Application
DH series of check valve used for stainless steel piping system, in order to prevent fluid backflow purpose.
Operational Principle
When the stem lower pressure the stem above the pressure and spring force, check valve is opened.
When the pressure balance valve, When the valve will close.
A higher reverse pressure acts on the valve toslose.
DH check valve has two structural forms:
DH check valve with hoop connection mode, which is characterized by economic applicable, is widely used in food industry.
Technical data
| Material | Contact product parts | 316L(1.4404) |
| non-contact product parts | 304L(1.4301) | |
| Provide EN 10204 3.1B certificate | ||
| Seal material | Standard | MEPD |
| Option | NBR\FPM\Silicone | |
| All seal materials comply with FDA 177.2600 | ||
| temperature | Running working temperature | -20～+135℃(EPDM) |
| Aterilization temperature | 150℃(Max 20min) | |
| pressure | Working pressure | 0~10bar |
| Control air pressure | 5~8bar | |
| suface treatment | Internal surface | Ra≤0.8μm |
| External surface | Ra≤1.6μm | |
| connection | Connection standard | welded end:DIN 11850 series2 |
| welded end:INCH pipe standard | ||
| Connection method:welding、thread、clamp、flange | ||