Products
DVH Series High-Pressure Diaphragm Valves
● No internal threads or springs
● 3500 psig pressure rating at ambient temperature
● Diaphragm material：Ni-Co alloy/UNS R30003
● Individual helium mass spectrometer leak testing per valve
● ~1¾turns from fully open to closed position
● 3500 psig pressure rating at ambient temperature
● Diaphragm material：Ni-Co alloy/UNS R30003
● Individual helium mass spectrometer leak testing per valve
● ~1¾turns from fully open to closed position
Product Description
Introduction
Achieving ultra-low leakage rates through a diaphragm-type hard-sealed structure, the all-metal housing eliminates packing while incorporating no internal threads or springs to ensure high cleanliness, operational stability, and extended lifespan. with a pressure rating of 3500 psig at ambient temperature, this valve is ideal for applications demanding stringent cleanliness and pressure tolerance.
Technical specification
| Operating Pressure: | Vacuum to 3500 psig |
| Flow Coefficient (cv): | 0.3 |
| Operating Temperature: | -73℃-121℃ |
| Internal Leakage Rate: | ≤ 1×10-11 Pa.m³/sec.He |
| External Leakage Rate: | ≤ 1×10-11 Pa.m³/sec.He |
| Internal Surface Roughness: | Ra ≤ 0.13μm |