connection, which is economical and applicable, and is widely used in food industry.

ZH4-2 check consists of thickened valve body and two-piece method, which is characterized by easy installation and disassembly.

working principle

ZH4 series check valves are used in stainless steel piping systems to prevent fluid backflow.

Correct installation position of safety valve (Fig.)Pressure drop / capacity comparison chartTechnical parameter

Metal material	Product wetted	304L/316L (DIN-1.4307/1.4404) forged304L/316L(1.4307/1.4404) Forged
	Non-product wetted	304(1.4301)
	We can provide EN 10204 3.1B certificate.
Seal material	Standard	EPDM
	Options	FPM ã€NBR/PTFEã€Silicone
	All seal materials comply with FDA 177.2600.
Temperature	Continuous working temperature	-20~+135â„ƒ(EPDM)
	Sterilization temperature	150â„ƒ(max 20min)
Pressure	Opening pressure	â‰ˆ0.08bar
	Max working pressure	10bar
Surface treatment	Internal surface	Raâ‰¤0.8Î¼m
	External surface	Raâ‰¤1.6Î¼m
Connection	Connection standards	Welding end: DIN 11850 series 2
		Welding end: Inch pipe diameter standard
	Connection methods: welding, thread, clamp, flange

Clamp - threaded

Size (mm)

Clamp - weldedSize (mm)

Clamp - clamp typeSize (mm)