3 2000SS-OSY-TS
Item Number: 88003082
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Brand - Ames
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- Product Type: Double Check Valve Backflow Preventer Assembly
- Weight: 258.0 lb
- Nominal Size: 3 inch
- Main Valve Body Material: 300 Series Stainless Steel
- Maximum Working Pressure: 175 psi
- Temperature Range: 33°F - 110°F
- Lead Free: Yes
- Approvals: ASSE 1015, CULUS, FM, CSA B64.5, UL Certified
- Features: OSY Shutoffs with Tamper Switch
Description
Description
This 3 inch lead free double check valve backflow preventer assembly prevents reverse flow of polluted water in non-health hazard installations. Featuring a lightweight 300 Series stainless steel body, it offers long-term corrosion protection and maximum strength. It includes OSY shutoff valves with an integrated UL Certified supervisory tamper switch, cam-check valves for low head loss, and single top access for easy maintenance. Approved for horizontal or vertical flow-up installations, it has a maximum working pressure of 175 psi and operates between 33°F and 110°F. Item number 88003082.
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This double check valve assembly is designed for non-health hazard installations to prevent reverse flow of polluted water. It is approved for installation in both horizontal and vertical "flow up" positions, as certified by ASSE.

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Additional Details
This 3 inch lead free double check valve backflow preventer assembly is designed to prevent the reverse flow of polluted water from entering the potable water system, specifically for non-health hazard applications.
It is suitable for protection at cross-connections and other contaminants found at the service line entrance.
Features
- Cam-Check Assembly provides low head loss.
- Short lay length is 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.
- May be installed in horizontal or vertical "flow up" position (ASSE Only).
- Includes an integrated supervisory switch as an option on each gate valve of the OS&Y model.
Specifications
General
- Product Type: Double Check Valve Backflow Preventer Assembly
- Nominal Size: 3 inch
- Shutoff Valves: OSY (Outside Stem and Yoke) Resilient Seated Gate Valves
- Tamper Switch: Integrated Supervisory Switch
- Lead Free: Yes (Wetted surface contains less than 0.25% lead by weight)
Materials
- Main Valve Body: 300 Series Stainless Steel
- All Internal Metal Parts: 300 Series Stainless Steel
- Check Assembly: Noryl®
Performance
- Maximum Working Pressure: 175 psi (12.06 bar)
- Temperature Range: 33°F - 110°F (5°C - 43°C)
Certificates & Approvals
- ASSE 1015
- CULUS Classified (OSY ONLY)
- FM Approved (OSY ONLY)
- CSA B64.5
- UL Certified, Safety Signaling (Control No. 3L38) for integrated supervisory switch
- Flange Dimension Standard: AWWA C510-92
FAQs
What is the primary purpose of this backflow preventer?
This 3 inch lead-free double check valve assembly is designed to prevent the reverse flow of polluted water from entering the potable water system in non-health hazard installations.
What material is the main valve body made from?
The main valve body is constructed from 300 Series stainless steel, providing excellent corrosion resistance and maximum strength.
What are the installation requirements for this assembly?
This assembly can be installed in either a horizontal or vertical "flow up" position, as approved by ASSE. Local authority approval is required for non-health hazard installations.
Does this model include a tamper switch?
Yes, the OSY model includes an integrated supervisory switch on each gate valve, which is UL Certified for safety signaling (Control No. 3L38).
What are the maximum operating pressure and temperature limits?
The maximum working pressure is 175 psi (12.06 bar), and the temperature range is 33°F to 110°F (5°C to 43°C).