Flowserve A25N User Manual

Automax Valve Automation Systems

3-Position Control/Dribble Control

Installation, Operation and Maintenance Instructions

Flowserve Corporation 1350 N. Mountain Springs Parkway 1978 Foreman Dr.
Flow Control Division Springville, Utah 84663 Cookeville, TN 38501
www.flowserve.com Phone: [phone] Phone: [phone]

SR Limit Switch Method

A25N NAMUR Directional Valve

The Automax NAMUR Directional valve mounts
directly to SuperNova series actuators which
eliminates the cost of tubing and fittings. The valves
are available for double acting and spring return
actuators with NEMA 4X, NEMA 4X, 7 & 9, or
weatherproof intrinsically-safe and low power
solenoid operators. These valves have been tested
and proven reliable for over 1 million cycles.

Operation

Solenoid will not shift without backpressure on ports
2 and 4. Air supply lines to the valve must have I.D.
at least as large as the NPT size of valve ports.

Temperature: NEMA 4X: -20°F to 150°F

NEMA 4X, 7 & 9: -20°F to 125°F
For temperatures below 40°F, air must
be free of water vapor.

Pressure: Minimum: 35 psig

Maximum: 150 psig

Media: Dry or lubricated non-corrosive gas

compatible with nitrile seals.

CV = 1.8
Flow Schematics:

(Port 1 - air supply)

3-way Valve (Spring Return Actuators)

4

2

315

When operator is energized, the spool shifts allowing the
air pressure to enter the actuator and compress the
springs. When de-energized, the spool returns,
exhausting the air.

4-way Valve (Double-acting Actuators)

4

2

315

When operator is energized, the spool shifts, driving the
actuator CCW. When de-energized the spool returns,
driving the actuator CW. For de-energized CCW, rotate
directional valve 180°.

Options:

Dual coil 2-position and 3-position valves are available.
Consult factory.
Sandwich NAMUR mount accessories:
APS1 - Air purge system to purge spring chambers

with solenoid valve exhaust.

FC1, FCSR and FCDA - Single port and dual port

exhaust flow controls.

LV1 - Lockout and vent valve for lockout and

manual override applications.
Automax sandwich NAMUR mount accessories provide compact,
clean control packages for the SuperNova actuator.

Solenoid Information

NEMA 4X Weatherproof

• Coil is U.L. and C.S.A. recognized.

• Standard 1/2" NPT connector meets
NEMA 4X rating.

• Connectors with strain relief for wiring
with 3 lead, 18ga cord available.

• Eliminates junction boxes at solenoid.
Simply plug in and tighten screw for
easy installation and service.

• Standard with non-locking override.

• Continuous duty molded class H coil.

NEMA 4X, 7 & 9 "Explosion-proof"

• 1/2" NPT conduit

• 24" Electrical leads

• Meets U.L., C.S.A. and
NEMA requirements for
Class I, Gr C & D Div. 1 & 2
Class II, Gr E, F & G Div. 1 & 2

• Standard with non-locking override

• Continuous duty molded
Class B Coil

Solenoid Electrical Characteristics

Characteristics for standard coils are shown below.
All common voltages and hertz are available.

AC VOLTAGE ±10% DC VOLTAGE

WEATHERPROOF 120 VAC 240 VAC 12 VDC 24 VDC

Inrush Amps 0.078 0.041 0.400 0.200
Holding Amps 0.058 0.030 0.400 0.200
Resistance ( Ω ) 840 3310 31.6 121

EXPLOSION-PROOF

Inrush Amps 0.127 0.063 0.632 0.320
Holding Amps 0.057 0.038 0.632 0.320
Resistance ( Ω ) 475 2000 19.0 75

Weatherproof intrinsically-safe/low power

A .67 watt coil is available with 1/2" NPT weatherproof
housing. The operator has Factory Mutual Entity approval.
See the separate I.S. operator I.O.M. for further information.

