Omega Products PV-12SS Installation Manual

User’s Guide

PV SERIES

Electronic Proportioning

Control Valves

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It is the policy of OMEGA to comply with all worldwide safety and EMC/EMI regulations that
apply. OMEGA is constantly pursuing certification of its products to the European New Approach
Directives. OMEGA will add the CE mark to every appropriate device upon certification.

The information contained in this document is believed to be correct, but OMEGA Engineering, Inc. accepts
no liability for any errors it contains, and reserves the right to alter specifications without notice.
WARNING: These products are not designed for use in, and should not be used for, patient-connected applications.

1

PV Series

Electronic Proportioning Control
Valve

OPERATION

The PV closes on power-up. If closed, the
motor will stall. This is normal. It then opens
to the position governed by the switch settings
shown below.

INSTALLATION

Mechanical Connections

Connect the valve to your pipes by screwing
the pipes into the unit. If you use TFE tape,
make sure there are no loose pieces in the
fluid stream. Use unions when possible for
easy removal for maintenance or repair. Use
hangers to support the weight of the unit and
to eliminate stress on the pipes. The
direction of fluid flow should match the
arrows stamped on the side of the valve
body.

Electrical Connections

Wire Color Functions

White (A) 4-20mA or 1-5VDC
Black (B) Common for 4-20mA or

1-5VDC
Red (C) 12 to 24 VDC
Red/White (D) Common
Green (E) Open Full
input, dry

contact closure
Green/White(F) Close Full input, dry

contact closure
Blue (G) Common for Open

and Close inputs

1-Close ON - Close full. 50% if Switch 2

also ON.

OFF - nothing.

2-Open ON - Open full. 50% if Switch 1

also ON.

OFF - nothing.

3-FIlter ON - Noise filter engaged.

OFF - Noise filter diesengaged.

4-DDR ON - Reverses action of Switches 1

and 2.

OFF - nothing.

5-Fail ON - Fail closed on loss of signal.

OFF - Fail open on loss of signal.

6-Range Active if Switch 7 is OFF.

ON - Selects hi range. 12-20 mA or
3-5 VDC.

OFF- Selects low range. 4-12 mA
or 1-3 VDC.

7-Split ON - Full range. 4-20 mA or 1-5

VDC.

OFF - Split range. See Switch 6.

8-ADR ON - Reverse action. Large control

signal causes valve to close.

OFF - Direct Action. Small control
signal causes valve to close.

Move Jumper JP2 from center and bottom
pins to center and top pins to switch from 4­20mA to 1-5 VDC control signal. This
disconnects 250 Ohm resistor and connects
the 3.3K Ohm resistor.

2

MAINTENANCE AND REPAIR

Seat Seal Replacement

The seat seal and plunber are replaced as
a unit called the plunger assembly. When
replacing the plunger assembly, replace
the stem seal o-ring. Rebuilding kits are
available. The PV must be disassembled
to replace the seat seals.

Disconnect the PV from the power
source. Remove the æ-16 jam nut (1-1/8"
wrench). Lift the motor, bracket and plate
assembly off the valve. The coupling will
separate.

Remove the bonnet-stem assembly. Hold
the stem to keep it from rotating.
Unscrew the plunger assembly from the
stem. This is a left hand thread. Loosen
the set screws holding the coupling to the
stem. Slide stem out of bonnet.
Thoroughly clean all parts. Discard old o­rings.

Replace the o-ring with a new one.
Lubricate o-ring and stem with o-ring
lubricant compatible with process fluid.
Lubricate stem threads and outside of
plunger. Reassemble in reverse order of
disassembly.

shipping instructions prior to returning
the product for warranty consideration.
This warranty does not apply if the
product has been damaged by accident,
misuse, abuse or misapplication, hass
been modified, or if any serial number
has been removed or defaced.

Part Number Valve

10842 PV-14B

10854 PV-14SS

10741 PV-516B

10855 PV-516SS

10841 PV-38B

10856 PV-38SS

10852 PV-12B

10857 PV-12SS

10853 PV-34B

10858 PV-34SS

Figure 1. Rebuild Kits. Kits include:
plunger assembly, stem, TFE washer,
bonnet-body o-ring, bonnet-stem o-ring,
and silicone o-ring lube.

NOTE: Make sure seat seal is not
seated when tightening bonnet.

LIMITED WARRANTY

Omega Engineering warrants the PV
against defects in materials and
workmanship for a period of Five (5)
Years from the date of original purchase
date. If you discover a defect, Omega
will, at its option, repair, replace or
refund the purchase price of the product
at no charge to you provided you return it
during the warranty period, transportation
prepaid, to Omega. Contact Omega for a
Return Authorization Number and

3

1

3

4

2

3

4

5

6

7

8

9

10

11

Figure 2. PV Exploded Diagram

12

1

1

4

Ref Name

1 Motor

2 Screw

3 Platform

4 Coupling

5 Nut

6 Plate

7 Bonnet

Bonnet-

8

Body

Oring

Stem

9

Oring

TFE Stem

10

Washer

11 Stem

Plunger

12

Assembly

Plunger

13

Guide

14 Body

Part Number

PV14 PV516 PV38 PV12 PV34

-B -SS -B -SS -B -SS -B -SS -B -SS

10003 10535

10413 10629

10389 10600

10009 10536

10011 10510

10498 10605

10568A 10568B 10568A 10568B 10559A 10559B 10559A 10559B 10607A 10607B

10014 EPR 10323 EPR

10015 EPR 10347 EPR

10016 10324 10466 (2)

10017C 10017B 10017C 10017B 10325C 10325B 10325C 10325B 10608C 10608B

10093C 10093B 10625C 10625B 10326C 10326B 10462C 10462B 10627C 10627B

10385A 10385B 10385A 10385B 10386A 10386B 10520A 10520B 10482A 10482B

10383A 10383B 10523A 10523B 10384A 10384B 10591A 10591B 10621A 10621B

Figure 3. Part Number Reference Table

Symptom Cause Solution

Valve does not open and makes
stuttering noise.

