Product Features
1. Compact structure, easy to install; 
2. The rear stop screw can prevent the valve stem from accidentally falling off; 
3. The chrome plating treatment of valve stem threads and valve stem heads can extend the service life of valves; 
4. NPT male thread or ISO taper pipe male thread end connection.
  • Specification Parameters
  • PDF Download
  • Installation Instructions

Application

GBO-LOK relief valves can be applied to instrument devices (such as multi valve valve groups or pressure gauge valves) to reduce pipeline pressure to atmospheric pressure before dismantling instrument equipment or assisting in calibrating control devices.
 

Warning

When installing the GBO-LOK relief valve, please place a discharge pipe to drain the system fluid away from the operator. Always slowly open the relief valve. These valves do not contain packing, so there may be some liquid leakage after opening the valve. Operators must protect themselves from contact with system fluids.
 

Test

1. Each valve undergoes a nitrogen pressure test before leaving the factory, with a test pressure of 1000 PSI (69 bar) and a maximum leakage rate of 0.1 std cm³/ s;

2. Static pressure shell pressure test can be conducted at 1.5 times the maximum working pressure.
 

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