Alfa Laval Alfa Laval Air Actuated Kettle Valve 762-31M-20L-X-316L 762-31M-20L-X-316L

- Bushings guide the actuator stem while packings provide sealing around the stem

- The bushing and packing should both be replaced if one or the other fails. Even if only one end fails both ends of the actuator should be serviced

- Disconnect and remove actuator completely from valve before proceeding with the steps that follow valve dissassembly

- Replace all worn or damaged components as required

- Spray stem and o- ring with Sanitary Lubricant

- Make sure all valve bodies are mated properly before securing with clamps

- Tighten all clamps securely to assure proper alignment

- When disassembling and assembling valve, bench area should be clean to prevent marking and nicking of seats;

Warning: Ensure the valve stem is secured before starting the procedure

Is the Nylon Locking Pin located in the middle of the stem thread?

Is the valve stem secure and free from vibrations?

After every disassembly, the nylon locking pin must be replaced

Was the old nylon pin punched out with an 1/8 inch or smaller diameter punch?

Was a new nylon locking pin inserted?

Sign off on the actuator stem replacement

- Inspect Valve Body Seat(s) for nicks and scratches and other signs of excessive wear. Leakage past the seat(s) may result from these types of irregularities

- Inspect Valve Stem & Seat(s) rubber or PTFE seat(s) for signs of cracking, tearing, checking, or excessive wear

- Inspect stem finish for galling, nicks, or scratches. Leakage may result from these irregularities

- Inspect Split Bushing for signs of cracks, nicks, scratches or excessive wear on inside diameter. A worn bushing will not properly align valve stem

- Inspect O-ring(s) for cuts, abrasions, flat spots, or other damage that would cause leakage or ineffective cleaning;

Oil injected into the unthreaded thru hole in each end of the actuator

Actuator rolled on a flat surface for uniform coverage of lubricant

Sign off on the actuator lubrication