RFZ/*/* Gas Safety Relief Valve

RFZ*/* gas safety relief valve is a gas safety device. It adopts spring-loaded regulation structure and is commonly used in the downstreamsection of gas pipeline transmission and distribution system, providing overpressure relief protection for middle and downstream sysemof the pressure regulator.

It adopts the method of increasing slip and continuous adjustment, with large diaphragm connection area, thosignificantly improving the sensitivity. therefore, it is especially suitable for use in low and medium pressure pipe network.

Applicable medium

Natural gas, coal gas, liquefied petroleum gas and other non-corrosive gases.

Direct action of the spring. sensitive action. quick response, high accuracy of regulation, can discharge with back pressure, long workinglife, stable and reliable performance, can be adjusted online and automatically reseat after repeated jump: close enclosure, equal-diameterdischarging, compact strucfure and easy installation.

The micro-opening fail-closed relief valve has high precision, high performance and stable performance. After its continuous operation durability test was conducted in accordance with CJ/T335-2010 "Urban Gas Cut-Off Valve and Relief Valve", the external seal, accuracy and performance are still within the standard range. It can be repaired and maintained online, and the product is easy to manage and replace, with few spare parts and reliable operation, saving maintenance man-hours and costs.

This mechanism is in the form of air pressure-driven release. The main design is that the relief valve pad and the transmission mechanism are integrated. When the relief valve pad and the transmission mechanism are pushed by air pressure, the sliding mechanism will cause a displacement and the valve pad will separate from the valve port to form a release function. This structure has high response sensitivity and the overall design structure is more reasonable, and the starting accuracy meets the standard requirements;

Set pressure:P1:1.5-30KPa,30KPa-0.4MPa

Discharge pressure: ≤ 1.05Pf

Reseating pressure: ≥ 0.9Pf

Opening height: 1/4d (d is flow diameter)

Working temperature:-20℃ ~+60℃

Series specifications: DN20,DN25,DN40.DN50 ( G3/4",G1 1/2",GI",G2")