StayTite® Swivel Joint | HMT Tank

Product Overview

Jump to: BenefitsDesign Features

The StayTite® Swivel Joint is a rugged, central-type swing joint designed for reliable operation in petroleum and petrochemical storage tanks. Its balanced design and heavy-duty construction provide long service life and trouble-free operation for floating suction/skimmer applications on floating and cone roof tanks.

The central-type design balances fluid thrust compared to elbow-style joints, helping eliminate swing joint lock-up and bending of the tank nozzle. A large bearing area provides reliable, easy operation, while the unobstructed flow passage allows liquid to move freely through the joint.

Each StayTite Swing Joint is hydrostatically tested to 40 PSI to ensure a mechanically sound and leak-tight assembly. Available in sizes from 4" to 30", the StayTite can also be configured with optional Ni-Resist™ bushings, epoxy coatings, and application-specific O-ring materials for demanding service conditions.

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Benefits

Balanced, reliable operation

The central-type design balances fluid thrust compared to elbow-style joints, helping eliminate swing joint lock-up and reduce bending loads on the tank nozzle.

Rugged construction and long service life

The StayTite is constructed from four major components: a cast iron U-shaped yoke, specially manufactured tee, two bronze or Ni-Resist™ bushings, and nitrile O-ring seals. The robust design is engineered for long-term, trouble-free service.

Large, unobstructed flow passage

The joint provides a flow passage larger than standard pipe and contains no interior obstructions to restrict liquid flow. Its large bearing area also supports reliable and easy operation.

Leak-tight performance

Every StayTite Swing Joint is hydrostatically tested to 40 PSI to verify a mechanically sound and leak-tight assembly.

Corrosion-resistant options

Optional Ni-Resist™ bushings, epoxy coatings, and specialized O-ring materials are available for demanding applications, including jet fuel storage and prolonged salt-water exposure.

Maintenance

Routine maintenance is not required. However, the swing joint should be inspected each time the tank is opened.

Design Features

Central-type designPrecision-aligned rotating teeLarge flow passageOptional Ni-Resist™ bushingsOptional epoxy coatingApplication-specific O-rings

Central-type design

The StayTite's central-type configuration balances fluid thrust and helps prevent the lock-up and nozzle bending associated with elbow-style swing joints. Cast-in lugs on the bottom of the yoke provide centering for optional pipe supports.

Precision-aligned rotating tee

The flanged tee is precision aligned and rotates on large stationary bronze or Ni-Resist™ bushings hydraulically pressed into the yoke. The bushings are mechanically locked into the yoke and allow bi-directional flow.

Large flow passage

The passage through the StayTite is larger than standard pipe and contains no interior obstructions that could block liquid flow.

Optional Ni-Resist™ bushings

Ni-Resist™ bushings provide corrosion resistance and are recommended for jet fuel storage tanks, applications where construction standards prohibit copper alloys, and prolonged exposure to salt water.

Optional epoxy coating

An epoxy-coated yoke and tee meets MIL-C-4556E standards required for U.S. jet fuel storage tanks per FAA Advisory Circular No. 150/5230-4. Epoxy coating is also recommended for prolonged exposure to salt water.

Application-specific O-rings

Special High ACN Nitrile O-rings are available for MTBE concentrations up to 100%. Viton® (FKM) O-rings are recommended for gasoline when MTBE concentrations do not exceed 25%, with other O-ring materials also available.

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StayTite® Swivel Joint StayTite® Swivel Joint | Floating Suction & Skimmer