Val-Matic 30 and Larger Butterfly Valve User Manual

Manual No.

BFV- OM2-3

®

Val-Matic

30" and Larger Butterfly Valve

Operation, Maintenance and

Installation Manual

INTRODUCTION ....................................... 1

RECEIVING AND STORAGE .................... 1

DESCRIPTION OF OPERATION .............. 1

VALVE CONSTRUCTION ......................... 2

INSTALLATION ......................................... 3

MAINTENANCE ......................................... 6

TROUBLESHOOTING ............................... 9

DISASSEMBLY ....................................... 10

REASSEMBLY ........................................ 10

PARTS & SERVICE ................................. 12

WARRANTY ............................................ 12

VALVE AND MANUFACTURING CORP.

905 Riverside Dr. ● Elmhurst, IL 60126
Phone [phone] ● Fax [phone]
www.valmatic.com

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VAL-MATIC'S 30" AND LARGER BUTTERFLY VALVE

OPERATION, MAINTENANCE AND INSTALLATION

INTRODUCTION

The Series 2000 Butterfly Valve has been designed to
give years of trouble-free operation. This manual will
provide you with the information to properly install and
maintain the valve to ensure a long service life. The
valve is a resilient seated, quarter-turn valve capable of
handling air, water, or other clean fluids. For fluids with
suspended solids, a Model 5800R Eccentric Plug
Valve should be used. The Size, Cold Working
Pressure (CWP), and Model No. are stamped on the
nameplate for reference.

CAUTION: Do not use valve for line testing

at pressures higher than
nameplate rating or leakage and
dama

The "Cold Working Pressure" is the non-shock
pressure rating of the valve at 150
intended for flow in either direction. The “Seat End” is
marked on the nameplate so that access to the seat
can be assured.

RECEIVING AND STORAGE

Inspect valves upon receipt for damage in shipment.
Unload all valves carefully to the ground without
dropping. Do not lift valves with slings or chains
around the actuator or through the seat area. Extra
care must be taken when handling electric motor and
cylinder actuated valves.

Valves should remain crated, clean and dry until
installed to prevent weather related damage. For long
term storage greater than six months, indoor storage is
recommended. The valve flange covers must remain
in place, the valve must remain slightly open (3-5
degrees), and the rubber surfaces of the disc should
be coated with a thin film of FDA approved grease
such as Dow Corning # 7. Do not expose the resilient
seat to sunlight or ozone for any extended period.
Electric actuators must be powered if stored outdoors
or in cool areas so that the internal heaters will prevent
condensation in the control unit.

e to valve may occur.

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F. The valve is

DESCRIPTION OF OPERATION

As shown in Figure 1, the valve consists of a body, a
disc, and a shaft that rotates in body bearings. The
resilient seat provides drop-tight shutoff.

FIGURE 1. BUTTERFLY VALVE WITH ACTUATOR

The disc is rigidly attached to the shaft with taper pins.
The actuator rotates the valve shaft and disc through
90 degrees of operation. The disc can rotate through
the seat, but is factory set to stop in the center of the
seat to provide tight shut off. Additional torque on the
actuator when against the closed stop of the actuator
will not provide tighter shut off. The valve seat is easily
adjustable or replaceable should wear or damage
occur over time.

The valve is typically operated with a manually
operated gear actuator. The gear actuator as shown in
Figure 1 requires multi-turn input on a 2" square nut,
handwheel, or chainwheel. The valve can also be
automated with power actuators such as an electric
motor or hydraulic cylinder.

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VALVE CONSTRUCTION

The standard Series 2000 Butterfly Valve is
constructed of rugged cast iron with a stainless steel
shaft and resilient disc edge. See the specific
Materials List submitted for the order if other than
standard cast iron construction. The details of
construction are illustrated in Figure 2.

The body (1) is available with flanged or mechanical
joint ends for connection to the pipeline. The body is
equipped with a stainless steel seat (2). The 1/4 turn
disc (3) is guided by a stainless steel shaft (4) which
rotates in non-metallic bearings (5) fixed in the body.
Leak-tight closure is made when the resilient seat (6) is
rotated into the stainless steel seat on the "SEAT END"
of the body.

