Flo-Tite MPF155 Handbuch für Installation, Betrieb und Wartung - Seite 4

Blättern Sie online oder laden Sie pdf Handbuch für Installation, Betrieb und Wartung für Kontrolleinheit Flo-Tite MPF155 herunter. Flo-Tite MPF155 5 Seiten. Flo-tite bottom entry series, flanged end ball valves

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Install one new seat and seal in the body cavity with the spherical curvature facing the ball. Replace the stem
in the reverse order from above based on valve size, including reattaching the handle. Turn the handle to the
closed position. This will align the stem tang and the ball slot. Slide the ball into position. Turn the handle
to the open position to help hold the ball in place. Install the second seal and seat into the body end.
Place the body seal gasket into the shoulder counter-bore at the flange in the valve body. Using the
match marks to realign the body and body end, carefully place the cap end back into the body. Install the cap
end nuts and tighten in a star pattern to the torque values specified below.
Note:
Make sure ball is in closed position before tightening up the end connections.
WARNING- extreme care must be exercised during tightening of the body end nuts to make sure that
complete engagement of studs with the body flange is maintained. There should be at least one stud
thread exposed on each side.
Cycle the valve slowly, with a gentle back and forth motion to build gradually to a full quarter turn. By
cycling slowly, the new seat lips will conform to the seal shape against the ball. An initial fast turning
motion, at this point, may cut the seats before they have a chance to form the proper seal. When possible
and practical, test the valve prior to reinstalling into the pipeline.
Reinstallation-
Carefully inspect the faces of both the valve flanges and the mating flanges to ensure they are clean and
undamaged. Place the valve in the preferred position and support it from moving. Install a sealing gasket
between each pair of flanges and reinsert the bolting and hand tighten. Secure the bolting to the
recommended torque values in a star pattern to ensure that the gasket is compressed evenly around the entire
circumference.
Repair Kits –
Repair kits typically consist of replaceable seats,
body seals and packing seals. Refer to the unit
nameplate, as shown below, to confirm what
materials are currently installed. Contact your
local Flo-Tite Representative to order and
receive the kits prior to any maintenance work.
Valve Markings- Casted into valve bodies include the following; Flo-Tite Name, Model Numbers, Body
Material, Valve Size, & Class Pressure Rating
All Flo-Tite valves have metal nameplates spot welded to the valve body.
Standard Trim Soft Parts
ID-Codes
Stem seal material
Flo-Tite Name
Flo-Tite Name
Valve Model
Flo-Tite's marking system follows MSS SP-25-1998
Seat material
VALVE - SOFT PARTS
SEAT
STEM SEALS
TFM
F
TFM
CTFM
Y
CTFM
PTFE
T
RTFM
X
RPTFE
R
PTFE
50/50
S
RPTFE
UHMWPE
U
50/50
PEEK
P
UHMWPE
U
Cavity Filled
C
PEEK
Metal
M
Graphite
G
Kel-F
K
Valve Side A
Body seal material
Valve Side B
ANSI Class
Body Material
IOM-F150F300-TB58 2018
BODY SEAL
O-RINGS
F
TFM
F
VITON
Y
CTFM
Y
EPDM
PTFE
T
PTFE
T
RPTFE
R
BUNA
R
50/50
S
NONE
S
UHMWPE
U
PEEK
P
P
Graphite
G
Kel-F
K
Viton O-ring
Page 4
V
E
T
B
N