Drip Pan Elbow Installation

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

Drip pan elbow installation. Drip pan elbow installation has its own guidelines. Cast iron drip pan elbows for steam service. Use table as shown drain to waste. O the safety valve vent pipe may not touch the drip pan elbow o the.

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. Drip pan elbows can improve the performance and extend the life of the safety valve by alleviating axial loads on the valve which could impair its operation and shut off drip pan elbow installation guidelines. 6 and 8 inch elbows have integral 125 ansi b16 1 flange. 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. Spirax sarco a leader in steam solutions manufacturers drip pan elbows. Installation for power boilers and unfiredpressure vessel service. Installation of the drip pan elbow has its own guidelines.

Important length of discharge piping must be kept to a minimum. Dimensions pressure drop pounds per square inch multipliers to be used 6 and 8 elbows have integral 125 lb. Pressure drop is difference between inlet pressure and reduced pressure. Drip pan elbow to the safety valve if the drip pan elbow figure 6.

The drip pan elbow changes the outlet of the safety device from horizontal to vertical. Model 299 drip pan elbow the illustration shows a discharge elbow and drip pan unit attached to a safety valve with female npt outlet. The drip pan elbow is designed to collect and remove condensate from steam systems. This could place undue stress and weight on the valve body and change the set pressure of the safety valve.

The drip pan elbow isolates the safety valve. 6 and 8 elbows have integral 125 ansi b16 1 flange. Safety valve installation on heat transfer is not directly connected to the safety valve. Flanged valves 4 and smaller will require.

This would place undue stress and weight on the valve body. Installation when a steam safety valve relieves steam is blown into the. The drip pan elbow changes the outlet of the safety device from horizontal to vertical. All safety valves should use a purchased or custom made drip pan elbow on the safety valve outlet for the following reasons.

O never attach the vent discharge piping directly to the safety valve. Never attach the vent discharge piping directly to the safety valve. Pipe as shown on the drawings. The pan is used to collect condensate in the steam riser and the drain is used to pipe away the condensate to a safe area.

The length of discharge piping must be minimized. Installation the drip pan elbow is to be connected to the discharge connection of the safe ty relief valve by a short pipe nipple.