FIGURE 2. STANDARD BUTTERFLY VALVE CONSTRUCTION

ITEM DESCRIPTION MATERIAL

1 Body Gray or Ductile Iron
2 Body Seat Stainless Steel
3 Disc Ductile Iron
4 Shaft Stainless Steel
5 Sleeve Bearing* Teflon/Fiberglass
6 Resilient Seat* Buna-N
7 Seat Retaining Ring Stainless Steel
8 Ret. Ring Screws* Stainless Steel
9 Taper Pin Stainless Steel
10 Taper Pin O-Ring* Buna-N
11 Taper Pin Nut Stainless Steel
12 Taper Pin Washer Stainless Steel
13 Packing* Buna-N
14 Key Carbon Steel
15 Thrust Bearing Cap Ductile Iron
16 Cap Screws Carbon Steel, Plated
17 Thrust Brg. Stud Bronze
18 Thrust Plate Cast Iron
19 Thrust Plate Bolt Carbon Steel. Plated
20 Thrust Plate Gasket Non-Asbestos Fiber
21 Lock Cap Cast Iron
22 Lock Cap Bolts Carbon Steel, Plated
23 Lock Cap Gasket Non-Asbestos Fiber
24 Body O-Ring Buna-N

*Recommended Spare Part

TABLE 1. STANDARD VALVE PARTS LIST

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INSTALLATION

The Val-Matic butterfly Valve is Bi-Directional,
however, when deciding the valve’s installation
orientations, the engineer should consider the seat
position in regards to flow and access. The following
guidelines are intended to assist the engineer. The

“SEAT END” and “SUGGESTED FLOW” are marked

on the valve nameplate, which is mounted on the
flange O.D. The seat end identifies which end the seat
can be adjusted from when the valve is closed. The
flow direction may affect valve torque for large valves.
Some specific piping problems are also shown in the
figures to the right.

GENERAL PIPELINE APPLICATIONS: Orient the

“Seat End” towards the access point (i.e. manway,

pipe coupling, or spool).

WATER SERVICE: The normal flow direction is
towards the seat end of the valve. When the flow
stops, the return pressure will be held by the closed
disc and the seat bolts (8) can be adjusted to provide
tight shut off should the seat be worn or damaged.

The normal flow direction and the words "SEAT END"

are marked on the nameplate.

AIR AND GAS SERVICE: Install valve with pressure

toward the end opposite the “Seat End”. Lubricate

resilient seat with FDA approved silicone grease such
as Dow Corning #7 before installation. Gear actuators
are recommended for gas service applications.

PUMP DISCHARGE SERVICE: On all horizontal pump

discharge applications (Figure 3), the “Seat End”

should be towards the pump. The valve will seal tightly
against return flow allowing seat adjustment if
necessary. The valve shaft should be oriented parallel
to the plane of the pump discharge elbow (i.e. vertical
valve shaft on a vertical discharge elbow). If the
butterfly valve is downstream of a check valve, the
clearance between the two discs must be checked.
The butterfly valve shaft should be oriented as shown
in Figure 4.

BURIED SERVICE: The valve should be installed with
the shaft horizontal and the actuator nut directed
upwards (Figure 4). The valve box or extension pipe
should be installed so that the actuator nut and
extension stem turn freely.

NOTE: Adjust and test valve prior to backfill.

FLANGED ENDS: AWWA Class 150B flanged valves
should be mated to ANSI Class 125# or AWWA C207

flat-faced flanges equipped with resilient gaskets.
When ring gaskets are used, the bolt material shall be
ASTM A307 Grade B or SAE Grade 2 Carbon Steel.
Higher strength bolts may only be used with full-face
gaskets.

Some of the flange holes are tapped near the shaft
ends of the valve as shown on the Sales Drawing.
Special bolt lengths may be needed. An engagement
of at least one bolt diameter is typically used for the
flange bolts used in the tapped flange holes.

AWWA Class 250B flanged valves can be mated with
either ANSI Class 125#, ANSI Class 250# or AWWA
C207 flanges depending on the specified flange
drilling. Class 250B valves can be mated with flat­faced or raised-face flanges with full face or ring
gaskets and with no bolting restrictions.

FIGURE 3. PUMP DISCHARGE

FIGURE 4. UPSTREAM CHECK VALVE

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