Vag 221-D, 221-DS, 221-U, 221-US, 222-DS Installation, Operation And Maintenance Manual

INSTALLATION, OPERATION AND

MAINTENANCE MANUAL

Drawing C-1239 Figures 221-D, 221-DS, 221-U and 221-US

Single-Increasing Lever & Weight Swing Check Valves

(3”x 4”, 4”x 6”, 8”x 10” and 10”x 12”)

Drawing C-1164 Figures 222-D, 222-DS, 222-U and 222-US

Double-Increasing Lever & Weight Swing Check Valves

(3”x 6”, 4”x 8”, 6”x 10”, 8”x 12” and 10”x 14”)

TABLE OF CONTENTS
Introduction ….………………………… 1

Description of Operation .....………… 1

Receiving & Storage .....……………… 1

Installation ......…………………………. 1

Valve Construction ......………………. 2

Start-Up ...………………………………. 2

Preventive Maintenance ....………….. 2

Trouble Shooting ...…………………… 2

Disassembly ....………………………… 2

Assembly ....……………………………. 3

Parts List ……………………………….. 3
Figure 221 Drawing/Parts Location …. 4
Figure 222 Drawing/Parts Location …. 5
Warranty .……………………………….. 6

9025 Marshall Road • Cranberry Township, PA 16066 USA

Telephone [phone] • Fax [phone]

E-mail: [e-mail]

Manual Number 221-222-IOM-0818R0

1

INSTALLATION, OPERATION and

MAINTENANCE

Figures 221-D, 221-DS, 221-U, 221-US Single-Increasing

Figures 222-D, 222-DS, 222-U, 222-US Double-Increasing

Lever & Weight Swing Check

INTRODUCTION

This manual will provide the information to properly
install, operate and maintain the valve to ensure a
long service life. Figure 221 and 222 Swing Check
Valves are ruggedly constructed to provide years of
trouble-free operation with minimal maintenance.

CAUTION

The valve is NOT recommended for use with toxic or
highly corrosive fluids, fuels or fluids containing
hazardous gases

The Shop Order (SO) Number, Figure Number, size
and pressure rating are stamped on a nameplate
attached to the valve. Please refer to the SO number
when ordering parts.

DESCRIPTION OF OPERATION
The Figure 221 & 222 Swing Check Valve is a
counter-weighted rubber- or metal-seated check valve
designed to permit flow in one direction and close to
prevent reverse flow. The valve opens when the inlet
pressure exceeds the outlet pressure. The degree of
opening depends on the fluid velocity through the
valve. The valve will swing closed as fluid velocity
decreases and be fully seated before flow reversal
precluding slam and bang.

RECEIVING AND STORAGE

Inspect the valve upon receipt for damage during
shipment. Carefully unload all valves to the ground
without dropping.

The valves should remain in a clean, dry and weather
protected area until installed. For long term storage
(greater than 6 months) the rubber surfaces of the
seat should be coated with a non-toxic lubricant such
as "SuperLube" made by Synco Chemical. Do not
expose the rubber parts to sunlight or ozone.

INSTALLATION

Figure Numbers suffixed with “D” indicated the valve

has ANSI Class 125 flanged connections, Figure
Numbers suffixed with “U” indicate the valve has
ANSI Class 250 flanged connections.

Consult the drawings of record to verify the
configuration supplied and installed.

Prior to installation ensure all debris, packing material
or other foreign material has been removed from both
ports.

The valve can be installed in a horizontal or vertical
(upward flow direction) pipe. In either case the
counterweight arm must be horizontal when the valve
is closed.

Install the valve in the proper flow direction. Forward
flow should tend to open the valve. “Increasing” size
check valves have the smaller connection as the inlet;
the outlet is expanded one or two sizes larger than
the nominal inlet size.

If installed outdoors, below ground in a vault or in an
unheated area, adequate freeze protection must be
provided.

Adequate isolating valves should be installed between
the valve and the pipeline or system to facilitate
maintenance.

The valve is not designed to support adjacent
equipment, piping loads should not be imposed on the
valve and large valves should be properly supported.
Ensure mating flanges are square and parallel to the
valve flanges before tightening flange bolts.

Flat-faced flanged valves should be mated with flat­faced flanges and full-face gaskets. If ring gaskets
are used the bolt material shall be ASTM A307 Grade
B (or equivalent). Higher strength bolting should only
be used with full-face gaskets.

