Installation, Operation,
and Maintenance Manual
Lug & Wafer Style
Butterfly Valves
BFV-A/BFV-C/BFV-D QVA
Quadrant Valve & Actuator Engineering Specification
Number: IOM- 8
Date: 12/26/2002
Title: BFV-IOM, for:
BFV-A, BFV-C, and BFV-D
I. Initial Inspection
A. Remove valve from packaging.
B. Inspect body lugs, stem area and the protruding rubber seat surface on
each side of butterfly valve for any damage caused in shipment or
handling.
C. Confirm Valve Size is correct for installation.
D. Confirm that Disc and Seat materials are correct for application.
NOTE: EPDM seat material valves have a RED nameplate- these are
NOT to be used on ANY PETROLEUM APPLICATION, and are not to be
lubricated with any PETROLEUM-BASED GREASE.
II. Installation
A. NO FLANGE GASKETS ARE TO BE USED IN THIS INSTALLATION!
B. Confirm that flanges to be used on each side of Wafer-Style and on either
side of Lug-Style butterfly valves have an Inside Diameter at the butterfly
valve seat contact surface that is larger than the “Chord” diameter of disc
in the open position- see dimension chart for Quadrant butterfly valves on
Literature
C. Confirm that the Inside Diameter of adjoining flanges is at least 1.0”
smaller than Outside Diameter of seat cartridge.
D. Confirm that flange sealing surfaces are smooth and undamaged.
E. Place Disc in the partially open position, but keep Disc “edges” inside of
the butterfly valve end-to-end width.
F. Apply a small amount of COMPATIBLE grease on seat surfaces that will
contact mating flange seating surfaces.
G. On existing piping systems, expand the opening between flanges to allow
the butterfly valve to “slide” between flange mating surfaces.
NOTE: Failure to allow adequate installation space can result in damage to
butterfly valve’s seat surface, causing leakage at flange joint.
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H. On Wafer-style butterfly valves, the bolts that connect the two adjoining
flanges will also “center” the butterfly valve body with adjoining flanges.
Check to insure that wafer valve is “centered” with adjoining flanges.
I. After successful installation of butterfly valve between flanges on existing
applications, or assembly of piping & flanges to butterfly valve on new
installations, HAND-TIGHTEN flange bolts and nuts.
J. Torque flange bolts using a series of “Alternating Across Valve” torque
sequences, applying increasing torque after each full torque sequence.
K. At the conclusion of flange bolt tightening, both flanges will be in metal-tometal contact with each side of butterfly valve body.
L. Caution is required to limit bolt torque to the minimum required to establish
metal-to-metal contact between flanges and butterfly valve body- any
additional torque can damage butterfly valve lugs.
M. After installation, operate the handle or gear operator from partially open
position to full open position, then to closed position. NOTE: any
interference while operating valve from partially open to full open position
indicates disc-to-flange or disc-to-pipe interference- disassemble and
correct.
III. Operation:
A. After Installation, confirm handle has adequate clearance by rotating 90
degrees from open to closed position and back to open.
B. Although Quadrant Butterfly Valves are equipped with 10-Position handles
(2”-12” sizes) and can be used in “throttling” applications, “throttling” on
fluids with high solid content or dry fluids will severely reduce sealing life.
C. All Quadrant Butterfly Valves are equipped with a lubrication fitting in the
upper “neck” area of butterfly valve body. This fitting allows grease to be
injected between stem bore and valve stem to reduce or eliminate
corrosion caused by water entering this area. We recommend that this
fitting be lubricated upon installation, especially on outdoor and offshore
applications.
IV. Initial Pressurization of System
A. Upon initial pressurization of piping system, check all connections for
leaks and correct if required.
V. Maintenance
A. Quadrant Butterfly Valves require no maintenance.
B. Upper Stem bore can be re-lubricated if desired.
VI. Repair
A. Quadrant’s BFV-D Series is not field reparable.
B. Quadrant’s BFV-A and BFV-C Series butterfly valves are field reparable.
C. Please contact factory for BFV-A and BFV-C Field Repair Instructions.
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About ASC Engineered Solutions
ASC Engineered Solutions is defined by quality—in its products, services and support.
With more than 1,400 employees, the company’s portfolio of precision-engineered
piping support, valves and connections provides products to more than 4,000
customers across industries, such as mechanical, industrial, fire protection, oil and
gas, and commercial and residential construction. Its portfolio of leading brands
includes ABZ Valve®, AFCON®, Anvil®, Anvil EPS, Anvil Services, Basic-PSA, Beck®,
Catawissa, Cooplet®, FlexHead®, FPPI®, Gruvlok®, J.B. Smith, Merit®, North Alabama
Pipe, Quadrant®, SCI®, Sharpe®, SlideLOK®, SPF® and SprinkFLEX®. With headquarters
in Commerce, CA, and Exeter, NH, ASC also has ISO 9001:2015 certified production
facilities in PA, TN, IL, TX, AL, LA, KS, and RI.
asc-es.com
FC-IOM-BFV-A QVA-v01 20210618
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