Flowserve APEX 5000 Positioner NAMUR Accessories Manuel d'utilisateur télécharger pdf

B00065 (AUTO-70) 4/00 Page: 1 of 2

Automax Valve Automation Systems

Installation, Operation and Maintenance Instructions

Flowserve Corporation 765 South 100 East Phone: 801 373 3028

Flow Control Division Provo, Utah 84606 Facsimile: 801 489 2228

www.flowserve.com Email: actuators@flowserve.com

APEX 5000 Positioner NAMUR Accessories

Introduction:

The Apex 5000 Modular Positioning System (AMPS) features

a NAMUR output port/accessory mounting screw pattern.

This feature enables use of several NAMUR accessories:

1. Flow Control Module: This module is a wafer block

including one check-and-needle style flow control valve

for each port. It allows free flow to the actuator and

restricts exhaust flow from the actuator. Applications

for this module include situations where system valve

hydrodynamic torque causes system overshoot by acting

to assist closing or opening. Spring return actuators can

also cause overshoot in the fail direction. The flow control

module reduces overshoot by restricting exhaust flow,

thereby slowing travel.

2. Block and Bleed Module: This module is a manually

operated spool valve. In the normal position, it allows

free flow to and from the actuator. When actuated, it

blocks flow from the positioner and vents air from the

actuator allowing actuator/valve manual override. It can

be locked in the block and bleed position with a simple

padlock.

3. NAMUR Solenoid Valves: Any NAMUR mount solenoid

or pneumatic pilot valve can be mounted allowing

numerous override configurations.

Namur accessory kits include (1) NAMUR module (or

modules), (1) 1/4 NPT block, (4) o-rings (2 additional for

each additional accessory), and (2) mounting screws.

Installation:

1. Remove supply pressure, disconnect actuator tubing at

positioner output ports and remove fittings from positioner.

2. Clean any pipe sealant, dirt, or other foreign material from

NAMUR mounting surface.

3. Place (2) o-rings in o-ring pockets of NAMUR accessory(s)

and of NPT block.

4. Place accessory and NPT block against positioner with

o-ring side towards positioner.

5. Fasten with (2) mounting screws.

6. Install tubing fittings in NPT block. Caution: Do not use

Teflon tape as a pipe thread sealant. Use only a liquid or

paste non-hardening pipe sealant on the threads.

7. Connect actuator tubing.

Figure 1 - Flow Control Module Schematic

FLOW

CONTROL

MODULE

APEX

5000

ACTUATOR

1 2

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Flowserve APEX 5000 Positioner NAMUR Accessories Manuel d'utilisateur

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