Spirax Sarco Valve BSA3 ASME300 DN15-DN25

Review Section 1 - 'Safety information' before starting maintenance

Handle and dispose of body/bonnet collar gaskets (10a and 10b) carefully to avoid injury

Remove the old stem pin and replace the disc (4)

Attach the new disc with the new stem pin (supplied)

If applicable, prise the crimped skirt away from the retaining nut and unscrew

Remove and save the collets and retaining nut for reuse

Lightly grease collets and threads with lubricating compound such as Molybdenum Sulphide

Review Section 1 - 'Safety information'

Handle and dispose of body/bonnet collar gaskets (10a and 10b) carefully to avoid injury

Remove the valve bonnet (2) from the body (1) by unscrewing bonnet studs/nuts (9)

Replace the visible body gasket (10b)

Ensure the gasket face in the body (1) is clean before fitting a replacement

Second Gasket Replacement Preparation

Review Section 1 - 'Safety information'

Handle and dispose of body/bonnet collar gaskets (10a and 10b) carefully to avoid injury

Apply Gulf Sovereign LC grease to the end of the stem pin

Ensure the stem pin is aligned with the slot inside the bonnet

Fit a bellows collar gasket (10a) between the bellows support collar and valve bonnet (2)

Ensure the bellows collar gasket (10a) is accurately located

Pre-assembly Safety Information

Review Section 1 - 'Safety information'

Handle and dispose of body/bonnet collar gaskets (10a and 10b) carefully

Remove all old stem packing material from the bonnet cavity

Check that only one stem packing ring is used from the spares kit

Fit a bellows collar gasket between the collar and the valve bonnet

Observe the data in Section 1 - 'Safety information' before actioning any maintenance programme

Body/Bonnet Collar Gaskets Warning

Handle and dispose of body/bonnet collar gaskets (10a and 10b) carefully to avoid physical injury from the thin stainless steel support ring

Remove circlip using circlip pliers