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specifications of our products at any time without notice.
HIGH PERFORMANCE BUTTERFLY VALVE
FIGURE HPA
14
8.9 PROCEDURE FOR SEAT REPLACEMENT
8.9.1 Remove the retainer ring as per procedure
described in section 8.5.
8.9.2 Remove retainer ring gasket in fire safe seat
design. This is not applicable for soft seat.
8.9.3 Remove fire safe seat/soft seat.
8.9.4 Remove body gasket (applicable for fire
safe design).
8.9.5 If the seat is tight, move the disc to open position
and if still tight, gently drive the seat out of the
body using smooth blunt instrument.
8.9.6 Ensure that all components are clean. Position the
disc in closed position.
8.9.7 Refit components by using steps in section 8.7.
CAUTION:
•
Improper handling may cause disc and seat damage or deformation of stem, which will affect sealing and
operational torque of the valve.
•
Faulty installation may lead to valve and/or pipeline damage.
•
Ensure that the soft parts are changed once they are removed from the valve.
•
Avoid contact with the valve closure element during cycling.
CAUTION:
All equipment must be fitted only with
manufacturer’s original spare parts. When
ordering for spare parts, always convey the
following information: size of valve, sr. no. and
mfg. date which is available in the nameplate tag.
9. RECOMMENDED SPARE PARTS
9.1 Before the start of repair operations, we recommend that
one set of spares as given in Table 2 should be available.
9.2 For normal operation (2 years), we recommend one
set of spares to be available at site.
Item No.
Part Description
1
Seat (3)
2
Bearing (7)
3
Gland packing (11)
4
Stem Retainer (3)
5
Bottom Gasket (18)
6
Wedge Pin (8)
7
Belleville Spring (16)
8
Seat Gasket (22)
Table 2:
Recommended spare parts list
10. DISPOSAL ACTION
10.1
DISPOSAL INSTRUCTIONS
10.1.1 Metallic components of product are to be
cleaned and recycled.
10.1.2 Foam, Rubber, Elastomer, Polymers and
Plastics components, along with packing
materials are to be scrapped according to
regional regulations in which they are to
be disposed.
10.1.3 Wooden boxes may be reused based on
the condition of the boxes, or they may
be recycled.
11. CE INSTRUCTIONS
11.1 Each valve has a stainless-steel name plate
fixed to the body.
11.2 The nameplate is marked with details of figure
number, along with various other details
such as the materials of construction, limiting
temperatures and pressure rating.