3 3000SS-OSY-GPM
Item Number: 0690484Brand - Ames
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- Size: 3 inch
- Weight: 268.0 lb
- Body Material: 300 Series Stainless Steel
- Maximum Working Pressure: 175 psi
- Temperature Range: 33°F – 110°F
- Installation: Horizontal or Vertical "flow up"
- Includes: Gallon per minute meter (GPM)
- Approvals: ASSE 1048, FM Approved, UL Classified
- Features: Low head loss Cam-Check Assembly
Description
Description
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Installation & Compatibility
- This 3 inch Double Check Detector Backflow Preventer is designed specifically for installation on fire protection systems to prevent contamination of the potable water supply.
- It features flanged inlet gate connections and flanged outlet gate connections for secure piping integration.
- The assembly includes OSY (Outside Stem and Yoke) resilient seated gate valves and captured spring check valves, which should be considered when connecting to the system.
- It can be installed in either a horizontal or vertical "flow up" position, providing versatility for various site layouts.
- For proper installation, consult local water authority, building, and plumbing codes to ensure compliance.

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Additional Details
This 3 inch double check detector backflow preventer assembly is designed to prevent the reverse flow of fire protection substances and non-potable quality water from being pumped or siphoned into the potable water supply.
It is ideal for protection at cross-connections identified as non-health hazards, such as on fire protection systems and from other contaminants found at the service line entrance, in accordance with national plumbing codes and water authority requirements.
Features
- Lightweight stainless steel body and compact construction allow for smaller vaults and enclosures, reducing installation and shipping costs.
- Single top access cover with a two-bolt grooved style coupling for ease of maintenance; no special tools are required for servicing.
- Cam-Check Assembly valve provides low head loss and features an internally loaded design for positive drip-tight closure.
- Includes a 5/8 inch x 3/4 inch bronze meter (gpm) to detect underground leaks and unauthorized water use.
- Features OSY (Outside Stem and Yoke) resilient seated gate valves and captured spring check valves, along with four test cocks.
- Can be installed in either a horizontal or vertical "flow up" position.
- Stainless steel construction provides long-term corrosion protection and maximum strength.
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 standard material product, consult your local water authority, building and plumbing codes.
Specifications
- Product Type: Double Check Detector Backflow Preventer Assembly
- Size: 3 inch
- Model: 3000SS-OSY-GPM
- Body Material: 300 Series Stainless Steel
- Internal Metal Parts: 300 Series Stainless Steel
- Check Assembly Material: Noryl®
- Gate Valves: OSY Resilient Seated
- Check Valves: Captured Spring Check Valves
- Meter: 5/8 inch x 3/4 inch Bronze (Gallons Per Minute)
- Installation Position: Horizontal or Vertical "flow up"
- Lead Content (Wetted Surface): Less than 0.25% by weight
Pressure & Temperature
- Maximum Working Pressure: 175 psi (12 bar)
- Temperature Range: 33°F – 110°F (0.5°C – 43°C)
Dimensions (3 inch)
- Overall Length (A): 38 in (965 mm)
- OSY Shutoff (C): 18 7/8 in (479 mm)
- Meter Width (D): 3 3/4 in (95 mm)
- Open Height (G): 10 in (250 mm)
- Distance Between Flanges (L): 22 in (559 mm)
- Height to Top of Handwheel (P): 13 in (330 mm)
Weight (3 inch)
- Net Weight (With Gates): 235 lb (106 kg)
- Net Weight (Without Gates): 70 lb (32 kg)
Certificates & Approvals
- ASSE 1048
- AWWA C510-92
- CSA B64.5
- UL 1469
- UL Classified (OSY only)
- FM Approved (sizes 2 1/2 inch – 10 inch, OSY only)
- USC Foundation for Cross-Connection Control and Hydraulic Research