Flowserve LV1 User Manual

Automax Valve Automation Systems

Installation, Operation and Maintenance Instructions

Flowserve Corporation 765 South 100 East 1978 Foreman Dr.
Flow Control Division Provo, Utah 84606 Cookeville, TN 38501
www.flowserve.com Phone: [phone] Phone: [phone]

LV1 Lockout and Vent Valve

The LV1 Lockout and vent valve is a NAMUR
mounted module for the Automax SuperNova
actuator, with two primary uses. The LV1 may be used
as a compact bypass valve for use with a manual
override to shut off supply air and vent actuator ports.
The LV1 may also be used as a lockout valve which,
when properly implemented, will satisfy OSHA
Standard 1910.47, “The Control of Hazardous
Energy.” The LV1 may be sandwich mounted with
other Automax NAMUR accessories or may be used
with the NPT adapter.

Installation Instructions

Automax sandwich NAMUR mount accessories are
easily installed to the SuperNova actuator, simply by
stacking one on top of the other and bolting the entire
stack to the actuator NAMUR mounting surface.

Orientation of LV1:

The LV1 should be mounted to the actuator with
NAMUR O-ring grooves toward the actuator. The
spool shift lockout knob may be oriented either left or
right. Standard mounting is to the left, with the
exhaust port facing down. Automax recommends
orientation such that water or other contaminants
cannot drip into exhaust port.

To Install:

1. Follow order of installation below in stacking
accessories. If an accessory is not required, skip
it and proceed to the next accessory.

4. Mount entire stack to SuperNova NAMUR mounting
face, using appropriate bolt kit shown in chart on back
page of IOM. Apply Locktite Threadlocker 222 or equal
to screws prior to assembly.

Operation

The LV1 functions as a lockable block and bleed valve for
use as a manual override bypass valve or as a air supply
lockout valve. Under normal operation, air flows freely to
the actuator. The spool is shifted to block pressure ports
and exhaust actuator air pressure. A lock may be inserted
into the spool in the block and bleed position.

SuperNova Actuator

A25N Solenoid

Valve

Order of Installation:
a. LV1 Lockout and vent valve
b. FC1, FCDA, or FCSR flow control
c. APS1 or APS2* air purge system

or NPT1* NAMUR-NPT adapter block

d. A25N* solenoid valve

*One of these accessories should be the
last accessory in the stack. The NPT1
block provides 1/4’ NPT ports in cases
where FC1, FCDA, FCSR or LV1 would
be last accessory in stack.

2. Properly orient NAMUR accessory (see
appropriate IOM.)

3. Insert O-rings into O-ring grooves on back face of
accessory.

LV1Lockout and Vent Valve in

Automatic Operation

Used with manual override, the LV1 exhausts internal
actuator pressure to atmosphere, while blocking supply
pressure. Without internal pressure on the pistons, the
actuator may be freely manually operated. The single
exhaust port on the LV1 allows the piston chambers to
draw clean air from each other, rather than drawing
outside air as the actuator is being manually cycled back
and forth. This feature keeps possible corrosive
atmospheres from entering the actuator.

L V1 Valve

B00058-4 (AUTO-17) 3/02 Page 1 of 2

©

2002, Flowserve Corporation, Printed in USA

Automax Valve Automation Systems

Installation, Operation and Maintenance Instructions

Flowserve Corporation 765 South 100 East 1978 Foreman Dr.
Flow Control Division Provo, Utah 84606 Cookeville, TN 38501
www.flowserve.com Phone: [phone] Phone: [phone]

LV1 Lockout and Vent Valve

Operation (cont.)

Locking spool shaft in block and bleed position prevents
air pressure from operating the actuator. The intent of
this application is to satisfy OSHA requirements for
control of hazardous energy. With air supply to actuator
blocked, the actuator cannot be operated. The valve
mounted to the actuator is effectively “locked out” from
automatic operation.

Temperature: -20 F to 180

Pressure: 20 psig to 120 psig

Media: Dry or lubricated non-corrosive gas

compatible with nitrile/viton seals.

Estimated c

: 1.75

v

o

Maintenance

The LV1 module is factory lubricated for long lif e.
Should any problems arise with the LV1, consult factory.
If the valve is to be stored for extended periods of
time, periodically operate the spool to keep seals from
taking a set.

How to Order

Order part number LV1 with appropriate NAMUR mount
bolt kit from chart at right.

Example:

with A25N solenoid valve, order

To order LV1 to be sandwich NAMUR mounted

NAMUR Accessory Bolt Chart

FC1 / FCDA FCSR

LV1 FC# APS1 APS2 NPT1 A25N Bolt Kit Bolt Kit Bolt Kit
√ √ NBK40 NBK25 NBK40
√ √ √ NBK50 NBK65
√ √ NBK60 NBK50 NBK60
√ √ NBK55 NBK45 NBK55
√ √ √ NBK70 NBK80
√ √ √ NBK65 NBK55 NBK65
√ √ √ √ NBK80 NBK90
√ √ √ NBK75 NBK85

Other NAMUR accessories:

• EC1 - Sandwich mount flow control-one
direction.

• FCDA - Sandwich mount flow control-dual
direction for DA actuators.

• FCSR - Sandwich mount flow control-dual
direction for SR actuators.

• APS1 - Air purge system for spring return
actuators sandwich mount with A25N
solenoid valve.

• APS2 - Air purge system for spring return
actuators Namur mount for remote/line
mount solenoid valves.

• NPT1 - 1/4” NPT adapter plate.

• A25N - NAMUR mount solenoid valve.

Note:

see appropriate IOM’s for additional

information on above NAMUR accessories.

LV1 and NBK55.

How to Specify

The lockable block and bleed valve shall be an

Bill of Material

Item Material

Body Aluminum, Anodized
Spool Aluminum, Anodized
Endcap Aluminum, Anodized
Seals Nitrile, viton
Knob Plastic

B00058-4 (AUTO-17) 3/02 Page 2 of 2

©

2002, Flowserve Corporation, Printed in USA

Automax LV1 module, capable of being sandwich
NAMUR mounted with other NAMUR mount
accessories. The body shall be anodized aluminum.
Spool shall have extension shaft with knob and hole
capable of accepting a standard lock. In normal
position, valve shall allow free air flow. In locked
position, valve shall block external pressure, and vent
actuator pressure with internal air purging of the
cylinder bore during manual gear operation.