VIBRATION ISOLATING HANGER
Spring hangers under PTH-S Series consist of a rectangular steel box incorporated with a free standing, laterally stable steel spring with load transfer steel cup with rubber washer. PTH-SG Series is similar to PTH-S Series and have a noise absorbing rubber for better performance. Both designs permit installation in hanger rods or at the ceiling.
Model PTH-S are available with 25 mm and 50 mm deflection with standard load capacity from 25 Kgs to 1,050 Kgs. PTH-SG are available with load capacity up to 700 Kgs. PTH-S and SG Series are used to isolate suspended sources of both audible and inaudible noise and vibration. Suspended equipment such as in-line fans, cabinet fans, piping and ductworks close to mechanical equipment are typical uses of these two model series.
- Consider the height and location of the hanger and prepare the upper and lower hanging rod (bolt) in same proper length.
- Attach the upper hanging rod (bolt) to the ceiling.
- Connect the lower hanging rod (bolt) to the hanger. Precom-press the hanger spring element (Approx. 10mm) by tighten a restraint nut and washer at the bottom of the hanger.
- Attach the hanger to the upper hanging rod (bolt).
- Attach the haging rod (bolt) to the pipe, duct or equipment bracket.
- Install all other hangers by repeating instruction 1-5.
- After the pipe or equipment is filled with water, release the restraint nut. Levelling adjust the hanger by the nut at the top of the-element to obtain even level installation.
- Final check the spring hanger in a proper deflection and don’t install the hanging rod (bolt) in a inclined position.
PTH-G hangers consist of a noise absorbing rubber inserted with cast-in load transfer plate at the top and bottom, assembled in a rectangular steel box. PTH-G hangers are available in deflection maximum up to 6 mm with load capacities from 25 Kgs to 450Kgs. Double deflection model PTH-GG shall contain an additional molded rubber element at the top of hanger boxes. PTH-G and GG hangers are used to isolate audible frequency vibration from suspended equipment and noise in piping and ductwork systems. PTH-G and GG are normally selected when minimized initial costs are desired.