Asco 8267A5, 8267A1, 8267A13, HT8267B9, 8267A9 Installation & Maintenance Instructions Manual

Installation & Maintenance Instructions

SERIES

2-WAY DIRECT-ACTING SOLENOID VALVES

NORMALLY CLOSED OR NORMALLY OPEN OPERATION

3/8I, 1/2I, OR 3/4I NPT - STEAM SERVICE

NOTICE: See separate solenoid installation and
maintenance instructions for information on: Wiring,
Solenoid Temperature, Causes of Improper Operation, Coil
or Solenoid Replacement.

DESCRIPTION

Series 8267 valves are 2-way normally closed or normally
open direct-acting solenoid valves. These valves are
designed for steam service. The guillotine- type disc
provides straight through flow, minimizing pressure drop
and turbulence through the valve. Series 8267 valves may be
provided with a general purpose, raintight/explosionproof
or raintight/watertight/explosionproof solenoid enclosure.

OPERATION

Normally Closed: Valve is closed when solenoid is
De-energized; open when energized.

Normally Open: Valve is open when solenoid is
De-energized; closed when energized.

Note: No minimum operating pressure differential
required. See nameplate for maximum.

Catalog
Number

8267A1
8267A5
8267A9
8267A13
HT8267B9
HT8267B13

8267A3
8267A7
8267A11
8267A15
HT8267B3
HT8267B11

FT8267A11,
FT8267A1104974

8267B7
8267B15

8267B3
8267B11

8267G1
8267G5
8267G9
8267G13

8267G3
8267G11

8267G7
8267G15

Coil
Insulation
Class

H 104_F

H

F

F

F

H

H

H

Form No.V5338R3

Maximum
Ambient
Temp.

(40_C)

104_F

(40_C)

104_F

(40_C)

86_F

(33_C)

86_F

(33_C)

125_F

(51.7_C)

125_F

(51.7_C)

125_F

(51.7_C)

8267

Maximum
Fluid
Temp.

320_F

(160_C)

280_F

(138_C)

190_F

(88_C)

250_F

(121_C)

280_F

(138_C)

320_F

(160_C)

274_F

(134_C)

250_F

(121_C)

INSTALLATION

Check nameplate for correct catalog number,
pressure, voltage, frequency, and service. Never apply
incompatible fluids or exceed pressure rating of the valve.
Installation and valve maintenance to be performed by
qualified personnel.

Future Service Considerations

Provision should be made for performing seat leakage,
external leakage, and operational tests on the valve with a
nonhazardous, noncombustible fluid after disassembly and
reassembly.

Temperature Limitations

For maximum valve ambient and fluid temperatures, refer
to chart above. Check catalog number on nameplate to
determine maximum temperatures.

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e

ASCO Valves

Positioning

Valve must be mounted with solenoid vertical and
upright.

Piping

Connect piping to valve according to markings on valve
body. Apply pipe compound sparingly to male pipe threads
only. If applied to valve threads the compound may enter
the valve and cause operational difficulty. Avoid pipe strain
by properly supporting and aligning piping. When
tightening the pipe, do not use valve or solenoid as a lever.
Locate wrenches applied to valve body or piping as close as
possible to connection point.

CAUTION: To protect the solenoid valve, install a
strainer or filter, suitable for the service involved, in the
inlet side as close to the valve as possible. Clean
periodically depending on service conditions. See
ASCO Series 8600, 8601, and 8602 for strainers.

Printed in U.S.A.

50-60 Hanover Road, Florham Park, New Jersey 07932 www.ascovalve.com

Page 1 of 4

MAINTENANCE

WARNING: To prevent the possibility death,
serious injury or property damage, turn off
electrical power, depressurize valve, and vent
fluid to a safe area before servicing the valve.

NOTE: Piping must be removed from inlet side of valve
body.

Cleaning

All solenoid valves should be cleaned periodically.
The time between cleanings will vary depending on the
medium and service conditions. In general, if the
voltage to the coil is correct, sluggish valve operation,
excessive noise or leakage will indicate that cleaning is
required. In the extreme case, faulty valve operation
will occur and the valve may fail to open or close. Clean
valve strainer or filter when cleaning the valve.

