A1-Minimum Salient Characteristics.pdf
PDF 88 KB Posted
- Attached to
- Backflow Preventer Assemblies
- Solicitation number
- M0068126Q0096
- Issued by
-
United States Marine Corps
About this file
This document is a Minimum Salient Characteristics specification for backflow-prevention assemblies required by Marine Corps Air Station's Installation, Logistics and Environmental Department to comply with Arizona Department of Environmental Quality (ADEQ) cross-connection-control and backflow-prevention requirements under Arizona Administrative Code R18-4-215.
The contractor shall provide backflow-prevention assemblies meeting four primary requirements: (1) regulatory compliance with ADEQ standards; (2) appropriate protection levels based on hazard assessment, including Reduced Pressure Principle (RP) assemblies for actual or potential health hazards involving chemical, biological-process-water, or contamination hazards; Pressure Vacuum Breaker (PVB) assemblies for irrigation systems without backpressure or chemical injection; and Double Check Valve (DC) assemblies where hazard levels permit; (3) sizing and connections matching existing piping and system flow requirements with specific approved models listed by pipe diameter ranging from ½" to 6", including products from manufacturers Zurn-Wilkins, Apollo, FEBCO, and Watts with designated dimensional types; and (4) corrosion-resistant materials suitable for outdoor installation and potable-water service, with all components contacting potable water meeting applicable safe-drinking-water material requirements. The document provides a comprehensive list of 17 approved assembly configurations with corresponding dimension types referenced in attachments.
View the file
Other files
| File | Type | Posted |
|---|---|---|
| D1-M0068126Q0096.pdf | ||
| A1-B Backflow Spec sheets.pdf | ||
| A1-Series 957RP Watts.pdf | ||
| A1-Exhibit A-54 BACKFLOW ORDER.pdf | ||
| A1-Series 009RP Watts.pdf |
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Text version
DISTRIBUTION: DoW COMMUNITY ONLY
Minimum Salient Characteristics — Backflow-Prevention Assemblies
Marine Corps Air Station, Installation, Logistics and Environmental Department has a requirement to replace Backflow Preventers to comply with Arizona Department of Environmental Quality (ADEQ) cross-connection-control and backflow-prevention requirements under Arizona Administrative Code R18-4-215.
The contractor shall provide backflow-prevention assemblies that meet the following minimum salient characteristics:
1. Regulatory Compliance: Assemblies shall comply with applicable Arizona Department of Environmental Quality (ADEQ) cross-connection-control and backflow-prevention requirements under Arizona Administrative Code R18-4-215.
2. Required Protection Level: The assembly type shall provide the level of protection required for the identified cross-connection hazard and installation location:
• Reduced Pressure Principle (RP) Assembly: Required where the downstream system presents an actual or potential health hazard, including chemical, biological-process-water, or other contamination hazards.
• Pressure Vacuum Breaker (PVB) Assembly: Permitted only for irrigation systems that cannot create backpressure and do not use chemical injection or chemigation.
• Double Check Valve (DC) Assembly: Permitted only where the assessed hazard level and applicable water-system requirements allow its use.
3. Size and Connections: Assemblies shall be sized to match the existing piping and system flow requirements: [insert pipe diameter, connection type, flow rate, and pressure rating]. The assembly shall be compatible with the existing potable-water distribution system without requiring unplanned adapters or modifications:
• ½” 375XLRP Zurn-Wilkins, Dimensions Type “A” – see attachment
• ¾” 375XLRP Zurn-Wilkins, Dimensions Type “A” – see attachment
• 1” 375XLRP Zurn-Wilkins, Dimensions Type “A” – see attachment
• 1” RPLF4A Apollo, Dimensions Type “B” – see attachment
• 1” 975XLRP Zurn-Wilkins, Dimension Type “C” – see attachment
• 1-1/2”375XLRP Zurn-Wilkins, Dimension Type “A” – see attachment
• 1-1/2”975XLRP Zurn-Wilkins, Dimensions Type “C” – see attachment
• 2”375XLRP Zurn-Wilkins, Dimensions Type “A” – see attachment
• 2”825YRP FEBCO, Dimensions Type “D” – see attachment
• 2”765PVB FEBCO, Dimensions Type “E” – see attachment
• 2”975XLRP Zurn-Wilkins, Dimensions Type “C” – see attachment
DISTRIBUTION: DoW COMMUNITY ONLY
• 2-1/2”009RP Watts, Dimensions Type “F” – see attachment
• 3” 009RP Watts, Dimensions Type “F” – see attachment
• 4” 709DC Watts, Dimensions Type “I” – see attachment
• 4” 957RP Zurn-Wilkins, Dimensions Type “H” – see attachment
• 4” 375ARP Zurn-Wilkins, Dimensions Type “G” – see attachment
• 6” 375XLRP Zurn-Wilkins, Dimensions Type “J” – see attachment
4. Materials and Construction: Assemblies shall be constructed of corrosion-resistant materials suitable for outdoor installation and potable-water service.
Components in contact with potable water shall meet applicable safe-drinking-water material requirements.
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