Lower heavy valves using slings or chains around the
valve body and/or the lifting eye. Lubricate the bolts
or studs and insert around flange. Lightly tighten
bolts until gaps are eliminated. Torque bolts in an
alternating pattern in graduated steps. If leakage
occurs wait 24 hours and re-torque the bolts but do
not compress the gasket more than 50% or exceed
bolt maximum torque rating.

2

VALVE CONSTRUCTION

The standard Figure 221 and 222 Swing Check Valve
has a cast iron body, bronze or stainless steel (Figure
Number suffixed with “S”) body seat, stainless steel
hinge shaft and cast iron disc with a rubber disc seat.
An “M” suffixed to the Figure Number (e.g., 221-DM,
222-USM) indicates optional metal-to-metal seating
was supplied. Refer to the List of Materials submitted
for the order if non-standard materials were provided.

Refer to Pages 4 or 5 for details of construction and
parts location.

START-UP

The valve generally does not require any calibration
or adjustment prior to start-up. The counterweight(s)
should be initially placed at the far end of the arm and
secured by tightening the set screw (31A).

The valve should smoothly swing open as flow
through the valve increases. The amount of opening
depends on the flow velocity through the valve and
can be observed by watching the external
counterweight arm. The valve is “full ported” at about
25 degrees of swing but can swing open as much as
60 degrees.

Shut down the pump and observe the valve’s closure.
If the valve was less than 60 degrees open and the
closure was smooth and quiet then the weight(s) may
be moved incrementally toward the shaft. Repeat
these steps to the point where the valve opens to the
extent possible but still closes quietly.

Non-slam operation is achieved when the
counterweight closes the valve prior to flow reversal.
In extreme cases, it may be necessary to install
additional counterweight(s) to effect non-slam closure.

PREVENTIVE MAINTENANCE

Figure 221 and Figure 222 Swing Check Valves
require no scheduled lubrication, adjustment or
preventive maintenance.

A monthly inspection should be performed for the first
6 months of operation to ensure the valve is
functioning properly and there is no external fluid
leakage or audible evidence of water leaking
backwards through the closed valve.

Thereafter, a quarterly visual inspection should be
performed.

TROUBLESHOOTING

• Shaft packing leakage
Tighten packing gland nuts equally just

enough to stop leakage, no more than ½ turn
at a time. DO NOT OVER-TIGHTEN!
Replace packing if necessary.

• Leakage past seat when closed
Inspect valve for debris, clean
Inspect seating surfaces for damage, replace

as necessary

• Leakage past cover or flange gaskets
Tighten cover or flange bolts

• Disc oscillating when open
Move counterweight(s) toward shaft

• Valve slams upon closing
Move counterweight(s) toward end of arm
Ensure shaft packing is not too tight

Install additional counterweight(s)

WARNING

Removing the valve from the line or disassembling

the valve while there is pressure in the valve body

may result in injury or damage to the valve

WARNING

Follow all applicable safety regulations and codes and

read and understand all instructions before

undertaking disassembly.

DISASSEMBLY

All GA Industries Figure 221 and Figure 222 check
valves can be serviced while the body remains
connected to the pipeline. A skilled technician should
perform all work. No special tools are required.

First ensure there is no pressure within the valve and
operating equipment is tagged and locked out. Refer
to pages 3 and 4 for parts identification and location.

It is not necessary to disassemble the entire valve to
replace the shaft packing, follow steps 1 to 3 and 5a.

1. Ensure there is no pressure within the valve
and operating equipment is locked out.

2. Mark the position of the counterweight(s) on
the arm. Loosen the counterweight set
screw (31A) and slide the weight(s) off the
arm. Loosen the counterweight arm set
screws (30A) and slide the arm (30) off the
shaft, being careful not to lose the key (30B).

3. Loosen and remove the gland stud nuts (16),
slide off the gland (15) and remove the shaft
packing (17).

4. Remove the end plate bolts (35), the end
plate (34) being careful not to lose or
damage the end plate seal (36) unless it is to
be replaced

5. Remove the cover bolts (10) and lift off the
cover (9). If necessary, carefully pry the
cover off using a cold chisel between the
body and cover. Be careful not to damage

3

or lose the cover gasket (8) unless it is to be
replaced.

