Beckett SPIRA-H24-34 Flexible Spring Circulator Coupling

Product Description

The BECKETT SPIRA-H24-34 is a flexible spring circulator coupling designed to connect a motor shaft to a circulator pump in hydronic heating systems. It absorbs minor shaft misalignment and dampens vibration between the motor and pump, reducing wear on bearings and mechanical seals. The coupling is rated for use with 1/2, 3/4, and 1 HP motors and accommodates clockwise (CW) rotation. It fits shaft combinations of 1/2 x 1/2, 1/2 x 5/8, and 5/8 x 5/8 inches. Licensed plumbers, hydronic heating technicians, and mechanical contractors typically install this part during pump motor replacement or coupling inspection service calls.

This coupling is suited for residential and light commercial hydronic heating applications where in-line circulators are used to move hot water through the distribution loop. It is manufactured by Westwood Products under the Spiralink product line and is intended for systems running CW-rotation motors in the 1/2 to 1 HP range. Its flexible spring design tolerates small angular and parallel shaft offsets without transmitting shock loads to pump components.

Key Features

• Flexible spring design absorbs vibration and minor shaft misalignment
• Fits three shaft size combinations: 1/2 x 1/2, 1/2 x 5/8, and 5/8 x 5/8 inches
• Rated for 1/2, 3/4, and 1 HP motors
• Clockwise (CW) rotation orientation
• Compatible with Taco 121-138 Series in-line circulators

Compatibility

Suitable for use with Taco 121-138 Series in-line circulators and 1/2, 3/4, and 1 HP motors. Accommodates shaft size combinations of 1/2 x 1/2, 1/2 x 5/8, and 5/8 x 5/8 inches with CW rotation.

Installation Notes

Installation is typically performed by a licensed plumber or hydronic heating technician. Shut down the boiler and isolate the circulator from system pressure before removing the existing coupling. Verify motor shaft rotation direction is CW before installing this coupling, and confirm shaft diameter matches one of the supported size combinations before proceeding. Follow all applicable local mechanical codes during service.

Technical Specifications

• Type: Flexible Spring Coupling
• Shaft Size Combinations: 1/2 x 1/2, 1/2 x 5/8, 5/8 x 5/8 inches
• Motor HP Rating: 1/2, 3/4, 1 HP
• Rotation: Clockwise (CW)
• Manufacturer: Westwood Products

Standard Information

• Brand: BECKETT
• Manufacturer Part Number: SPIRA-H24-34