Omega Products PS-2D Installation Manual

PS Series

Pressure Snubbers

Materials of Construction

Housings: 303 Stainless Steel
Porous Discs: 316 Stainless Steel

OMEGA®Snubbers are available in other shapes, sizes,
threads and materials on special order. Prices quoted on
application.

Maximum Pressure Ratings:

* Porosity Grade D, E or G.

Porous Element Snubbers
Used As A Flow Restrictor

Because OMEGA

®

Porous Metal Snubbers are capable of
precise flow control, it is possible to use them as flow
restrictors or bleed controls.

If the snubber is to be used as a flow controller, it is
recommended that the snubber be protected by a suitable
filter to prevent change in flow characteristics as a result of
the collection of random entrained solids on the porous
element.

Instructions For Use Of Porous Element
Pressure Snubbers

The accompanying porosity recommendations will
accommodate approximately 85% of all pressure sensitive
device applications. For violently surging or pulsing systems,
the next finer porosity snubber may be indicated. If the
instrument seems to be sluggish or to lack responsiveness to
transient pressure changes within the system, the next more
porous snubber should be substituted. Consistency of
performance from one snubber to another of the same
porosity is guaranteed.

All industrial type snubbers are equipped with dry-seal type
pipe threads. If possible, the snubber should be assembled to
the system without the use of pipe joint compound or other
similar material. If pipe joint compound is used, extreme care
should be taken to prevent coating the porous element with
the compound. If pipe joint compound is necessary, it is
strongly advised that one of the solid resinous types of
compound be used. Teflon®plastic tape is suggested as being
the most efficient of these materials.

Teflon®is a registered trademark of DuPont.

Cleaning Instructions

All snubbers may be washed in solvents such as carbon
tetrachloride, benzine, naphtha, etc. Where chemical cleaning
is required, boiling in any of the following solutions will be
found effective, depending on which solution the
contaminant is most soluble in:

Stainless Steel: 15% caustic soda (1 part soda; 6 parts water)

or 15% nitric acid (1 part acid; 6 parts water).
Boil 15 to 45 minutes.

After boiling, wash snubber in running tap water for
approximately 45 minutes. DO NOT FORCE TAP WATER
THROUGH THE SNUBBER AS THIS WILL PLUG IT.

NOTE

This envelope contains a

POROUS METALLIC PRESSURE SNUBBER

Material: Stainless Steel

Catalog No. Thread Size Pressure Rating

PS-8*

1

⁄8" x 1⁄8" NPT

PS-8*-M

1

⁄8" x 1⁄8" BSPT 5,000 PSI

PS-8*-MG

1

⁄8" x 1⁄8" G

PS-4*

1

⁄4" x 1⁄4" NPT

PS-4*-M

1

⁄4" x 1⁄4" BSPT 10,000 PSI

PS-4*-MG

1

⁄4" x 1⁄4" G

PS-2*

1

⁄2" x 1⁄2" NPT

PS-2*-M

1

⁄2" x 1⁄2" BSPT 10,000 PSI

PS-2*-MG

1

⁄2" x 1⁄2" G

Recommended Porosity

Porosity Porosity Cap CFH@ Type of

Designation Opening mm (in) 1-PSI -Diff. Usage

Mean Max.

Pressure

0.0635 0.1270

Oil (Heavy

D

(0.0025) (0.0050)

6.5 225 to 500
S. S. U.)

0.0330 0.0635

Water and

E (0.0013) (0.0025) 3.0

Light Oils

30 to 25

S. S. U)

0.0102 0.0025

Air or

G

(0.0004) (0.0001)

1.1 Other

Gases

INSTRUCTION

SHEET

M1180/0107

Shop online at: omega.com e-mail: [e-mail]
For latest product manuals: omegamanual.info

A

A

B

B

F

F

42°

POROUS

DISC

POROUS
DISC

REFERENCE DIMENSIONS

PHYSICAL PROFILE FOR

PS-8D, -8E, -8G

PS-2D, -2E, -2G
PS-8D-M, -8E-M, -8G-M
PS-2D-M, -2E-M, -2G-M

PS-8D-MG, -8E-MG, -8G-MG
PS-4D-MG, -4E-MG, -4G-MG
PS-2D-MG, -2E-MG, -2G-MG

PRESSURE SNUBBERS

D

D

E (THREADS)

