Drip Pan Elbow Installation

The drip pan elbow isolates the safety valve.

Drip pan elbow installation.

For safety valves with flanged outlets 2 to 4 use companion flange short nipple and drip pan elbow all same size as valve outlet. All safety valves should use a purchased or custom made drip pan elbow on the safety valve outlet for the following reasons. O the safety valve vent pipe may not touch the drip pan elbow o the. The drip pan elbow changes the outlet of the safety device from horizontal to vertical.

Pipe as shown on the drawings. Safety valve installation on heat transfer is not directly connected to the safety valve. The drip pan elbow changes the outlet of the safety device from horizontal to vertical. 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.

Dimensions pressure drop pounds per square inch multipliers to be used 6 and 8 elbows have integral 125 lb. 6 and 8 inch elbows have integral 125 ansi b16 1 flange. The length of discharge piping must be minimized. Drip pan elbow to the safety valve if the drip pan elbow figure 6.

Important length of discharge piping must be kept to a minimum. 6 and 8 elbows have integral 125 ansi b16 1 flange. O never attach the vent discharge piping directly to the safety valve. Installation of the drip pan elbow has its own guidelines.

This would place undue stress and weight on the valve body. Installation when a steam safety valve relieves steam is blown into the. This could place undue stress and weight on the valve body and change the set pressure of the safety valve. The drip pan elbow is designed to collect and remove condensate from steam systems.

It is typically used in conjunction with steam safety valves. Drip pan elbows must be provided with a suitable unrestricted self draining source. Elbow and drip pan unit attached to a safety valve with female npt outlet. Model 299 drip pan elbow the illustration shows a discharge elbow and drip pan unit attached to a safety valve with female npt outlet.

Flanged valves 4 and smaller will require. 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. Use table as shown drain to waste. Cast iron drip pan elbows for steam service.

Pressure drop is difference between inlet pressure and reduced pressure. 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. Never attach the vent discharge piping directly to the safety valve. Drip pan elbow installation has its own guidelines.

Installation for power boilers and unfiredpressure vessel service. For flanged outlets companion flanges drip pan elbow and short nipple must be the same size as valve outlet or larger.