NSS2TOCQZ Valve Data - AAA Products International

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

Data for NSS2TOCQZ

The NSS2TOCQZ 24VDC is a 1/4" NPTF side ported semi-subplated, NAMUR style, 2 position, double solenoid operated valve with a side exhaust nut on solenoid stem with a twist locking solenoid override with externally pressurized solenoid valve. The spool is retained in either position until shifted. The spool is shifted by 25 to 150 psi external pilot air when the solenoid is energized. The spool is returned when the solenoid is de-energized and the opposite solenoid is energized. Valve must be used with a NAMUR style connection. See additional information on solenoid valve operation. Coil is a 30mm wide ATEX coil with 3 meter cord. Standard voltage is 24VDC. Additional voltages available on special order.

Details

Pressure: 15 to 250 psi on the main body of the valve when solenoid is externally piloted.
Vacuum: The five main ports can be operated on industrial vacuum to 28" Hg, based on a 30" barometer.
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: Viton.
Solenoid Seat: Viton.
Materials: Black anodized 6061-T6 aluminum body, hard anodized aluminum spool, Viton solenoid seat, composite gaskets, steel fasteners.
Flow: 73.9 SCFM, 1.6 Cv
Repair Kit: ERKV-3.
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.

"E-Series" Operator - Twist Style Locking Override

This operator is equipped with a locking manual twist style override and a 1/8" NPT external pilot port. For external pilot operation, the internal pilot pressure must be blocked and the plug must be removed and external pilot source must be provided (150 psi maximum). All operators have internally threaded exhaust stems. The thread fits 10-32 UNF or 5mm-0.8 fittings. Solenoid operator is equipped with a locking manual override on the side of the solenoid structure. To activate manual override, twist the yellow lever clockwise to engage override. For replacement operators order ESPKO which is a V-599-1 operator and an EMG3 gasket (individual operator components are not available)

Material: Brass, steel, stainless steel, Viton seat.
Molding Material: Thermoplastic.
Ambient Temperature: -20°C to +50°C.
Internal Diameter Orifice: 1.3mm

"E-Series" Coil - Option T - ATEX

The ATEX/IEC coil is molded with 3 meters of 3 wire cord. The wire has one green/yellow ground (earth) wire, one brown wire and one blue wire. Either the brown or blue wire can be hot (+) and the other neutral (-). The coil is 30mm wide. These coils are rated by the European standards PTB 03 ATEX 2018 X, IECEx PTB 04.0002X. See below for exact approvals. Coil can be rotated in 45° increments on operator stem when space is available.

Voltage	Pick-Up	Holding	Resistance	Spare Coil
24 volts D-C		0.136 amps	177 ohms	V-612-3

Molding Material: Thermoplastic.
Ambient Temperature: -20°C to +50°C.
Relative Duty Cycle: 100%.
Degree of Protection: IP65 (IP67 possible with accessories).
Certifications: This coil carries the ATEX/IEC certificate of conformity. A copy of the certification is available here. The rating only applies to the coil and not the entire valve.
Voltage Tolerance: ± 10%.
Resistance Tolerance: ± 8% at 20°C.
Insulation Class: H

"E-Series" Nut - Side Exhaust

Side exhaust nut, part number V-562 reduces the noise and diffuses the solenoid exhaust. With this option the 10-32/5mm-0.8 tapped exhaust is inaccessible. To order standard solenoid valves with this nut, use option 'C' (e.g. ESY4C). For additional protection from dust/dirt incursion, use an O-Ring in the groove where the holes are located. The standard O-Ring size is AS-016, (ref 5/8 X 3/4 X 1/16) or order a V-565 Buna-N, 70 durometer O-Ring or V-411 Viton, 75 durometer O-Ring.

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 - 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.

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.