Skip to Main Content
Skip to Search
Skip to Search
Sustainability
Customer Support
Investors
Careers
United States
Products
Products
Plumbing & Flow Control Solutions
Plumbing & Flow Control Solutions
Automatic Control Valves
Automatic Control Valves
Backflow Preventers
Backflow Preventers
Gas Connection Systems
Gas Connection Systems
High Purity Process Piping Systems
High Purity Process Piping Systems
Hydronic & Steam Heating
Hydronic & Steam Heating
Mixing Valves
Mixing Valves
PEX Plumbing & Radiant Heating Systems
PEX Plumbing & Heating Systems
Pressure Reducing Valves
Pressure Reducing Valves
Relief Valves
Relief Valves
Risers
Risers
Shutoff Valves
Shutoff Valves
Strainers
Strainers
All Plumbing & Flow Control
All Plumbing & Flow Control
Water Quality Solutions
Water Quality Solutions
Conditioning Solutions
Conditioning Solutions
Disinfection Solutions
Disinfection Solutions
Filtration Solutions
Filtration Solutions
Instrumentation Solutions
Instrumentation Solutions
OneFlow Scale Prevention Solutions
OneFlow Scale Prevention Solutions
Rainwater Harvesting
Rainwater Harvesting
Water Quality Parts & Accessories
Water Quality Parts & Accessories
All Water Quality
All Water Quality
Drainage Solutions
Drainage Solutions
Stainless Steel Drainage (BLÜCHER)
Stainless Steel Drainage (BLÜCHER)
Chemical Waste Drainage (Orion)
Chemical Waste Drainage (Orion)
Specification Drainage
Specification Drainage
Cleanouts
Cleanouts
Dead Level Trench Drains
Dead Level Trench Drains
Fixture Carriers
Fixture Carriers
Floor & Area Drains
Floor & Area Drains
Green Roof Drains
Green Roof Drains
Interceptors
Interceptors
Parking Deck Drains
Parking Deck Drains
Roof Drains
Roof Drains
All Drainage
All Drainage
HVAC & Hot Water Solutions
HVAC & Hot Water Solutions
Boilers (AERCO)
Boilers (AERCO)
Water Heating Systems (Lync)
Water Heating Systems (Lync)
Controls
Controls
Floor Heating - Electric (SunTouch)
Floor Heating - Electric (SunTouch)
Floor Heating - Hydronic
Floor Heating - Hydronic
Heat Pumps (Lync)
Heat Pumps (Lync)
Heating Valves & Accessories
Heating Valves & Accessories
Snow Melting - Electric (SunTouch)
Snow Melting - Electric (SunTouch)
Snow Melting - Hydronic
Snow Melting - Hydronic
Water Heaters (AERCO)
Water Heaters (AERCO)
Water Heaters (PVI)
Water Heaters (PVI)
All HVAC & Hot Water
All HVAC & Hot Water
Solutions
Solutions
Solutions by Need
Solutions by Need
Smart & Connected
Smart & Connected
Safety & Regulation
Safety & Regulation
Energy Efficiency
Energy Efficiency
Water Conservation
Water Conservation
Comfort
Comfort
Sustainability
Sustainability
Footprint
Footprint
Handprint
Handprint
Product Transparency
Product Transparency
Channel Solutions
Channel Solutions
Wholesale
Wholesale
OEM
OEM
Retail
Retail
Systems
Systems
Drainage
Drainage
Fire Protection
Fire Protection
Gas Safety
Gas Safety
Irrigation
Irrigation
Radiant Heating Systems
Radiant Heating Systems
Rainwater Harvesting
Rainwater Harvesting
Snow Melting
Snow Melting
Ballast Water
Ballast Water
Battery Solutions
Battery Solutions
Data Center Solutions
Data Center Solutions
Healthcare Solutions
Healthcare Solutions
Hospitality Solutions
Hospitality Solutions
Legionella Solutions
Legionella Solutions
SemiConductor Solutions
SemiConductor Solutions
Training & Resources
Training & Resources
Education & Training
Education & Training
Instructor-led Training
Instructor-led Training
Watts Works Online Training
Watts Works Online Training
Continuing Education Courses
Continuing Education Courses
Learn and Win Sweepstakes
Learn and Win Sweepstakes
Resource Library
Resource Library
Specification Sheets
Specification Sheets
Installation Manuals
Installation Manuals
Videos
Videos
Case Studies
Case Studies
Catalogs
Catalogs
Price Lists
Price Lists
FAQs
Backflow Hub
Backflow Hub
Specification & Design
Specification & Design
SpecHUB
SpecHUB
ASSE Lookup
ASSE Lookup
BIM & CAD Drawings
BIM & CAD Drawings
MasterSpec Downloads
MasterSpec Downloads
tekmar Design Stencils
tekmar Design Stencils
Tools
Tools
Digital Mixing Savings Calculator
Digital Mixing Savings Calculator
Product Calculators
product-calculators
Product Cross-reference
Product Cross-reference
LoopCAD & RadiantWorks
LoopCAD & RadiantWorks
Selexit Online Configurator
Selexit Online Configurator
tekmar Product Comparison
tekmar Product Comparison
Installation
Installation
Operation
Operation
Planning
Planning
Repair/Replace
Repair/Replace
Our Brands
Our Brands
Our Company
Our Company
History
History
Sustainability
Sustainability
Company Logos
Company Logos
150th Celebration
150th Celebration
News & Events
News & Events
Our Brands
Our Brands
Watts
Watts
AERCO
AERCO
Ames Fire & Waterworks
Ames Fire & Waterworks
Apex
Apex
AVG
AVG
BLÜCHER
BLÜCHER
BLÜCHER U.S.
BLÜCHER U.S.
Bradley
Bradley
Dormont
Dormont
Enware
Enware
FEBCO
FEBCO
HF scientific
HF scientific
Josam
Josam
Mueller Steam Specialty
Mueller Steam Specialty
Nexa
Nexa
Orion
Orion
POWERS
POWERS
PVI Industries
PVI Industries
Leak Defense
Leak Defense
SunTouch
SunTouch
Syncta
Syncta
tekmar Control Systems
tekmar Control Systems
The Detection Group
The Detection Group
Lync
Lync
All Brands and Popular Watts Solutions
All Brands and Popular Watts Solutions
How to Buy
How to Buy
How Can We Help You?
How Can We Help You?
Looking for help with product questions, support or a quote?
Looking for help with product questions, support or a quote?
Find a Sales Representative
Find a Sales Representative
Looking for the nearest location to purchase Watts products and accessories?
Looking for the nearest location to purchase Watts products and accessories?
Locate a Distributor or Wholesaler
Locate a Distributor or Wholesaler
Search Watts
All Brands
Watts
Ames Fire & Waterworks
Dormont
FEBCO
HF scientific
Mueller Steam Specialty
Orion
Powers
tekmar
Search Watts
All Brands
Watts
Ames Fire & Waterworks
Dormont
FEBCO
HF scientific
Mueller Steam Specialty
Orion
Powers
tekmar
Products
Plumbing & Flow Control Solutions
Relief Valves
Temperature and Pressure Relief Valves
LL40XL
LL40XL-4 150/210 FS 3/4
Find a Sales Representative
Find a Wholesaler/Distributor
Customer Support
Share this Product
Build Your Spec in Under 5 Minutes
Learn More