When the pressure in an instrument or system rises too high, so too does the risk of damage to the equipment. As the last line of defense, a relief valve must prevent pressure from increasing beyond the maximum allowable working pressure.
The Welker RV-110 series Relief Valves are ideal for protecting high capacity gas instrumentation from overpressure events. Designed with ASME standards in mind, these safety devices have a 10% overpressure relief capacity and are made from stainless steel.
A relief valve is the path of least resistance when set pressure is exceeded. When the relief opens, excess pressure is diverted through the discharge until pressure returns to an acceptable level. Depending on site requirements and gas characteristics, excess pressure can be relieved to the atmosphere or routed through discharge piping. For non-hazardous gas applications and sites that allow venting to atmosphere, choose the RV-110A. For hazardous gas applications and sites that require gases to be vented to a safe area, go with the RV-110V, which has a ½“ FNPT port to connect to discharge piping.
Spring range options let you select and set the best spring for your application to meet your safety requirements. The RV-110V relief is field adjustable or can be factory set. Locknuts on both models prevent the spring setting from changing due to vibration. Openings in the adjustment screw and body enable the RV-110V setting to be securely locked if desired or required.
|Materials of Construction||316/316L Stainless Steel and Viton®
|Maximum Allowable Inlet Pressure||300 psig||500 psig|
|Temperature Range||-65 °F to 400 °F|
|May Vary Based on Seal Material|
|Connections||Inlet: 1/4" MNPT|
|Inlet: 1/4" FNPT
Outlet: 1/2" FNPT
|Flow Rate||Up to 70 scfm||Up to 135 scfm|
|Spring Range||15–30 psig||10–150 psig|
|31–90 psig||151–250 psig|
|Weight||0.25 lb||1.25 lb|
|Dimensions (l x w x h)||1" x 1" x 1.5"||1.25" x 2" x 5.5"|
|Feature||10% Overpressure Relief Capacity|
|Product Certifications||CE Compliance