Spirax Sarco Valve BSA2T PN16 DN150-DN200

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

Observe the data in Section 1 - 'Safety information'

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

Ensure the valve is connected in the pipeline

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

Check if the body gasket (10b) is visible

Safety Information Acknowledgment

Handle body/bonnet collar gaskets (10a and 10b) with care

Remove the handwheel by unscrewing the main handwheel nut in a clockwise direction

Use a suitable spanner to unscrew the handwheel from the bonnet bush

Refit the handwheel by reversing the removal process

Apply Loctite 638 to the threads of the handwheel boss

Tighten the handwheel boss to 50 N m (36 lbf ft)

Tighten the handwheel nut to 40 N m (29 lbf ft) in an anticlockwise direction

Review Section 1 - 'Safety information' before starting any maintenance

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

Fitting New Stem/Bellows Assembly

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

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

Apply a small amount of lubricating compound to the end of the stem pin

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

Carefully slide the stem up through the bonnet

Review Section 1 - 'Safety information' before starting maintenance

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

Align the solid stem pin with the slot inside the bonnet

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