Ashcroft AVC Operating Manual

Installation and Operating
Instructions for Ashcroft

®

Pressure Volume
Controllers, Models
AVC-1000 and AVC-3000

NSTALLATION (see figure)

I
Step 1 –

Install a valve to the vent port on the
pressure balance valve assembly.

Step 2 –

nstall a valve to the inlet port on the

I

ressure balance valve assembly.

p

Step 3 –

Install a tee fitting to the rear of the
AVC unit.

Step 4 –

Connect a pressure standard, for exam­ple a dial gauge or digital indicator to
one side of the tee. To the other side
of the tee connect the device to be
calibrated or tested.

NOTE (Installation) –

All plumbing connections are made to

1

⁄8 NPTF ports.

PERATION

O
Step 1 –

Open the pressure balance valve.

Step 2 –

Open the vent valve.

tep 3 –

S

urn the control knob to approximately

T
midrange. This will allow for increase
and decrease of system pressure.
Alternatively, the starting position of the
knob may be at the counterclockwise
or clockwise stop. This will allow for
maximum pressure increase (knob at
the counterclockwise stop) or maximum
pressure decrease (knob at clockwise
stop).

Step 4 –

Close the vent valve.

Step 5 –

Open the inlet v

alve to provide pressure
to approximately the desired pressure
level.

Step 6 –

When the appropriate pressure has
been achieved, close the inlet valve.

VENT VALVE

TMOSPHERE

A

DEVICE
UNDER

TEST

CONTROL KNOB

Step 7 –

Close pressure balance valve.

Step 8 –

Turn control knob clockwise to increase
system pressure or counterclockwise to
decrease system pressure.

NOTE (Operation) –

During operation the pressure balance
valve will automatically open if the pres­sure across the piston exceeds safe
levels. This is factory set at a nominal
pressure differential of 150 psi.

PRESSURE

MEASURING

DEVICE

INLET VALVE OR
REGULATOR

T

REGULA

PRESSURE

AC

BALANCE
VALVE

OR

PRESSURE
SOURCE

© Ashcroft Inc., 250 East Main Street. Stratford, CT 06614, USA Tel: [phone], Fax: [phone] www.ashcroft.com,

ights reser

All r

ved. All sales subject to standard terms and conditions of sale. I&M002-10054-11/00 (A-250-2974B) 1CAMR 2/07

Model AVC-1000 and 3000 Pressure Volume Controllers

PARTS LIST

ITEM QTY. PART

NO. PER ASSY. NUMBER DESCRIPTION

1 1 Final Assembly
2 1 603X002-01 Actuator (1000 psi unit)
2a 1 603X002-02 Actuator (3000 psi unit)
3 1 603X003-01 Lead Screw (1000 psi unit)
3a 1 603X003-02 Lead Screw (3000 psi unit)
4 1 603X004-01 Washer, Actuator
5 1 603X005-01 Body
6 1 603X006-01 Valve Body
7 1 603X007-01 End Cap
8 2 603X008-01 Guide Screw
9 3** 854X050-01 Pipe Plug

10

2** 605X003-09 Socket Head Screw (valve)
11 8 605X004-05 Socket Head Screw
12 1 605X005-01 Washer
13 2 607A001-02 O-Ring
14 3 607X001-04 O-Ring
15 3 607X001-05 O-Ring
16 1* 607X001-06 O-Ring
17 1 607X001-08 O-Ring (1000 psi unit)
17a 1 607X001-07 O-Ring (3000 psi unIt)
18 1 607A002-02 Back-up Ring
19

2 607X002-05 Back-up Ring
20 1 607X006-01 Retaining Ring
21 1 609X005-01 Spool Valve
22 1 609X006-01 Retainer Valve
23 1 614X003-01 Piston (1000 psi unit)
23a 1 614X003-02 Piston (3000 psi unit)
24 1 618X004-01 Label, Valve Control
25 1 618X005-03 Label (1000 psi unit)
25a 1 618X005-04 Label (3000 psi unit)
26 1 619X001-02 Knob, Adjustment
27 1 619X002-01 Knob, Balance Valve
28 1 620X001-01 Bearing, Ball Thrust
29

1**

617X006-01

Mounting Kit, Panel
30 1** 621X001-02 Table Mount Bracket(optional)
31

**Quantity is 2 in model AVC-3000.

**Not shown.

1 610X002-01 Sleeve (3000 psi unit)

SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE

© Ashcroft Inc., 250 East Main Street. Stratford, CT 06614, USA Tel: [phone], Fax: [phone] www.ashcroft.com,
All rights reserved. All sales subject to standard terms and conditions of sale. I&M002-10054-11/00 (A-250-2974B) 1CAMR 2/07