O never attach the vent discharge piping directly to the safety valve.
Drip pan elbow sizing.
Do not plug the drip pan elbow.
A drip pan elbow is a specialty elbow fitting configured with a pan at the top that is used to collect and remove condensate in steam systems.
Drip pan elbow shall be made of cast iron and conform to the power piping code.
For use with safety relief valves the drip pan elbow provides a self draining outlet to assure unrestricted discharge and keeps the safety valve from filling with water.
6 and 8 elbows have integral 125 lb.
Drip pan elbows for use with safety relief valves shall be astm a126 cl b cast iron and be of the same size as the valve outlet or larger.
6 and 8 elbows have integral 125 ansi b16 1 flange.
O the safety valve vent pipe may not touch the drip pan elbow o the.
Discharge elbow and drip pan unit attached to a safety valve with female npt outlet.
6 and 8 inch elbows have integral 125 ansi b16 1 flange.
Pressure drop is difference between inlet pressure and reduced pressure.
Pipe as shown on the drawings.
Important length of discharge piping must be kept to a minimum.
For safety valves with flanged outlets 2 to 4 use companion flange short nipple and drip pan elbow all same size as valve outlet.
Important length of discharge piping must be kept to a minimum.
Elbow and drip pan unit attached to a safety valve with female npt outlet.
Touch the drip pan elbow.
Installation the drip pan elbow is to be connected to the discharge connection of the safe ty relief valve by a short pipe nipple.
The drains on the drip pan elbows are designed to collect any condensed liquid and rain and allow flow safely away from the safety valve.
For safety valves with flanged outlets 2 inch to 4 inch use companion flange short nipple and drip pan elbow all same size as valve outlet.
For flanged outlets companion flanges drip pan elbow and short nipple must be the same size as valve outlet or larger.
Installation of the drip pan elbow has its own guidelines.
6 and 8 elbows have integral 125 ansi b16 1 flange.
It shall have a pan to collect condensate in the steam riser pipe and a drain to pipe away the condensate.
For safety valves with flanged outlets 2 to 4 use companion flange short nipple and drip pan elbow all same size as valve outlet.
Use table as shown drain to waste 11 2 min make short as possible drain waste nom pipe size f nom pipe size a pipe size riser supported overhead g e d c b 60 60 40 60 40 40 30.
The drip pan elbow changes the outlet of the safety device from horizontal to vertical.
The discharge vent piping should be supported independently from the safety valve drip pan elbow assembly to prevent undue stresses on the safety valve.
Flanged valves 4 and smaller will require.
This would place undue stress and weight on the valve body.
