ASCO Valves 8262 Series

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50-60 Hanover Road, Florham Park, New Jersey 07932

ASCO Valves

Printed in U.S.A.

Installation & Maintenance Instructions

SERIES

Form No.V5256R8

2-WAY DIRECT-ACTING SOLENOID VALVES

BRASS OR STAINLESS STEEL CONSTRUCTION - 1/8, 1/4, OR 3/8 NPT

8262

8263

NORMALLY OPEN OR NORMALLY CLOSED OPERATION

IMPORTANT: See separate solenoid installation and maintenance

instructions for information on: Wiring, Solenoid Temperature,

Causes of Improper Operation, and Coil or Solenoid Replacement.

DESCRIPTION

Series 8262 and 8263 valves are 2-way direct-acting general service

solenoid valves. Valves bodies are of rugged brass or stainless steel.

Series 8262 or 8263 valves may be provided with a general purpose or

explosionproof solenoid enclosure. Series 8262 and 8263 valves with

suffix P" in the catalog number are designed for dry inert gas and

non-lubricated air service.

OPERATION

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

when is energized.

Normally Closed: Valve is closed when solenoid is de-energized;

open when energized.

IMPORTANT: No minimum operating pressure required.

Manual Operation

Manual operator allows manual operation when desired or during an

electrical power outage. Depending upon basic valve construction,

three types of manual operators are available:

Push Type Manual Operator

To engage push type manual operator, push stem at base of valve body

upward as far as possible. Valve will now be in the same position as

when the solenoid is energized. To disengage manual operator, reĆ

lease stem. Manual operator will return to original position.

Screw Type Manual Operator

To engage screw type manual operator, rotate stem at base of the

valve body clockwise until it hits a stop. Valve will now be in the same

position as when the solenoid is energized. To disengage, rotate stem

counterclockwise until it hits a stop.

CAUTION: For valve to operate electrically, manual operator

stem must be fully rotated counterclockwise.

Stem/Lever Type Manual Operator

To engage manual operator, turn stem/lever clockwise until it hits a

stop. Valve will now be in the same position as when the solenoid is

energized. To disengage manual operator, turn stem/lever counterĆ

clockwise until it hits a stop.

CAUTION: For valve to operate electrically, manual operator

stem/lever must be fully rotated counterclockwise.

Flow Metering Devices

Valves with suffix M" in catalog number are provided with a meterĆ

ing device for flow control. Turn stem to right to reduce flow; left to

increase flow.

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.

Note: Inlet port will either be marked I" or IN". Outlet port will be

marked 2" or OUT".

Future Service Considerations.

Provision should be made for performing seat leakage, external leakĆ

age, and operational tests on the valve with a nonhazardous,noncomĆ

bustible fluid after disassembly and reassembly.

Temperature Limitations

For maximum valve ambient and fluid temperatures, refer to charts

below. Check catalog number, coil prefix, suffix, and watt rating on

nameplate to determine the maximum temperatures.

Wattage

Catalog

Number

Coil

Prefix

Coil

Class

Max.

Ambient

Temp. F

Max.

Fluid

Temp. F

6, 10.5,

12.4

none,ĂDA or

A 77 180

6,10.5

12.4

DF, FT

or SF

F 125 180

6,10.5,

12.4

HT H 140 180

9,10.7

none, DP or

F 77 180

9.7

none, FT or

A, F

or H

77 120

11.2

none, FT or

A, F

or H

77 150

16.7

none, DP or

F 77 200

17.1

none, KP

SP or SD

F 125 180

17.1

HB, KB SS

or SV

H 140 180

Catalog Nos.8262B200 and 8262 C200 AC construction only and

Catalog Nos.8262B214 and 8262 D200 AC and DC construction are

limited to 140F fluid temperature.

Valves with Suffix V or W that are designed for AC service and norĆ

mally closed operation are for use with No. 2 and 4 fuel oil service.

These valves have the same maximum temperatures per the above

table except Suffix W valves are limited to a maximum fluid temperaĆ

ture of 140F.

