4 3000SS-OSY-TS-GPM
Item Number: 88003094Brand - Ames
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- 4 Inch (1016 mm) Double Check Detector Assembly
- Weight: 344.0 lb
- Main Body Material: 300 Series Stainless Steel
- Maximum Working Pressure: 175 PSI
- Integrated UL Certified Tamper Switch (Control No. 3L38)
- Equipped with Gallon Per Minute Meter
- Low Head Loss Cam-Check Valves
- Approved for Horizontal or Vertical Flow-Up Installation
- Certifications: ASSE 1048, AWWA C510-92, CSA B64.5, UL 1469
Description
Description
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Connections
- This backflow preventer features OSY (Outside Stem and Yoke) resilient seated gate valves with flanged connections for secure installation into fire protection systems.
- The integrated supervisory switch ensures signaling when the valve position changes, enhancing system monitoring.
- It can be installed in a horizontal or vertical "flow up" position (ASSE Only).

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Additional Details
This 4 inch AMES 3000SS Double Check Detector Backflow Preventer Assembly is designed to prevent the reverse flow of fire protection system substances and non-potable quality water from being pumped or siphoned into the potable water supply. It is ideal for protecting cross-connections identified as non-health hazards, such as fire protection systems and other service line contaminants.
This compact and modular assembly features OSY (Outside Stem and Yoke) shutoffs, a UL Certified Safety Signaling (Control No. 3L38) supervisory switch, captured spring Cam-Check valves, and a gallon per minute meter for leak detection.
Features
- Cam-Check Assembly valve provides low head loss
- Short lay length ideally suited for retrofit installations
- Stainless steel body is half the weight of competitive designs, reducing installation and shipping cost
- Stainless steel construction provides long term corrosion protection and maximum strength
- Single top access cover with two-bolt grooved style coupling for ease of maintenance
- No special tools required for servicing
- Compact construction allows for smaller vaults and enclosures
- Furnished with a gallon per minute meter to detect underground leaks and unauthorized water use
- Can be installed in horizontal or vertical "flow up" position (ASSE Only)
- Includes an integrated supervisory switch on each gate valve of the OS&Y model (UL Certified, Safety Signaling, Control No. 3L38)
It is illegal to use this product in any plumbing system providing water for human consumption, such as drinking or dishwashing, in the United States. Before installing, consult your local water authority, building, and plumbing codes.
Specifications
- Size: 4 inch
- Main Valve Body Material: 300 Series stainless steel
- Internal Metal Parts Material: 300 Series stainless steel
- Check Assembly Material: Noryl® Flange
- Check Valves: Independently operating, spring loaded Cam-Check
- Meter: Gallon per minute (GPM)
- Supervisory Switch: Integrated UL Certified, Safety Signaling (Control No. 3L38) on OS&Y gate valves
- Maximum Working Pressure: 175 psi (12 bar)
- Temperature Range: 33°F – 110°F (0.5°C – 43°C)
- Installation: Horizontal or vertical "flow up" position (ASSE Only)
- Overall Length (A): 40 inches (1016 mm)
- Net Weight (With Gates): 245 lbs (111 kg)
Certificates & Approvals
- ASSE 1048
- AWWA C510-92
- CSA B64.5
- UL 1469
- UL Classified (OSY only)
- FM Approved (sizes 2 1/2" – 10", OSY only)
- USC Foundation for Cross-Connection Control and Hydraulic Research