ALFA LAVAL UNIQUE SSV STANDARD VALVE INSTRUCTION MANUAL—REV 3/19
5 Maintenance
Study the instructions carefully. The items refer to the parts list and service kits section. Handle scrap correctly.
NC = Normally closed.
NO = Normally open.
A/A = Air/air activated.
5.3 Plug seat ring replacement
There are two plug seal ring options:
A. Plug seal TR2
B. Plug seal elastomer
A
A P
Plluugg sseeaall TTR
R22
1. Place the plug element on a firm support.
2. Using a utility knife, partially AND CAREFULLY cut through the upper
ring portion of the TR2 plug avoiding contact with stainless steel stem.
3. Force apart both cut ends of the plug for removal from stem.
4. TR2 plugs are installed by applying uniform pressure on all sides.
(Pressure can be applied by using the seat assembly tool.)
5. Using a piece of metal and a rubber mallet, place a precise tab to
make the TR2 plug snap on to the stem. Reverse the tool and tab
again to secure proper fit.
6. Examine seat assembly to be sure the TR2 plug is properly mounted,
holding the seat assembly in one hand - rotate the TR2 plug.
(For proper CIP cleaning the TR2 plug should turn freely on the stem.)
Use the mounting tool for TR2 - see spare part.
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