Preventive Maintenance

1. Keep the medium flowing through the valve as free from
dirt and foreign material as possible.

2. While in service, the valve should be operated at least
once a month to insure proper opening and closing.

3. Depending on the medium and service conditions,
periodic inspection of internal valve parts for damage or
excessive wear is recommended. Thoroughly clean all
parts. If parts are worn or damaged, install a complete
ASCO Rebuild Kit.

Causes of Improper Operation

1. Incorrect Pressure: Check valve pressure. Pressure to
valve must be within range specified on nameplate.

2. Excessive Leakage: Disassemble valve and clean all
parts. If parts are worn or damaged, install a complete
ASCO Rebuild Kit.

Valve Disassembly (Refer to Figure 1 &2)

1. Disassemble valve in an orderly fashion. Use exploded
views for identification and placement of parts.

2. Remove solenoid, see separate instructions.

3. Unscrew solenoid base sub-assembly from valve body.

4. Remove pipe adapter screws and lockwashers (2). Then
remove pipe adapter, adapter gasket, disc spring, and
disc guide from valve body.

5. Slip core/disc sub-assembly with retainer guide
sub-assembly and core spring from valve body

6. Remove solenoid base gasket from valve body.

7. Remove valve seat with seat gasket from valve body.

CAUTION: During removal for cleaning, do not
damage seating surface of valve seat (see Figure
1&2).

NOTE: If seat removal is difficult, remove valve body
from pipe line and dislodge seat through valve outlet. Use
a wooden dowel or similar tool.

8. All parts are now accessible to clean or replace. If parts
are worn or damaged, install a complete ASCO Rebuild
Kit.

Valve Reassembly

1. Lubricate seat gasket with DOW CORNINGR 111

compound lubricant or with an equivalent high-grade
silicone grease. Then install seat gasket in groove of valve
seat.

2. Insert valve seat gasket end first into valve body. Use a
rubber tool to prevent damage to the seating surface of the
valve seat. Apply pressure until valve seat bottoms in valve
body.

NOTE: When installing a vale seat in a 3/4
(see Figure 2) the elongated hole in the seat must be
aligned horizontal to mate with the hole in the core/disc
sub-assembly.

3. Install core/disc sub-assembly with sharp edge of hole in
core/disc sub-assembly toward valve seat.

4. Install disc guide large diameter end first into valve body.
Then position disc spring on disc guide.

5. Lubricate solenoid base gasket and adapter gasket with
DOW CORNINGR 200 Fluid lubricant or with an
equivalent high-grade silicone fluid.

6. Position adapter gasket on pipe adapter.

7. Install pipe adapter with gasket on valve body.

I NPT valve

CAUTION: Align pipe adapter evenly with

valve body to avoid damage to adapter gasket

8. Holding the pipe adapter in alignment, replace screws
with lockwashers (lockwashers use on 3/4I NPT valves
only). Torque screws evenly to 95± 10 in-lbs

[10,5±1,1Nm].

9. Position solenoid base gasket in valve body.

10. Install core spring small end first into the top of the
core/disc sub-assembly. Then install retainer/guide
sub-assembly.

11. For 3/4INPT Valves with a raintight /explosionproof or
raintight/watertight/explosionproof solenoid enclosure,
torque bonnet adapter to 175±25 in-lbs [ 19,8±2,8 Nm].

12. Install solenoid base sub-assembly into valve body.
Torque solenoid base sub-assembly to 300±30 in-lbs
[33,9±3,4 Nm].

13. Replace solenoid (see separate instructions) and make
electrical hookup.

14. Makeup piping to inlet side of valve body.

WARNING: To prevent the possibility of
death, serious injury or property damage,
check valve for proper operation before
returning to service. Also perform internal
seat and external leakage tests with a
nonhazardous, noncombustible fluid.

15. Restore line pressure and electrical power supply to
valve.

16. After maintenance is completed, operate the valve a few
times to be sure of proper operation. A metallic click"
signifies the solenoid is operating.

Page 2 of 4 Form No.V5338R3

50-60 Hanover Road, Florham Park, New Jersey 07932 www.ascovalve.com

ASCO Valves