Holdrite 280 Variable Closure Clamp 1 to 2 Inch Acoustic

Product Description

The HOLDRITE 280 is a variable closure pipe clamp designed to acoustically isolate piping from building structures across a pipe size range of 1 inch to 2 inches. It functions by dampening vibration and noise transfer at the point where pipe meets framing, hangers, or structural members. This type of product is found in residential and light commercial plumbing, HVAC piping, and mechanical systems where noise control between floors or through walls is a priority. Licensed plumbers and mechanical contractors install this clamp during rough-in or retrofit work wherever code or building specs call for acoustic separation between pipe and structure.

The HOLDRITE 280 is suited for interior piping installations where noise transmission through building assemblies is a concern. Typical applications include multi-unit residential construction, hotels, hospitals, and commercial buildings where sound attenuation between occupied spaces is required. The variable closure design accommodates pipe sizes from 1 inch through 2 inches, making it adaptable across common pipe sizes used in domestic water, drain, waste, and vent systems, as well as HVAC hydronic piping runs.

Key Features

• Variable closure design fits pipe sizes from 1 inch to 2 inches
• Engineered for acoustic isolation to dampen noise transfer between pipe and structure
• Reduces vibration transmission into floors, walls, and framing members
• Suited for use in multi-unit residential and light commercial mechanical systems

Compatibility

Designed as an OEM-style acoustic isolation clamp for residential and commercial piping systems with pipe outside diameters ranging from 1 inch to 2 inches, including common DWV and domestic water supply applications.

Installation Notes

Installation is typically performed by a licensed plumber or mechanical contractor. Shut off water supply and depressurize the line before repositioning any existing pipe supports. Follow local plumbing codes and manufacturer guidance for hanger spacing and clamp placement. Do not overtighten the closure, as compressing the isolation material excessively can reduce acoustic performance.

Technical Specifications

• Pipe Size Range: 1 inch to 2 inches
• Application: Acoustic pipe isolation

Standard Information

• Brand: HOLDRITE
• Manufacturer Part Number: 280