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GW/BAW Seal Brochure

GW/BAW Seal Brochure

Product catalog summary

Overview: This document provides technical specifications and guidelines for Flowserve's GW and BAW liquid mechanical seals used in integrally geared API pumps and compressors, suitable for high-speed and high-pressure services.

GW Seals: Originating from the Flowserve GW gas seal, these are flat-faced, hydraulically balanced, OD-pressurized, stationary multi-spring pusher end face mechanical seals. They are compatible with all integrally geared API pumps and can be assembled in single, dual unpressurized, and dual pressurized arrangements. Key recommendations include:

Standard balance liquid GW for fluids with specific gravity between 0.60 and 1.50.
High balance liquid GWQ for light ends with specific gravity between 0.30 and 0.60.
Liquid lube groove GWW for hot water services up to 338°F (170°C) without external cooling.

Materials of Construction for GW Seals:

Metal Components: Stainless Steel
Rotating Face: Tungsten Carbide
Stationary Face: Resin Carbon or Metallized Carbon
Springs: Alloy C-276
Secondary Seals: Fluoroelastomer, Perfluoroelastomer, PTFE/Elgiloy Tec-ring

Operating Parameters for GW Seals:

Pressures: Up to 675 psi (46.6 bar)
Temperatures: -46°F to 400°F (-43°C to 204°C)
Shaft Speeds: Up to 18,000 rpm
Specific Gravity: 0.30 to 1.50
Available Sizes: 1.250” and 1.500”

BAW Seals: These are flat-faced, hydraulically balanced, stationary metal bellows end face mechanical seals. They are suitable for use in all integrally geared API pumps and can be assembled in single, dual unpressurized, and dual pressurized arrangements. BAW seals are ideal for:

Processes with extreme temperatures unsuitable for standard elastomeric O-rings.
Fluids containing particles that block axial travel of dynamic elastomeric O-rings.
Fluids that tend to coke, crystallize, polymerize, or scale.

Materials of Construction for BAW Seals:

Metal Components: Stainless Steel, Alloy C-276, engineered materials
Stationary Face: Resin Carbon or Metallized Carbon
Rotating Face: Tungsten Carbide
Bellows: Alloy C-276
Secondary Seals: Fluoroelastomer, Perfluoroelastomer, Graphite

Operating Parameters for BAW Seals:

Pressures: Typically up to 400 psi (27.6 bar), up to 800 psi (55.2 bar) with approval
Temperatures: -150°F to 650°F (-101°C to 343°C)
Shaft Speeds: Up to 17,000 rpm
Specific Gravity: 0.55 to 1.20
Available Sizes: 1.250” and 1.500”

Disclaimer: The information is for informational purposes only and should not be considered certified or as a guarantee of satisfactory results. The purchaser/user is responsible for the proper selection, installation, operation, and maintenance of Flowserve products.

GW/BAW Seal Brochure

GW/BAW Seal Brochure

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