LMR0012-1 (Auto-12) 2/03

©

2003, Flowserve Corporation, Printed in USA

Page 1 of 2

Automax Valve Automation Systems

3-Position Control/Dribble Control

Installation, Operation and Maintenance Instructions

Flowserve Corporation 1350 N. Mountain Springs Parkway 1978 Foreman Dr.
Flow Control Division Springville, Utah 84663 Cookeville, TN 38501
www.flowserve.com Phone: [phone] Phone: [phone]

SR Limit Switch Method

Installation Instructions

The Automax A25N directional valve is installed very
easily to any SuperNova series actuator.

1. Place the O-rings provided into the O-ring bores on the face of
the valve. Each O-ring should be completely seated in the bore.

2. Place the actuator with the two ports facing you, and the pinion
pointing up. Orient the Automax solenoid valve with the (3)
O-rings toward the actuator and the operator towards the right.
(The small O-ring is for use with the optional APS1 module).

3. The valve is then mounted to the actuator with the two screws
provided. Apply Locktite Threadlocker 222 or equal to the
screws prior to assembly.

4. Connect the air supply to port #1 and wire solenoid per local
and national electrical codes. The assembly is now ready for
operation.

5. Optional porous bronze vents (P/N 101602) or adjustable
speed controls (P/N 100531) can be added to ports #3 & #5.

6. The A25N directional valve is easily converted from 4-way to
3-way configuration (see figures below). Move the conversion
screw from the front of the body to the NAMUR port (port #2)
on the back of the valve for 3-way operation. Apply a small
amount of thread sealant to eliminate leakage past the
conversion screw.

3-way Configuration

CONVERSION SCREW

LUBRICATION:

• Lubrication of AUTOMAX products is not required
but is recommended to maximize service life. Where
devices not made by AUTOMAX are used in the system
the manufacturer should be consulted regarding their
lubrication requirements.

• Lubricators should be installed downstream of regulators
per the manufacturer's instructions.

• AUTOMAX positioner supply air must be clean, dry and
oil free. Do not use lubricators in conjunction with
AUTOMAX positioners.

• Oils used in air line lubricators should be compatible with
seals used in the system. Generally AUTOMAX products use
Buna-N (Nitrile) with Viton seals available as an option.
Oils should be petroleum based with oxidation inhibitors,
an ISO 32 or lighter viscosity, and an aniline point between
82°C (180°F) and 104°C (220°F).

Note: See appropriate IOM's for installation of
sandwich NAMUR mount accessories.

SuperNova
Actuator

24˝ Leads

O-ring

(1) 103606

NEMA 4x
Operator

4-way Configuration

CONVERSION SCREW

1/4" NPT

O-ring

(2) 105775

Conversion Screw

#3

#5

Air Supply

(Port #1)

1/4˝ NPT

M5 x 30mm

Socket Head Screws

Ordering Guide

Automax A25N
Spool Type Body Type Operator Spring Voltages

A- 2-position 4-way A- single operator A - Remote air pilot D - 3 position spring center 1- 110/50, 120/60
C- 3-position 4-way - B- dual operator W - NEMA 4X R - 2 position spring return 2- 220/50, 240/60, 120VDC
blocked center X - NEMA 4X, 7 & 9 Repeat operator code for 3- 12VDC, 22/50, 24/60
F- 2-position 3-way I - Intrinsically Safe 2 position, dual operator 4- 24VDC

Ordering Example: Automax 4-way solenoid valve with NEMA 4X, 7 & 9 operator, spring return,
120 VAC / 60 HZ

would be: A25NAAXR1

LMR0012-1 (Auto-12) 2/03

©

2003, Flowserve Corporation, Printed in USA

L - Low Power 5- 15.5VDC
(12 & 24VDC only) (intrinsically safe only)
V - 1.8 Watt Low Power
NEMA 4X, 7, & 9

Nom. (30VDC Max.)

For other options - consult factory.

NEMA 4X, 7 & 9

Operator

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