Drip Pan Elbow Installation

The drip pan elbow isolates the safety valve.

Drip pan elbow installation.

Important length of discharge piping must be kept to a minimum. 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. Drip pan elbow installation has its own guidelines. Dimensions pressure drop pounds per square inch multipliers to be used 6 and 8 elbows have integral 125 lb.

The length of discharge piping must be minimized. 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. 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 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 drip pan elbow changes the outlet of the safety device from horizontal to vertical. The drip pan elbow changes the outlet of the safety device from horizontal to vertical. 6 and 8 elbows have integral 125 ansi b16 1 flange. Pressure drop is difference between inlet pressure and reduced pressure.

Installation for power boilers and unfiredpressure vessel service. The drip pan elbow is designed to collect and remove condensate from steam systems. O the safety valve vent pipe may not touch the drip pan elbow o the. Installation when a steam safety valve relieves steam is blown into the.

Installation of the drip pan elbow has its own guidelines. It is typically used in conjunction with steam safety valves. 6 and 8 inch elbows have integral 125 ansi b16 1 flange. 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.

Cast iron drip pan elbows for steam service. Flanged valves 4 and smaller will require. 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.

Drip pan elbow to the safety valve if the drip pan elbow figure 6. All safety valves should use a purchased or custom made drip pan elbow on the safety valve outlet for the following reasons. This would place undue stress and weight on the valve body. Drip pan elbows must be provided with a suitable unrestricted self draining source.

O never attach the vent discharge piping directly to the safety valve. Spirax sarco a leader in steam solutions manufacturers drip pan elbows. Never attach the vent discharge piping directly to the safety valve. This could place undue stress and weight on the valve body and change the set pressure of the safety valve.

Installation the drip pan elbow is to be connected to the discharge connection of the safe ty relief valve by a short pipe nipple. Pipe as shown on the drawings.