Drip Pan Elbow Sizing

The drip pan elbow changes the outlet of the safety device from horizontal to vertical.

Drip pan elbow sizing.

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. Discharge elbow and drip pan unit attached to a safety valve with female npt outlet. Drip pan elbows must be provided with a suitable unrestricted self draining source. For safety valves with flanged outlets 2 to 4 use companion flange short nipple and drip pan elbow all same size as valve outlet.

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. Elbow and drip pan unit attached to a safety valve with female npt 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. 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.

O never attach the vent discharge piping directly to the safety valve. Pipe as shown on the drawings. Flanged valves 4 and smaller will require. Installation of the drip pan elbow has its own guidelines.

Installation the drip pan elbow is to be connected to the discharge connection of the safe ty relief valve by a short pipe nipple. 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. Touch the drip pan elbow. Pressure drop is difference between inlet pressure and reduced pressure.

Important length of discharge piping must be kept to a minimum. 6 and 8 inch elbows have integral 125 ansi b16 1 flange. 6 and 8 elbows have integral 125 ansi b16 1 flange. For flanged outlets companion flanges drip pan elbow and short nipple must be the same size as valve outlet or larger.

6 and 8 elbows have integral 125 lb. The length of discharge piping must be minimized. It shall have a pan to collect condensate in the steam riser pipe and a drain to pipe away the condensate. 6 and 8 elbows have integral 125 ansi b16 1 flange.

Model 299 drip pan elbow the illustration shows a discharge elbow and drip pan unit attached to a safety valve with female npt outlet. For safety valves with flanged outlets 2 to 4 use companion flange short nipple and drip pan elbow all same size as valve outlet. This would place undue stress and weight on the valve body. 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.

Do not plug the drip pan elbow. Drip pan elbow shall be made of cast iron and conform to the power piping code.