sanitary check valve is used in stainless steel pipe systems to prevent backward flow of fluids.
Operating Principle
When the pressure of lower valve stem exceeds that of upper valve stem and spring force, ZH4 sanitary check valve is open. When the pressure of upper valve stem equals that of lower valve stem, ZH4 sanitary check valve is closed. Greater reverse pressure acting on the valve stem causes the valve to close.
ZH4 sanitary check valve has two configurations.
ZH4-1 sanitary check valve adopts clamp connection method. It is affordable and widely used in food industry.
ZH4-2 sanitary check valve consists of a thickened valve body and two flanges, which is easy to install and remove.
Technical Data
Metal material |
Product wetted |
304L/316L (DIN-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 ,NBR/PTFE,Silicone | |
All seal materials comply with FDA 177.2600. | ||
Temperature |
Continuous working temperature |
-20~+135ºC(EPDM) |
Sterilization temperature |
150ºC(max 20min) | |
Pressure |
Opening pressure |
≈0.08bar |
Max working pressure |
10bar | |
Surface treatment |
Internal surface |
Ra≤0.8μm |
External surface |
Ra≤1.6μm | |
Connection |
Connection standards |
Welding end: DIN 11850 series 2 |
Welding end: Inch pipe diameter standard | ||
Connection methods: welding, thread, clamp, flange | ||
Correct Installation Method
Pressure Drop/Capacity Comparison Diagram
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Dot peen marking works by electromechanically striking a carbide or diamond stylus assembly against the surface of a part to be marked.For example,dog tag engraver.The result is a succession of dots to create digits, text, logos, and 2D data matrix codes. Each such dot is the result of a pulsed current that runs through a solenoid, punches a magnet toward the surface, and subsequently returns the stylus to its starting position, awaiting the next pulse. Because each pulse occurs in only a fraction of a second, an entire 2D data matrix code, for example, can be completed in seconds (depending on the size).
Notable Characteristics:
Cost effective
Requires no consumables
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Will mark any material (including hardened steel)
Compressed air is not required.
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