6. Remove the shaft lock pin (18) by threading
a screw into the tapped hole.

7. With the disc and disc arm properly
supported, loosen the disc arm set screw
(12) and pull the shaft (11) out of the valve.
It may be necessary to drive out the shaft
from the opposite end.
NOTE: The outer bushing (14) and disc arm

key (19) should come out with the
shaft. Be careful not to lose the disc
arm key. After the shaft is out,
remove the inner bushing (13) from
the opposite side.

8. Carefully lift the disc arm assembly out of the
body. Remove the disc nut pin (6B), disc nut
(6) and disc nut washer (6A).

9. Remove the seat screws (5C), the seat
follower (5B) and the renewable seat (5A) or
metal seat washer (5D).

10. In the unlikely event it’s necessary to remove
the body seat (2), the spring pins holding it
into the body must be compressed until they
no longer “bite” into the body. This is best
accomplished by compressing the seat pins
(2B) using “vice-grips” and pulling the pins in
a radial direction towards the valve
centerline.

Inspect all parts for wear and damage. Replace
damaged parts.

ASSEMBLY

The valve is reassembled by reversing the
disassembly sequence with consideration of the
following:

1a. Clean and polish all machined bearing and

sealing surfaces. Apply a light coat of
lubricant to assist in the assembly.

2a. Ensure the disc arm key slides inside the

disc arm before installing the shaft lock pin
(18). Ensure the shaft lock pin has
dropped into the groove provided for it on
the shaft.

3a. Install the inner and outer bushings then

install the shaft packing. Install the end
plate (34) with seal (36). Install and tighten
the end plate bolts (35) while ensuring the
end plate seal (36) remains in the groove
provided for it in the end plate.

4a. Lift the disc assembly several times to

ensure free closure with no metal-to-metal
contact.

5a. Wrap the packing around the shaft and cut

on a 45-degree angle, staggering the cuts
with each ring.

6a. Tighten gland bolts evenly until packing is

slightly compressed. After pressure has
been introduced into the valve, re-tighten
evenly until leakage stops.

7a. Ensure cover gasket sealing surfaces are

clean and apply a thin coat of Permatex™
#2 to both surfaces. Tighten cover nuts in
an alternating pattern. Re-tighten as
needed after pressure has been introduced.

8a. Re-install the counterweight arm (30) with

key (30B) and tighten counterweight set
screws (30A).

9a. Slide counterweight(s) onto shaft and lock

in place using set screws (31A). Lift
counterweight arm and allow it to fall to
ensure free movement.

REPLACEMENT PARTS

Genuine replacement parts are available from your
local VAG/GA Industries representative or from the
factory:

VAG USA, LLC
9025 Marshall Road
Cranberry Township, PA 16066 USA
Telephone: [phone]
Fax: [phone]
E-mail: [e-mail]

Please have the nameplate data available when
ordering parts. Identify needed part(s) by Shop Order
(SO) Number, Figure Number, valve size and
individual part number.

Part No. Part Name Std. Material

1 Body Cast Iron
2 Body Seat Bronze or SS
2A Seat O-Ring Buna-N
2B Seat Pins Stainless Steel
3 Disc with Center Pin Cast Iron/Steel
4 Disc Arm Ductile Iron
5A Renewable Seat Buna-N
5B Seat Follower Bronze or SS
5C Seat Screws Stainless Steel
5D Metal Seat Washer (Opt’l) Bronze or SS
6 Disc Nut Steel
6A Disc Nut Washer Steel
6B Disc Nut Cotter Pin Stainless Steel
8 Cover Gasket Fiber
9 Cover Steel
10 Cover Bolt (and Nut) Steel
11 Shaft Stainless Steel
12 Disc Arm Set Screw Stainless Steel
13 Inner Bushing Bronze
14 Outer Bushing Bronze
15 Gland Cast Iron
16 Gland Stud & Nut Steel
17 Packing Teflon
18 Shaft Lock Pin Brass
19 Disc Arm Key Stainless Steel
30 Counterweight Arm Ductile Iron/Steel
30A C’weight Arm Set Screw Stainless Steel
30B Counterweight Arm Key Stainless Steel
31 Counterweight(s) Cast Iron
31A Counterweight Set Screw Stainless Steel
34 Shaft End Plate Steel
35 Shaft End Plate Screws Steel
36 Shaft End Plate Seal Buna-N

4

Figure 221

-D, 221

-DS, 221

-U, 221

-US Single Increasing

and

Figure 222

-D, 222

-DS,222

-U, 222

-US Double Increasing

Parts Location

5