Relief Valves - Length of Vent Pipes
Maximum length of relief valve vent lines
can be calculated as
lm = 0.56 (1.1 pr + 14.7)2 di5 / qa2 (1)
where
lm= maximum length of vent line (feet)
pr= relief pressure (psi)
di= inside diameter (inches)
qa= air flow (lbs./min)
Related Topics
• Gases and Compressed Air
Air, LNG, LPG and other common gas properties, pipeline capacities, sizing of relief valves.
Related Documents
Heating Systems - Safety Valves Size vs. Boiler Power
Safety valves with boilers ranging 275 to 1500 kW.
Pilot Operated Safety Valves in Liquid Systems
Calculate pilot operated relief valves in liquid systems.
Safety Relief Valves - Capacities vs. Pressure
Maximum safety valve free air relief capacity.
Safety Valve Standards
The most common used safety valve standards in Germany, UK, USA, France, Japan, Australia and Europe.
Spring Operated Safety Valves in Liquid Systems
Calculate spring operated relief valves in liquid systems.