Jones Stephens 3 in. to 4 in. Lead Test Plug

Jones Stephens 3 in. to 4 in. Lead Test Plug is a purpose-built solution for sealing and testing within 3–4 inch piping networks. Designed to support lead-testing workflows, this plug combines a purpose-made lead composition with a careful low-lead content approach to meet safety and regulatory considerations while delivering a reliable, secure seal.

Key advantages you’ll notice in practice

• Size versatility: Fits 3" to 4" piping, providing a practical, single part for mid-sized plumbing runs.
• secure connection: End 1 features a 3" male pipe thread (MPT) for a dependable, standard-threaded interface with compatible fittings.
• Low-lead formulation: Average lead content is kept low to align with safety expectations for plumbing components used in testing environments.
• Distinctive color: Gray finish enhances visibility in assemblies, making inspection and identification easier during workflows.
• Professional packaging: Sold as a single unit per carton, ready for immediate use in field setups or work-in-progress projects.
• Trusted brand: Jones Stephens delivers reliable plumbing fittings and accessories with a focus on performance in testing and service scenarios.

Practical use cases

• Lead-testing workflows where isolating a pipe segment is needed to collect samples or verify lead presence without altering the flow elsewhere.
• Temporary isolation during maintenance, commissioning, or routine inspections on 3" to 4" piping networks.
• Field setups where a quick, threaded connection is required to secure a test configuration and prevent cross-contamination.

Installation and handling tips

• Ensure the 3" MPT end threads are clean and free of debris before installation to achieve a proper seal.
• Apply a compatible thread sealant or tape suitable for lead-containing components if your installation specs call for it, then snug the connection by hand and give a small amount of additional torque with a wrench—do not overtighten.
• Inspect the plug after installation for any sign of leakage or misalignment, and replace if the seal appears compromised.
• Store in a cool, dry place and protect the gray finish from abrasion to maintain visibility and identification in assemblies.

Who benefits most

• Professional plumbers and pipefitters conducting lead sampling or remediation projects.
• Municipal and utility workers performing pipe integrity tests on mid-sized distribution lines.
• Facility managers and inspectors who require a dependable, compliant plug for testing protocols in 3"–4" systems.

Why choose this lead test plug

With a focus on practical testing needs, the Jones Stephens Lead Test Plug emphasizes a low-lead content approach without sacrificing the reliability of a threaded 3" MPT connection. It’s a targeted, purpose-driven component designed to support accurate testing, safer handling, and efficient project progression in 3–4 inch piping applications.