E (THREADS)

PS-2D-MG, -2E-MG, -2G-MG

32 mm

19 mm

17 mm

32 mm

19 mm

17 mm

1 1/4"

3/4"

5/8"

2 5/32"

1 15/32"

1 3/16"

1 3/16"

1 3/16"

2 5/32"

2 5/32"

1 15/32"

1 15/32"

1/4"

3/16"

3/16"

3/16"

1/4"

1/4"

1/4"

1/4"

1/4"

31/32"

31/32"

31/32"

21/32"

21/32"

21/32"

1 1/4"

1 1/4"

1 1/4"

1/2–14 G

1/4–19 G

1/8–28 G

1/2–14 BSPT

1/4–19 BSPT

1/8–28 BSPT

1/2 NPT

1/8 NPT

1/4 NPT

1"

1"

1"

11/16"

11/16"

11/16"

29/64"

29/64"

29/64"

PS-4D-MG, -4E-MG, -4G-MG

PS-8D-MG, -8E-MG, -8G-MG

PS-2D-M, -2E-M, -2G-M

PS-4D-M, -4E-M, -4G-M

PS-8D-M, -8E-M, -8G-M

PS-2D, -2E, -2G

PS-4D, -4E, -4G

PS-8D, -8E, -8G

PART

NUMBER

DIM. A

HEX SIZE

DIM. B

LENGTH

DIM. C

DIA.

THRU

DIM. D
BODY

LENGTH

DIM. F

INTERNAL MIN

DIA. DEPTH

DIM. E EXTERNAL/

INTERNAL

THREADS

OMEGA

PS-2D

OMEGA

PS-4D

PHYSICAL PROFILE FOR

PS-4D, -4E, -4G

PS-4D-M, -4E-M, -4G-M

o

C

o

C

Servicing North America:

U.S.A.: One Omega Drive, Box 4047

ISO 9001 Certified Stamford, CT 06907-0047

Tel: [phone]
FAX: [phone]
e-mail: [e-mail]

Canada: 976 Bergar

Laval (Quebec) H7L 5A1, Canada
Tel: [phone]
FAX: [phone]
e-mail: [e-mail]

For immediate technical or application assistance:

U.S.A. and Canada: Sales Service: 1-800-826-6342/1-800-TC-OMEGA

®

Customer Service: 1-800-622-2378/1-800-622-BEST

®

Engineering Service: 1-800-872-9436/1-800-USA-WHEN

®

Mexico: En Espan˜ol: [phone]-7803

FAX: [phone]
e-mail: [e-mail]
[e-mail]

Servicing Europe:

Czech Republic: Frystatska 184, 733 01 Karvina´, Czech Republic

Tel: [phone]
FAX: [phone]
Toll Free: 0800-1-66342
e-mail: [e-mail]

Germany/Austria: Daimlerstrasse 26, D-75392 Deckenpfronn, Germany

Tel: [phone]
FAX: [phone]
Toll Free in Germany: 0800 639 7678
e-mail: [e-mail]

United Kingdom: One Omega Drive, River Bend Technology Centre

ISO 9002 Certified Northbank, Irlam, Manchester

M44 5BD United Kingdom
Tel: [phone]
FAX: [phone]
Toll Free in United Kingdom: 0800-488-488
e-mail: [e-mail]

OMEGAnet®On-Line Service Internet e-mail

omega.com [e-mail]

FOR W

ARRANTY

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 2007 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.

WARRANTY/ DISCLAIMER

OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for a period of 13 months from
date of purchase. OMEGA’s WARRANTY adds an additional one (1) month grace period to the normal one (1) 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 in which wear is not warranted,
include but are 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 the company will be as specified and free of defects. OMEGA MAKES NO OTHER WARRANTIES
OR REPRESENTATIONS OF ANY KIND WHATSOEVER, EXPRESSED 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.

It is the policy of OMEGA Engineering, Inc. 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, human applications.