1/2" FIP x 3/8" OD Compression Angle Stop Valve, Lead Free (Chrome Plated Brass)

Dahl 611-53-31 1/2" FIP x 3/8" OD Compression Angle Stop Valve (Lead-Free, Chrome/Plated Brass)

A lead-free, angle-pattern supply stop valve used to shut off water to individual fixtures such as faucets and toilets for service or replacement.

Key Features:

• 1/2" FIP inlet x 3/8" OD compression outlet, angle pattern, plated finish
• Product type: Supply Stop (manufacturer designation)
• Lead-Free Brass material (manufacturer specification)
• Inlet pipe type: Iron; outlet pipe type: Copper (manufacturer specification)
• Manufacturer statement: Every valve is tested before leaving the factory
• SupplyHouse Q&A states the internal parts (including the spindle and ball) are all brass

Compatibility & Applications:

• Manufacturer lists it as useful for plumbing, faucet, dishwasher, water filter, toilet, and bidet applications.
• Must only be used where the manufacturer specifies this exact part number: 611-53-31.

Installation & Operation Notes:

• Installation should be performed by a qualified plumber or installer familiar with stop valve replacement and local code requirements.
• Manufacturer instructions include:
• Turn off water supply, install product, then turn on water supply and check for leaks
• Abide by local plumbing codes
• Do not expose to corrosive agents
• NPT thread guidance: clean threads, use pipe dope or PTFE tape, tighten while gripping the hex on the valve; do not over-tighten
• Compression on copper pipe: do not use pipe dope or PTFE tape; pipe must be clean, de-burred, round, and cut square; tighten firmly with a small wrench; do not over-tighten
• Compression on plastic tube: follow the tube manufacturer's instructions; a special ring, nut, or insert may be required
• Reference the fixture and supply piping installation/service documentation for correct fit-up and shutoff verification.

Maintenance & Troubleshooting:

• Stop valves are commonly replaced when they leak, won't fully shut off, or are difficult to turn due to age/corrosion.
• Manufacturer guidance emphasizes checking for leaks after installation and avoiding exposure to corrosive agents.
• If a leak persists after installation, follow standard service practice and the manufacturer's thread/compression guidance (proper thread sealant use for NPT; proper copper preparation for compression).

Certifications & Compliance:

• Manufacturer lists the following for product #611-53-31:
• USA Patent
• CSA
• UPC
• NSF/ANSI/CAN 372
• NSF/ANSI/CAN 61: Q<_0.5

User Reviews & Q&A Summary:

• Review themes commonly describe the valve as high quality, smooth operating, and a step up from typical big-box stop valves, especially in terms of long-term reliability and shutoff performance.
• Several reviewers mention replacing multiple older shutoffs throughout a home after good experience with this model, and note it can be hard to find locally.
• Q&A guidance confirms the internal components (spindle and ball) are brass, which is commonly referenced by customers comparing durability to other valves.