Flowserve DHTW/UHTW Pusher Seal

Product Brand

Flowserve

Type

Mechanical Seals

SubType

Pusher Seals

About this product

DHTW and UHTW pusher-type mechanical seals are custom engineered to deliver exceptional reliability in high energy, critical pumping applications. DHTW and UHTW seals are balanced, flexible stator cartridge seals available in single or dual seal configurations.

Features and Benefitss

Unmatched performance and extended seal life derived from FEA-designed seal faces that boast zero net deflection from thermal, hydraulic, and dynamic forces
Superior high temperature, slow roll, and hot standby operation enabled by high performance circulating features the deliver optimum cooling at all operating speeds
Reliable operation in high speed services achieved via precisely controlled seal face balance ratio
Withstands torque from high viscosity fluids and high speeds with robust drive engagement
Extended equipment uptime with available secondary containment options

Specifications

Pressure: up to 207 bar (3000 psi)

Temperature: -40 to 371°C (-40 to 700°F)

Speed: up to: 76 m/s (250 fps)

Sizes: 25.4 to 228.6 mm (1.000 to 9.000 inch)

Configurations

Arrangement 1 single seal (Common Piping Plans 11, 13, 32, 62) UHTW

Arrangement 1 single seal (Piping Plan 23) DHTW

Arrangement 2 unpressurized dual wet seal (Common Piping Plans 52) UHTW/DHTW

Arrangement 2 unpressurized dual seal with dry running backup (Common Piping Plans 72, 75, 76) UHTW/GSLW

Arrangement 3 pressurized dual wet seal (Common Piping Plans 53A, 53B, 53C) DHTW/DHTW

Arrangement 3 pressurized dual wet seal (Piping Plan 54) UHTW/UHTW

Industries

Power

Nuclear
Conventional Steam

Oil & Gas

Upstream Exploration & Production
Midstream Transportation
Downstream Processing