Flomatic Flo-Flex 745 Manual - Halaman 4

Jelajahi secara online atau unduh pdf Manual untuk Unit Kontrol Flomatic Flo-Flex 745. Flomatic Flo-Flex 745 7 halaman. Swing check valve

Halaman Cetak
 
INSTALLATION 
Correct installation of the Flomatic
operation. It may be installed in either horizontal or vertical flow-up
applications. Horizontal installation, with the access port facing up is
recommended for waste water application as it will prevent material
in the fluid to collect on the valve disc. In all installations, the flow
arrow cast in the valve and cover must be pointed in the direction of
flow.
Flanged valves should only be mated with flat-faced pipe flanges
equipped with full-face resilient gaskets. The valve and adjacent
piping must be supported and aligned to prevent cantilevered stress
on the valve. Once the flange bolts or studs are lubricated and
inserted around the flange, tighten them uniformly hand tight. The
tightening of the bolts should then be done in graduated steps using
the crossover tightening method. Recommended lubricated torque
values for use with resilient gaskets (75 durometer) are given in Table 1. If leakage occurs, allow gaskets to absorb fluid
and check torque and leakage after 24 hours. Do not exceed bolt rating or the flange gasket can get damaged and extrude.

TROUBLESHOOTING

Below are some potential problems with solutions to assist you in troubleshooting the valve assembly in a safe manner.
Problem
Valve disc leaks-
1
back when closed
2
Leakage at bottom
Back-flush device
Leakage at Cover or
3
Flanges
Valve does not fully
4
open:
Also, visit Flomatic
web page
®

MAINTENANCE

The Flomatic
Flo-Flex® Swing Check Valve requires no scheduled lubrication or maintenance. For service or inspection,
®
the valves internal parts can be accessed and serviced without removal from the line.
WARNING: The line must be drained and de-pressurized before removing the cover or the bottom plug if
not this may cause bodily harm.
VALVE INSPECTION: DISASSEMBLY & RE-ASSEMBLY
The valves internal parts can be disassembled and serviced without removing it from the pipeline. All service and repair
work performed on the valve shall be performed by a skilled mechanic with proper tools and a power hoist for larger
valves. It is recommended that when disassemble the valve to inspect the rubber valve disc for wear or the valve seat for
deposits.
DISASSEMBLY
1.
Relieve pressure and drain the pipeline. Refer to
Figure 2 on page 2. Remove the cover bolts (5)
on the top cover.
2.
Pry cover (2) loose and lift off valve body. 12" and
larger valves have tapped holes in cover for lifting
eyes.
3.
Remove disc (3) and inspect for cracks, tears or
damage in rubber sealing surface.
4.
Clean and inspect parts. Replace worn parts as
necessary and lubricate parts with FDA/NSF
grease such as "Super Lube".
Flo-Flex® is important for proper
®
Inspect valve seat area for foreign material. Also, inspect disc for damage and replace. Inspect metal
seating surface and clean if necessary
Remove line pressure and exercise Back-flush device. If leak persists, replace seals in Back-flush
device; see the Back-flush device "Seal Replacement Procedure" on page 4.
Tighten bolts, replace cover seal.
Check for obstruction in valve seat area and/or pipeline; see Disassembly procedure on page 4.
Operating pressure may be less than cracking pressure. If less than 0.5 psig, review application with
factory.
www.flomatic.com
for technical product references and parts lists or call customer service 1-800-833-2040.
Flomatic Corp, 15 Pruyn's Island, Glens Falls, New York 12801
Phone: 518-761-9797
Dimensions for 150# Class Valves
Valve
Size
(inches)
2
2-1/2
3
4
6
8
10
12
14
16
18
20
24
Table 1 Bolt Torque Chart
Solution
RE-ASSEMBLY
All parts must be cleaned. Gasket surfaces should be cleaned
with a stiff wire brush in the direction of the serrations or machine
marks. Worn parts, gaskets and seals should be replaced during
reassembly.
1.
Lay disc (3) over seat with beaded seating surface
directed down.
2.
Lay cover gasket (4) and cover (2) over bolt holes and
disc hinge.
3.
Insert lubricated bolts (5) noting that the bolts in the
hinge area are longer than the other cover bolts.
4.
Cover bolts should be tightened to the specifications
shown in Table 2 (next page) during re-assembly.
Fax: 518-761-9798
www.flomatic.com
Flange
Number
Bolt
Outside
Diameter
of Bolt
Diameter
Holes
(inches)
(inches)
6
4
5/8"
7
4
5/8"
7-1/2
4
5/8"
9
8
5/8"
11
8
3/4"
13-1/2
8
3/4"
16
12
7/8"
19
12
7/8"
21
12
1"
23-1/2
16
1"
25
16
1-1/8"
27-1/2
20
1-1/8"
32
20
1-1/4"
745PI-BF-LS-ASC Rev. B
Max Torque
150#
300#
(ft.-lbs.)
(ft.-lbs.)
90
90
90
150
90
150
90
150
150
150
150
240
240
368
240
533
368
533
368
750
533
750
533
750
750
1200
October 12, 2018