SR8T Valve Data - AAA Products International

AAA Products International Inc.
7114 Harry Hines Blvd.
Dallas, Texas 75235
214-357-3851

Data for SR8T

The SR8T is a 1" NPTF side ported, 2 position, pilot return, solenoid operated valve with 1/8" NPTF tapped solenoid vent/exhaust. The spool is shifted by 25 to 160 psi internal pilot air derived from pressure in port 1 when the solenoid is energized. The spool is returned by 25 to 160 psi pilot air applied to the 1/8" NPTF port in the rear end cap and the solenoid is de-energized. See additional information on solenoid valve operation. Standard voltage is 120/60, indicate other voltages (i.e. 12VDC, 24VDC, 240/60 etc.).

Details

Pressure: 25 to 160 psi on the main body of the valve when solenoid is internally piloted.
Vacuum: The valve cannot be vacuum operated when the solenoid is internally piloted.
Temperature: -20°F to 120°F ambient. Caution: If it is possible that the ambient temperature may fall below freezing, the medium must be moisture free to prevent internal damage or unpredictable behavior.
Mounting: The spool is friction positioned so the valve must be mounted with the spool in a horizontal orientation.
O-Rings: Buna-N.
Solenoid Seat: Buna-N.
Materials: Black anodized 356-T6 aluminum body, hard anodized aluminum spool, A380 aluminum end caps, composite gaskets, steel fasteners.
Flow: 478 SCFM, 11.1 Cv
Repair Kit: ERKV-8 & RKPSV-1.
3-Way or 5-Way: This valve is basically 4-way, it must be configured for external pilot (Option 'Z') for 5-way service by using ports 2 or 4 as an inlet, or 3-way service by plugging the unused port 2 or 4.
Fluid Media: Soft seal models are made for air, vacuum, and gases compatible with component materials. They should not be used with liquids.

"Classic" Operator & Coil - Standard w/Tapped Exhaust

The "Classic" solenoid operators sturdy and tough construction with a 1/2" NPT conduit connection. The stem exhaust is tapped 1/8" NPTF. Voltage must be specified when ordering valves that use this operator. If no voltage is specified, then 120/60 is provided. Other voltages not shown below are available. Coil can be rotated in any direction on operator stem when space is available. Caution must be used when rotating coil so not to untighten the stem from the adaptor block. Standard leads are 18", longer leads available on request. When connecting to an electrical source either black wire can be connected to hot (+) and the other connected to neutral (-).

Voltage	Pick-Up	Holding	Resistance	Operator	Spare Coil*
24 volts, 60 Hz	1.72 amps	1.10 amps	5.39 ohms	AY-38T-4	V-67-4
120 volts, 60 Hz	0.36 amps	0.23 amps	135 ohms	AY-38T-11	V-67-11
240 volts, 60 Hz	0.18 amps	0.12 amps	546 ohms	AY-38T-17	V-67-17
12 volts D-C		1.20 amps	12.8 ohms	AY-38T-5	V-67-5
24 volts D-C		0.58 amps	61 ohms	AY-38T-8	V-67-8

Materials: Steel, stainless steel, thermoset polyester molded resin coil, Buna-N seat & O-Ring.
Repair Kit: RKPSV-1 includes plunger, spring & O-Ring.
Ambient Temperature: -4°F to +120°F.
Relative Duty Cycle: 100%.
Degree of Protection: NEMA 1.
Voltage Tolerance: ± 10%.
Resistance Tolerance: ± 8% at 20°C.
Orifice Size: 3/64" base, 1/16" stem.
Insulation Class: B
*Coils: The encapsulated coils are UL approved. The coil is marked or embossed with QC130, QC155, or QC180. UL Document.

General - Installation & Maintenance

Valves should be installed with reasonable accessibility for service. Exercise care in keeping tubing lengths to a minimum. Plumbing should be free of contamination. Pipe joint compound should be used sparingly applied only to the thread, never the valve body. Over tightening of pipe threads can fracture the joint causing leaks or failure. Protect the valve from exposure to extreme temperatures, dirt and moisture to maximize life.
Bulletin A-113: Operating & Maintenance Instructions.
Installation: Valve Fitting Installation.

WARNING:These products can expose you to chemicals which is(are) known to the State of California to cause cancer or reproductive harm. For more information, go to www.P65Warnings.ca.gov. Contact us for specific chemicals or materials used in a product.

General - O-Ring Information

Unless otherwise specified, all 1/4" and 3/8" soft seal valves come standard with Viton O-rings and all 1/2", 3/4", 1", 1-1/2" and 2" soft seal valves come standard with Buna-N O-rings. If a different material is required, use the dash numbers following the basic valve numbering code. For example, model RY3G-2 will have Silicone O-rings installed for a low temperature application. On valves larger than 1" consult factory on availability of O-ring materials. Additional O-ring material information.

Dash No.	O-ring Description	Temperature Rating
-2	Silicone	-80°F to 400°F
-3	Viton for most aromatic gases	-20°F to 400°F, 600°F for short time
-7	Urethane, 70 Durometer	-65°F to 200°F
-9	Buna-N	-40°F to 250°F

We are constantly researching O-ring materials to evaluate performance and durability in the AAA valve product line. Above is a compilation of the most commonly requested O-ring materials and the associated dash number. If you have a particular application that requires an O-ring material that is not listed, please contact us. Since we utilize standard O-ring dimensions in our valves, we can respond to the most obscure O-ring material request.

General - Lubrication, Standard

All valves are pre-lubricated at the factory using Magnalube-G Teflon based all purpose grease. Valves are suitable for, and perform best in a non-lube service. For long life, use an air line filter/lubricator installed no further than 10-ft. from the valve. The filter should be rated 25 pm or finer. Use a good grade of petroleum base lubricating oil no heavier than SAE 10W. DO NOT OVER-LUBRICATE. This could cause the spool to stick. CAUTION! Do not use questionable fluids in air line lubricators. Do not use petroleum oil with detergent additives. Detergents, volatile or aromatic fluids may swell rubber seals in valves and cylinders. Never use cooking or vegetable oil as a lubricant. When cleaning AAA valves after extended service, lubricate the valve spool with AAA high film strength grease, or, use O-ring grease which is usually available from supply houses which sell O-rings. Magnalube-G is included in all valve repair kits for proper valve maintenance. If an additional amount of Magnalube-G grease is required, a 0.75 ounce tube is available under part number VGK-3. Never use any kind of oil, cup grease, or automobile chassis lubricant.

The shelf life of Magnalube-G regularly lasts for 10+ year intervals in closed packaging due to the extremely long operating life of the Elastomer-PTFE gelling agent and premium parafiinic mineral base oil. If the valve is stored for over 2 years, then a small reapplication of grease is suggested.

Magnalube-G Technical Document
Magnalube-G MSDS Document

An alternative grease for low temperature application, refer to Dow-55 grease.