Nothing happens. Power not connected. Check cabling.

Valve does not shut off fluid flow
tightly.

Process fluid leaks out of weep
hole in bonnet.

Valve does not follow control
signal

Valve was overtightened. Loosen by hand with screwdriver

in motor shaft slot, then close
gently.

Fuses blown in power supply. Replace fuses.

Obstruction between seat seal and
seat

Backflush valve or diassemble
valve and remove obstruction.

Worn out seat seal Replace plunger assembly.

O-ring failure. Turn off noise filter

Noisy control signal. Turn off noise filter (Jumper 3)

Figure 4. Troubleshooting Table

WARRANTY/DISCLAIMER

OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and
workmanship for a period of 61 months from date of purchase. OMEGA’s Warranty adds an
additional one (1) month grace period to the normal five (5) year product warranty to cover
handling and shipping time. This ensures that OMEGA’s customers receive maximum
coverage on each product.

If the unit malfunctions, it must be returned to the factory for evaluation. OMEGA’s Customer
Service Department will issue an Authorized Return (AR) number immediately upon phone or
written request. Upon examination by OMEGA, if the unit is found to be defective, it will be
repaired or replaced at no charge. OMEGA’s WARRANTY does not apply to defects resulting
from any action of the purchaser, including but not limited to mishandling, improper interfacing,
operation outside of design limits, improper repair, or unauthorized modification. This
WARRANTY is VOID if the unit shows evidence of having been tampered with or shows evidence
of having been damaged as a result of excessive corrosion; or current, heat, moisture or vibra­tion; improper specification; misapplication; misuse or other operating conditions outside of
OMEGA’s control. Components which wear are not warranted, including but not limited to
contact points, fuses, and triacs.

OMEGA is pleased to offer suggestions on the use of its various products. However,
OMEGA neither assumes responsibility for any omissions or errors nor assumes liability
for any damages that result from the use of its products in accordance with information
provided by OMEGA, either verbal or written. OMEGA warrants only that the parts
manufactured by it will be as specified and free of defects. OMEGA MAKES NO OTHER
WARRANTIES OR REPRESENTATIONS OF ANY KIND WHATSOEVER, EXPRESS OR
IMPLIED, EXCEPT THAT OF TITLE, AND ALL IMPLIED WARRANTIES INCLUDING ANY
WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
HEREBY DISCLAIMED. LIMITATION OF LIABILITY: The remedies of purchaser set forth
herein are exclusive, and the total liability of OMEGA with respect to this order, whether
based on contract, warranty, negligence, indemnification, strict liability or otherwise, shall
not exceed the purchase price of the component upon which liability is based. In no event
shall OMEGA be liable for consequential, incidental or special damages.

CONDITIONS: Equipment sold by OMEGA is not intended to be used, nor shall it be used: (1) as
a “Basic Component” under 10 CFR 21 (NRC), used in or with any nuclear installation or activity;
or (2) in medical applications or used on humans. Should any Product(s) be used in or with any
nuclear installation or activity, medical application, used on humans, or misused in any way,
OMEGA assumes no responsibility as set forth in our basic WARRANTY/ DISCLAIMER language,
and, additionally, purchaser will indemnify OMEGA and hold OMEGA harmless from any liability
or damage whatsoever arising out of the use of the Product(s) in such a manner.

RETURN REQUESTS/INQUIRIES

Direct all warranty and repair requests/inquiries to the OMEGA Customer Service Department.
BEFORE RETURNING ANY PRODUCT(S) TO OMEGA, PURCHASER MUST OBTAIN AN
AUTHORIZED RETURN (AR) NUMBER FROM OMEGA’S CUSTOMER SERVICE DEPARTMENT
(IN ORDER TO AVOID PROCESSING DELAYS). The assigned AR number should then be
marked on the outside of the return package and on any correspondence.

The purchaser is responsible for shipping charges, freight, insurance and proper packaging to
prevent breakage in transit.

FOR WARRANTY

RETURNS, please have
the following information available BEFORE
contacting OMEGA:

1. Purchase Order number under which

the product was PURCHASED,

2. Model and serial number of the product

under warranty, and

3. Repair instructions and/or specific

problems relative to the product.

FOR NON-WARRANTY REPAIRS,

consult
OMEGA for current repair charges. Have the
following information available BEFORE
contacting OMEGA:

1. Purchase Order number to cover the

COST of the repair,

2. Model and serial number of the

product, and

3. Repair instructions and/or specific problems

relative to the product.

OMEGA’s policy is to make running changes, not model changes, whenever an improvement is possible.
This affords our customers the latest in technology and engineering.

OMEGA is a registered trademark of OMEGA ENGINEERING, INC.
© Copyright 2002 OMEGA ENGINEERING, INC. All rights reserved. This document may not be copied, photocopied,

reproduced, translated, or reduced to any electronic medium or machine-readable form, in whole or in part, without
the prior written consent of OMEGA ENGINEERING, INC.

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