Watts M518
Plumbing by Watts. Cut sheet, part numbers and a one-click submittal — indexed and ready in Submittal.app.
Watts Automatic Control Valve (Watts M Series Basic Valves). Model M518 / M1518. Full port dual chamber design with mechanical check feature; Two-piece telescoping disc and diaphragm assembly is the only moving part; Operating temperature up to 300°F (140°C) with EPDM elastomers; Available in Globe (M518) and Angle (M1518) patterns. material: Ductile Iron ASTM A536, 316 Stainless Steel Trim
Build a submittal around the Watts M518 in minutes — describe the job or paste your schedule and the agent pulls the current cut sheet into a formatted package you can share for review and get quoted, fast.
Product details
| Connection size | 2" to 16" |
|---|---|
| End connection | Threaded, Flanged, Grooved |
| Pressure Rating | 400 psi (Threaded/Grooved), 250 psi (150# Flanged), 400 psi (300# Flanged) |
| Flow Rate | 210-11100 GPM (Max Continuous); f |
Part numbers / catalog
How It Works
From schedule to submittal package in minutes, not days.
Describe your schedule
Paste a fixture schedule, upload a spec section, or just tell the Submittal Builder what the job calls for — catalog numbers, Watts M518 series, quantities.
AI matches products & assembles the package
The agent matches Watts M518 products from our indexed library, pulls the current cut sheets, and assembles a formatted submittal package with a cover page and table of contents.
Share for review
Send a review link to the design team or GC for sign-off — and when you're ready, roll the approved package into a quote or PO without retyping a part number.
Add the Watts M518 to a submittal
Describe the job and the AI agent builds the whole package — cut sheets pulled, schedule matched, cover and TOC included. Free to start.