Drip Pan Elbow Installation

O never attach the vent discharge piping directly to the safety valve.

Drip pan elbow installation.

Model 299 drip pan elbow the illustration shows a 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. 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 length of discharge piping must be minimized.

The drip pan elbow changes the outlet of the safety device from horizontal to vertical. Installation of the drip pan elbow has its own guidelines. All safety valves should use a purchased or custom made drip pan elbow on the safety valve outlet for the following reasons. Safety valve installation on heat transfer is not directly connected to the safety valve.

Cast iron drip pan elbows for steam service. 6 and 8 elbows have integral 125 ansi b16 1 flange. Important length of discharge piping must be kept to a minimum. The drip pan elbow is designed to collect and remove condensate from steam systems.

Use table as shown drain to waste. For safety valves with flanged outlets 2 to 4 use companion flange short nipple and drip pan elbow all same size as valve outlet. It is typically used in conjunction with steam safety valves. Spirax sarco a leader in steam solutions manufacturers drip pan elbows.

Dimensions pressure drop pounds per square inch multipliers to be used 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. For flanged outlets companion flanges drip pan elbow and short nipple must be the same size as valve outlet or larger. Never attach the vent discharge piping directly to the safety valve.

Drip pan elbows must be provided with a suitable unrestricted self draining source. O the safety valve vent pipe may not touch the drip pan elbow o the. 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. This would place undue stress and weight on the valve body.

The drip pan elbow isolates the safety valve. Flanged valves 4 and smaller will require. Drip pan elbow to the safety valve if the drip pan elbow figure 6. Drip pan elbow installation has its own guidelines.

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. Pipe as shown on the drawings. Installation for power boilers and unfiredpressure vessel service. Installation when a steam safety valve relieves steam is blown into the.

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.