Listed below are valves with Suffix V in the catalog number that are

acceptable for higher temperatures.

Catalog Number

Coil Prefix

Max. Ambient

Temp.F

Max. Fluid

Temp.F

FT8262, HB8262

FT8263, HB8263

8262G, 8263G

125 250*

HT or HB 8262G

HT or HB 8263G

140 250

*The only exception is the 8262G and 8263G series (Class F coil) at 50

Hertz rated 11.1 and 17.1 watts are limited to 210F fluid temperature.

Positioning

This valve is designed to perform properly when mounted in any posiĆ

tion. However, for optimum life and performance, the solenoid

should be mounted vertically and upright to reduce the possibility of

foreign matter accumulating in the solenoid base sub-assembly area.

Need help?

Do you have a question about the ASCO Valves 8262 Series and is the answer not in the manual?

This document describes the installation and maintenance procedures for ASCO Series 8262 and 8263 2-way direct-acting solenoid valves. These valves are designed for general service and are available in brass or stainless steel construction with 1/8", 1/4", or 3/8" NPT connections. They can be configured for either normally open or normally closed operation. Some models, identified by a "P" suffix in the catalog number, are specifically designed for dry inert gas and non-lubricated air service.

Function Description:

The Series 8262 and 8263 valves are 2-way direct-acting solenoid valves. In normally open configurations, the valve is open when the solenoid is de-energized and closes when energized. Conversely, in normally closed configurations, the valve is closed when the solenoid is de-energized and opens when energized. A key feature is that no minimum operating pressure is required for these valves.

Important Technical Specifications:

The valves are available with various wattage ratings and coil prefixes, which determine their maximum ambient and fluid temperature limitations. For instance, a 6, 10.5, or 12.4 Watt valve with no coil prefix (or DA, S) has a Coil Class A, with a maximum ambient temperature of 77°F and a maximum fluid temperature of 180°F. A 6, 10.5, or 12.4 Watt valve with DF, FT, or SF coil prefixes has a Coil Class F, with a maximum ambient temperature of 125°F and a maximum fluid temperature of 180°F. For HT coil prefixes at the same wattage, the Coil Class is H, allowing for a maximum ambient temperature of 140°F and a maximum fluid temperature of 180°F. Higher wattage valves (e.g., 16.7W with DP or SP coil, Class F) can handle fluid temperatures up to 200°F, while 17.1W valves with KP SP or SD coil (Class F) have a maximum ambient temperature of 125°F and a maximum fluid temperature of 180°F. Specific models like 8262B200, 8262C200 (AC only), 8262B214, and 8262D200 (AC and DC) are limited to 140°F fluid temperature. Valves with suffix V or W for AC service and normally closed operation are for No. 2 and 4 fuel oil service, with a maximum fluid temperature of 140°F for suffix W valves. Certain models (FT8262, HB8262, FT8263, HB8263, 8262G, 8263G) can handle up to 250°F fluid temperature with a 125°F ambient temperature (Class F coil). The 8262G and 8263G series (Class F coil) at 50 Hertz rated 11.1 and 17.1 watts are limited to 210°F fluid temperature.

Usage Features:

Manual Operation: The valves can be operated manually, which is useful for desired manual control or during electrical power outages. Three types of manual operators are available:
- Push Type: To engage, push the stem at the base of the valve body upward until it stops. To disengage, release the stem.
- Screw Type: To engage, rotate the stem clockwise until it stops. To disengage, rotate counterclockwise until it stops.
- Stem/Lever Type: To engage, turn the stem/lever clockwise until it stops. To disengage, turn counterclockwise until it stops.
- Caution: For electrical operation, the manual operator stem must be fully rotated counterclockwise.
Flow Metering Devices: Valves with an "M" suffix in the catalog number include a metering device for flow control. Turning the stem to the right reduces flow, while turning it to the left increases flow.
Positioning: While the valve is designed to perform properly in any position, mounting the solenoid vertically and upright is recommended for optimum life and performance. This orientation helps reduce the possibility of foreign matter accumulating in the solenoid base sub-assembly area. Valves with a "P" suffix must be mounted vertically and upright.
Piping: Piping should be connected according to markings ("I" or "IN" for inlet, "2" or "OUT" for outlet). Pipe threads should be clean, and pipe compound applied sparingly to male threads only to prevent operational difficulty. Pipe strain should be avoided by proper support and alignment. Wrenches should be applied to the valve body or piping close to the connection point, not the valve or solenoid.
Strainer/Filter: To protect the solenoid valve, a suitable strainer or filter must be installed on the inlet side as close to the valve as possible. Regular cleaning is recommended.

