6 4000SS-DOSY-FS
Item Number: F0692723Brand - Ames
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- Size: 6 inch
- Weight: 514.0 lb
- Body Material: Stainless Steel
- Backflow Type: Reduced Pressure Zone
- Flood Sensor: SentryPlus Alert technology
- Shutoff Valves: Domestic OSY Resilient Seated Gate
- Maximum Working Pressure: 175 psi
- Lead Free Construction: Yes
- Approval: ASSE 1013
Description
Description
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This 6 inch Reduced Pressure Zone Backflow Preventer is designed for installation at cross-connections identified as health hazard applications to prevent backflow into potable water supplies.
The integrated flood sensor with SentryPlus Alert technology requires an add-on connection kit to become active and relay alerts. This kit is compatible with various systems:
- BMS (Building Management Systems)
- Cellular Network Communication
- Sensor Control Monitor for integration with BAS via RS-485 Modbus or the Nexa platform through Wi-Fi.
The assembly features flanged connections in accordance with AWWA Class D standards.

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Additional Details
This 6 inch stainless steel reduced pressure zone backflow preventer assembly is designed to prevent the reverse flow of contaminated water of non-potable quality into the potable water supply due to backsiphonage and backpressure.
It is ideal for protection at health hazard cross-connections and against other contaminants found at the service line entrance.
Features
- Features a flood sensor with SentryPlus Alert technology to detect continuous discharge from the relief valve.
- Requires an add-on sensor connection kit to activate the flood sensor and enable alerts.
- When paired with a connection kit, integrates with the Sensor Control Monitor to deliver maintenance alerts to BAS via RS-485 Modbus or the Nexa platform by Wi-Fi.
- Stainless steel body is half the weight of competitive designs, reducing installation and shipping costs.
- Includes domestic outside stem and yoke resilient seated gate valves.
- Cam-check assembly provides maximum flow at low pressure drop.
- Short end-to-end dimensions make retrofitting easy.
- No special tools required for servicing.
- Compact construction allows for smaller enclosures.
- Stainless steel relief valve features a balanced rolling diaphragm to eliminate sliding seals and lower maintenance costs.
- Lead Free* construction (wetted surfaces contain less than 0.25% lead by weight).
Specifications
General
- Assembly Size: 6 inch
- Product Type: Reduced Pressure Zone Backflow Preventer Assembly
- Body Material: 300 Series Stainless Steel
- Internal Metal Parts: 300 Series Stainless Steel
- Check Assembly Material: Noryl®
- Shutoff Valves: Domestic OSY Resilient Seated Gate Valves
- Flange Dimension Standard: AWWA Class D
- Temperature Range: 33°F - 110°F (0.5°C – 43°C)
- Maximum Working Pressure: 175 psi (12.1 bar)
- Lead Free: Yes (less than 0.25% lead by weight)
Dimensions (Nominal)
- Length (A): 48 1/2 in (1232 mm)
- C (OSY): 30 1/8 in (765 mm)
- D: 16 in (406 mm)
- G: 11 1/2 in (292 mm)
- L: 15 in (381 mm)
- M: 27 1/2 in (699 mm)
- N: 18 1/2 in (470 mm)
- P: 13 1/2 in (343 mm)
Weight
- Weight with Gates: 380 lb (172 kg)
- Weight without Gates: 110 lb (50 kg)
Certificates & Approvals
- ASSE: 1013
- CSA: B64.5
- UL: Classified
- FM: Approved
- AWWA: C511-92
FAQs
What is the primary purpose of the AMES 4000SS Reduced Pressure Zone Backflow Preventer?
What is the nominal size of this backflow preventer assembly?
What material is the main body of the 4000SS assembly constructed from?
How does the integrated SentryPlus Alert flood sensor function?
What is the maximum working pressure for this backflow preventer?
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