beautypg.com

Flowserve A25N NAMUR Directional Valve User Manual

A25n namur directional valve, Operation, Solenoid information

background image

©

2003, Flowserve Corporation, Printed in USA

LMR0012-1 (Auto-12)

2/03

3-Position Control/Dribble Control

SR Limit Switch Method

Automax Valve Automation Systems

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: 801 489 8611

Phone: 931 432 4021

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.

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.

4-way Valve (Double-acting Actuators)

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

°.

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

V

= 1.8

Flow Schematics:

(Port 1 - air supply)

3-way Valve (Spring Return Actuators)

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.

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.

• 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.

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.

Solenoid Information

NEMA 4X Weatherproof

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

Page 1 of 2

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.

A25N NAMUR Directional Valve

3

1

5

2

4

3

1

5

2

4