Sioux Chief 525 Strong Arm Pipe Support with Dual LockBlocks

Sioux Chief 525 Strong Arm Pipe Support with Dual LockBlocks

The Sioux Chief 525 Strong Arm is a rough-in pipe support fitted with two LockBlocks, designed to rigidly secure CTS tube stub-outs behind the wall before drywall and fixture trim go on. This family is available in 1/2" and 3/4" pipe size versions, with the bracket design covering a shared 1/2" - 1" CTS stub-out range so plumbers can standardize on one support style across common supply and waste tube sizes found in residential and light commercial rough-in work. LockBlocks grip both the tube and the mounting bracket simultaneously when the screws are tightened, locking the stub-out in place and preventing all movement at the wall penetration. This is a true rough-in component, intended for installation inside the stud cavity or on the face of the stud, well before any finish plumbing or wall covering is installed. Whether the job calls for the 1/2" or 3/4" pipe size version, the Strong Arm delivers the same patented tube-locking performance across the full range.

Key Features

• Trade Size Range: Rigidly secures any 1/2" - 1" CTS stub-out and prevents all movement at the wall, with the Strong Arm available in 1/2" and 3/4" pipe size versions.
• Dual LockBlock Design: Two LockBlocks grip both tube and bracket when the mounting screws are tightened, eliminating the slop common with single-point hangers.
• L-Bend Mounting Option: L-bend brackets mount inside the stud cavity for a clean, recessed installation.
• Twisted Bracket Mounting Option: Twisted brackets mount to the face of the stud when a surface-mounted installation is preferred.
• Patented Design: Covered under Patent #8,061,390, reflecting Sioux Chief's engineered approach to tube stabilization.
• Packaging: Supplied 25 EA per package for stocking multiple rough-in points on a job.

Technical Specifications

• Product Type: Strong Arm Support
• Trade Size Range: 1/2" - 1" CTS
• Pipe Size Options: 1/2", 3/4"
• Patent: #8,061,390
• Packaging: 25 EA
• Country of Origin: United States

Typical Applications

• Residential and Commercial Rough-In Plumbing
• Securing CTS Supply Stub-Outs Inside Stud Walls
• Washing Machine and Fixture Stub-Out Stabilization
• New Construction Framing Stage Rough-In
• Renovation and Remodel Wall Openings

Why Sioux Chief?

Sioux Chief engineers rough-in hardware that solves real jobsite problems, and the patented LockBlock design of the Strong Arm 525 is built specifically to stop stub-out movement that leads to callbacks after drywall is hung. With both an L-bend and a twisted bracket mounting option, plumbers can choose the configuration that fits the framing on site, and the 25 EA packaging keeps multiple stub-outs stocked for a full rough-in day across both the 1/2" and 3/4" pipe size versions. It's a straightforward, purpose-built support for a problem every rough-in plumber has run into, backed by a patented design covered under Patent #8,061,390 rather than a generic bracket. Standardizing on the Strong Arm 525 across a crew's rough-in work means fewer callbacks, faster inspections, and stub-outs that stay put through drywall, trim, and fixture installation.