Flowserve S25N 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

S25N 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 4, 4X, 7 & 9, 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.

C

= 1.8

V

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°, so that operator points left.

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

• Optional DIN connector 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

• 24" electrical leads

• External air pilot

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

• External air pilot

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.

AXAIMO35-0 (AUTO-111) 07/03

©

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 S25N directional valve is installed very
easily to any SuperNova series actuator.

1. Place the gasket seal provided into the gasket bore on the face
of the valve. The gasket seal 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 gasket
seal toward the actuator and the operator towards the right.

3. The valve is then mounted to the actuator with the two screws
provided. Apply Loctite 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 S25N directional valve is easily converted from 4-way to
3-way configuration (see figures below right). With the NAMUR
interface facing forward, move the conversion plug from the
left to righthand port to convert to 3-way configuration.
The flathead screw will lift conversion plug out of port.
Tighten screw to secure conversion plug.

SuperNova
Actuator

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.

3-way Configuration

24" Leads

4-way Configuration

Gasket Seal

(p/n 110483)

Port #3

Air Supply

(Port #1)

1/4˝ NPT

Port #5

Socket Head Cap Screws

(as specified)

M5 x 40mm

Coil

Ordering Guide

Automax S25N
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
F- 2-position 3-way B- dual operator W - NEMA 4X R - 2 position spring return 2- 220/50, 240/60, 120 VDC
C- 3-position 4-way - X - NEMA 4X, 7 & 9 Repeat operator code for 3- 12 VDC, 22/50, 24/60
blocked center N - Intrinsically Safe 2 position, dual operator 4- 24 VDC
D- 3-position 4-way V - 1.8 Watt Low Power
exhaust center NEMA 4X, 7, & 9

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

would be: S25NAAXR1

AXAIMO35-0 (AUTO-111) 07/03

©

2003, Flowserve Corporation, Printed in USA

For other options - consult factory.

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