with high frequency direct lifting diaphragm construction. Open from 0 bar with large flow rate. Applied to low pressure system. Available in 12v dc, 24v dc, 24v ac, 110v ac and 220v ac. 2 materials for your choice, brass and stainless steel. Suitable for water, air, oil, gas, etc. Widely used in various automatic applications. Available in G and NPT thread.