EMERSON Guide Spring Operated Safety Valves O&SI, Birkett-EN

Bailey Spring Operated Safety Val Ve S Operating and Safety in Structi On S (ped)

Before installation these instructions must be read fully and understood

General • Safety valves are intended to open and close within a narrow pressure range. Valve the intent of these instructions is to acquaint installations require accurate design both the user with the storage, installation and as to inlet and discharge piping. refer to operation of this product. international, national and industry standards please read these instructions carefully before for guidelines.

installation.

Safety precaution S

this safety valve should only be used in accordance with the applicable operating • When the safety valve is under pressure never instructions and within the application place any part of your body near the outlet of specifications of the purchase order. the valve. this valve has been tested and adjusted at • The valve outlet and any separate drains the factory. Contact the factory or an authorized should be piped or vented to a safe location. representative before making any changes to • Always wear proper safety gear to protect the settings. hands, head, eyes, ears, etc. any time you are

near pressurized valves. in Stallation • Never attempt to remove the safety valve from a system that is pressurized. • Many valves are damaged when first placed • Never make adjustments to or perform in service because of failure to clean maintenance on the safety valve while in the connection properly when installed. service unless the valve is isolated from Before installation, flange faces or threaded the system pressure. if not isolated properly connections on both the valve inlet and from the system pressure, the valve may the vessel and/or line on which the valve is open inadvertently, resulting in serious injury. mounted must be cleaned thoroughly of all • Remove the safety valve prior to performing dirt and foreign material. any pressure testing of the system. it is Because foreign materials that pass into and recommended that valves with welded inlets through safety valves can damage the valve, be tested hydrostatically using hydrostatic the systems on which the valves are tested test plugs and caps supplied with the valves. and finally installed must also be inspected • The safety of lives and property often depends and cleaned. new systems in particular are on the proper operation of the safety valve. prone to containing foreign objects that get the valve must be maintained according to trapped inadvertently during construction appropriate instructions and must be tested and will destroy the seating surface when the and reconditioned periodically to ensure valve opens. the system should be cleaned correct function. thoroughly before the safety valve is installed. • For further information including adjustment, • The gaskets used must be dimensionally maintenance, cleaning, lapping and correct for the specific flanges. the inside detail illustrations, obtain the appropriate diameters must clear the safety valve inlet installation, Operation and Maintenance and outlet openings fully so that the gasket instructions. these may be requested from does not restrict flow. the factory or are available on our website.

• For flanged valves, draw down all connection studs or bolts evenly to avoid possible distortion of the valve body. for threaded valves, do not apply a wrench to the valve body. Use the flats provided on the inlet bushing.

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