Maintenance Features:

Safety Precautions: Before servicing, it is crucial to turn off electrical power, depressurize the valve, and vent fluid to a safe area to prevent personal injury or property damage. The valve does not need to be removed from the pipeline for repairs.
Cleaning: Solenoid valves require periodic cleaning, with frequency depending on the medium and service conditions. Sluggish operation, excessive noise, or leakage, or failure to open/close, indicates a need for cleaning. The strainer or filter should also be cleaned.
Preventive Maintenance:
- Ensure the medium flowing through the valve is free from dirt and foreign material.
- Operate the valve at least once a month to ensure proper opening and closing.
- Periodically inspect internal valve parts for damage or excessive wear. If parts are worn or damaged, install a complete ASCO Rebuild Kit.
Causes of Improper Operation:
- Incorrect Pressure: Check that valve pressure is within the specified range on the nameplate.
- Excessive Leakage: Disassemble, clean, and replace worn or damaged parts with an ASCO Rebuild Kit.
Valve Disassembly:
- Disassemble using exploded views for part identification.
- Remove the solenoid (refer to separate instructions).
- Unscrew the solenoid base sub-assembly or valve bonnet using a special wrench adapter (K218948).
- Remove the core assembly, core spring, and solenoid base gasket. For Series 8263, removing the valve seat is not necessary for normal maintenance.
- For normally open construction, remove the end cap (or manual operator), end cap gasket, disc holder spring, and disc holder assembly.
- All parts are then accessible for cleaning or replacement. If parts are worn or damaged, install a complete ASCO Rebuild Kit.
Valve Reassembly:
- Use exploded views for identification and placement of parts.
- Lubricate all gaskets with DOW CORNING® 111 Compound lubricant or an equivalent high-grade silicone grease.
- For normally open construction, install the disc holder assembly, disc holder spring, end cap gasket, and end cap or manual operator. Torque end cap or manual operator to 90 ± 10 in-lbs (10,2 ± 1,1 Nm) for 1/8" NPT valves, and 175 ± 25 in-lbs (19,8 ± 2,8 Nm) for other valves.
- For Series 8263, apply a small amount of LOCTITE® PST® pipe sealant to valve seat threads (if removed) and torque to 75 ± 10 in-lbs (8,5 ± 1,1 Nm).
- Replace the solenoid base gasket, core assembly with core spring, and solenoid base sub-assembly or plugnut/core tube sub-assembly and valve bonnet. For core assemblies with internal type core springs, install the wide end of the core spring in the core assembly first, with the closed end protruding from the top.
- For 1/8" NPT valve constructions, torque the valve bonnet to 90 ± 10 in-lbs (10,2 ± 1,1 Nm). Torque the solenoid base sub-assembly to 175 ± 25 in-lbs (19,8 ± 2,8 Nm).
- Install the solenoid (refer to separate instructions) and make electrical hookup.
- Warning: After maintenance, check the valve for proper operation and perform internal seat and external leakage tests with a nonhazardous, noncombustible fluid before returning to service.
- Restore line pressure and electrical power.
- Operate the valve a few times to ensure proper operation; a metallic click indicates solenoid operation.
Ordering Rebuild Kits: Parts marked with an asterisk (*) in the exploded view are supplied in Rebuild Kits. Order the Rebuild Kit number stamped on the valve nameplate. If not visible, indicate the number of kits required, the Catalog Number, and Serial Number of the valve(s).