Emerson Process Management 51000 Installation, For Air-to-Close This is not required

Instruction

51.LF:IM	Baumann™ 51000 Series Instructions
April 2007

INSTALLATION

1.Before installing the valve in the pipeline, thoroughly clean the line of all dirt, welding chips, scale, oil or grease, and other foreign materials.

2.Install valve so the controlled fluid will flow through the valve body in the direction indicated by the arrow.

3.A three-valve bypass permits removal of the control valve from the line without shutting down the system.

4.In case of a heat-insulated installation, insulate the valve body only, not the bonnet.

ACTUATOR REMOVAL (Refer to Figures 1, 2, & 6)

1.For air to open actuators, lift actuator travel with air to lessen tension on the upper clamp nut (10).

NOTE

For Air-to-Close,

This is NOT required.

2.Gently tap upper clamp nut (10). With slight downward pressure on top of the actuator, unscrew the upper clamp nut (10) completely.

3.Type 16 actuator assembly must be unscrewed from stem adapter (26).

PLUG AND PACKING REPLACEMENT (Refer to Figures 1 and 2)

VALVE DISASSEMBLY (Refer to Figures 1 and 2)

NOTE

Actuator must be removed from the valve body before valve body disassembly.

CAUTION

The valve packing box may contain process fluids that are pressurized, even when the valve has been removed from the pipeline. Process fluids may spray out under pressure when removing the packing hardware or packing rings, or when loosening the packing box pipe plug.

1.Remove bonnet hex nuts (7) and lift bonnet (6) off valve body (1), which may include packing (9) and plug assembly (4). (For alloy bodies, lift bonnet flange (34) off from bonnet (6) and then lift bonnet

(6)off valve body (1).)

2.Remove bonnet gasket (5) and replace.

3.The cage subassembly (3) can be removed by unscrewing with a flat screwdriver, using the outer screw slot, and lifting out of valve body

(1).The cage subassembly should be inspected and cleaned with water or an approved solvent. For valves with rated Cv's >/= 1.0, remove and

inspect plug guide (33) for wear. Replace if

CAUTION

When adjusting the valve stem do not grip the stem directly with pliers or a wrench. This will damage the surface of the stem, and cause damage to the packing in the valve.

1.For valves supplied with type 16 actuators, remove travel indicator disc (58). With hex jam nuts (27) still tight, loosen stem adapter (26) from stem adapter nut (31), and unthread stem adapter (26) from plug stem (4).

For valves with rated Cv’s less than 1.0, unscrew packing nut (11) and gently pull plug (4) out through top of bonnet (6).

For valves with rated Cv’s greater than or equal to 1.0, follow the VALVE DISASSEMBLY instructions to first remove the bonnet (6) before removing the plug (4).

2.Inspect or replace packing (9) and stem guide

(8).

3.Inspect valve plug (4) for wear or particle accumulation.

necessary. Replacement of the entire assembly will be necessary if excessive leakage or wear has occurred in service.

NOTE

The seat cage gasket (2) must be replaced when the cage subassembly (3) has been removed. The seat cage will appear oblong, this is to prevent loosening of the soft seat.

VALVE REASSEMBLY

1.Place cage gasket (2) and cage subassembly (3) in body (1).

2.Tighten the cage (3) hand tight plus 1/8 of a turn. (For valves with rated Cv’s greater than or equal to 1.0, insert plug guide (33).)

3.Seat plug (4) in body (1).

4.Place bonnet gasket (5) in body (1). Look at bonnet

(6) and body (1) for correct bonnet orientation.

5.Place bonnet (6) on valve body (1) and secure with hex nuts (7). For alloy bodies, place bonnet (6) on valve body (1), then place bonnet flange (34) over

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