GW/BAW Seal Brochure - FLOWSERVE - #2

Flow Solut

BAW seals

The Flowserve BAW liquid seals are traditional, flat-faced, hydraulically balanced, stationary metal bellows end face mechanical seals run against a hard carbide rotor. API 682 refers to this as a Type C seal. The bellows convolutions provide the spring force orienting the faces to each other while also acting as the secondary sealing component. The BAW liquid seals can be used in all integrally geared API pumps and assembled in any of the standard sealing arrangements: single, dual unpressurized, and dual pressurized. Additionally, a BAW single seal can be "backed up" by a gas seal for light hydrocarbon service or a conventional GW liquid seal using an API Plan 52 buffer fluid system to allow for use in higher temperature services. The liquid BAW seals are commonly applied when process fluids have the following characteristics:

- When the process temperature is too low or too high for standard elastomeric O-rings.

- The process fluid contains particles that can block axial travel of the dynamic elastomeric O-rings used in spring pusher seal designs.

- The process fluid tends to coke, crystallize, polymerize, or scale.

Materials of Construction

• Metal Components: Stainless Steel, Alloy C-276, engineered materials

• Stationary Face:

• Rotating Face:

• Bellows:

• Secondary Seals:

Resin Carbon or Metallized Carbon Tungsten Carbide Alloy C-276

Fluoroelastomer,

Perfluoroelastomer, Graphite

Operating Parameters

• Pressures:

To 400 psi (27.6 bar) typical To 800 psi (55.2 bar) with engineering approval -150° F to 650° F (-101° C to 343° C)

To 17,000 rpm

0.55 to 1.20 1.250" and 1.500"

• Temperatures:

• Shaft Speeds:

• Specific Gravity:

• Available Sizes:

Note: For materials and conditions not listed, contact your local representative.

The information and specifications presented in this product brochure are believed to be accurate, but are supplied for information purposes only and should not be considered certified or as a guarantee of satisfactory results by reliance thereon. Nothing contained herein is to be construed as a warranty or guarantee, express or implied, with respect to the product. Although Flowserve Corporation can provide general application guidelines, it cannot provide specific information for all possible applications. The purchaser/user must therefore assume the ultimate responsibility for the proper selection, installation, operation and maintenance of Flowserve products. Because Flowserve Corporation is continually improving and upgrading its product design, the specifications, dimensions and information contained herein are subject to change without notice.

Primary Worldwide Flow Solutions Division Locations United States Canada

Licensees, authorized agents, and affiliated companies located worldwide. Argentina Australia

Villa Martelli Marayong NSW

Phone 54-11-4709-6800 Phone 61-2-8822-7100 Fax 54-11-4709-7072 Fax 61-2-9679-7511

Netherlands

Roosendaal

Phone 31-165-581400

Fax 31-165-552622

Kalamazoo, MI Edmonton, Alberta

Phone 269-381-2650 Phone 780-463-7958 Fax 269-381-8368 Fax 780-450-1241

Scarborough, Ontario Phone 416-292-2877 Fax 416-292-5190

Singapore

Phone 65-746-4318 Fax 65-747-1963

Mexico

Tlaxcala

Phone 52-2-461-6791 Fax 52-2-461-6847

Brazil

Sao Paulo

Phone 55-11-4066-8600 Fax 55-11-4066-7014

Japan

Germany

Dortmund

Phone 49-231-6964-0 Fax 49-231-6964-248

Osaka

Phone 81-720-85-5571

Fax 81-720-85-5575

www.flowserve.com

ISO 9000

REV 4/02 USA Printed in USA

FSD168

Certified