RFIs- Backflow Preventors - 10Sep26.xlsx
XLSX spreadsheet 18 KB Posted
- Attached to
- Backflow Preventer Upgrades
- Solicitation number
- W50S7X-26-Q-0010
- Issued by
-
Department of the Army National Guard
About this file
This is a Request for Information (RFI) document providing government responses to contractor questions regarding backflow preventer replacement work at McConnell Air Force Base, Kansas, under Solicitation W50S7X-26-Q-0010.
The RFI addresses five key inquiries from potential contractors. Question 1 provides manufacturer, model, and serial number details for five backflow preventer devices scheduled for replacement across Buildings 33, 44, 48, and 65, including a 6" Maxim 200 DC in Building 33, a 1" Watts 909 RPZ in Building 44 Room 118, a 4" Colt 200 DC in Building 44 Room 122, a 4" Colt 200 DC in Building 48, and a 2-1/2" Wilkins 350 DC in Building 65. Question 2 clarifies that contractors must unwire and rewire alarm tamper switches on existing backflow valves when needed, requiring 24-hour advance notice. Question 3 identifies the devices at Buildings 5 and 56 as Watts 1-1/2" and 1" 009M2 QT RP models respectively, with serial numbers 140892 and 277591. Question 4 confirms that the August 12 site visit materials satisfy the requirement to inspect site conditions, though contractors are welcome to conduct additional inspections of Buildings 5 and 56, and site pictures have been provided. Question 5 clarifies that the government accepts properly sized, code-compliant like-for-like or equivalent replacement backflow preventers meeting all SOW requirements, without specifying particular manufacturers or models.
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Text version
Sheet1
| Question | Response | ||
| 1 | The scope identifies the following: | ||
| • | Buildings 33 and 44, Room 122: Double Check Valve (DCV) | ||
| • | Building 44, Room 118, boiler makeup: Presumed Reduced Pressure Zone (RP) assemblyPlease provide the manufacturer, model, and serial number for each device scheduled for replacement, including the devices located in Buildings 48 and 65. | BLDG 33 South Bay, Fire Suppression |
6” Maxim 200 DC JC-0416
BLDG 44 Room 118 (East Mech Room), Boiler Makeup 1” Watts 909 RPZ 548898
BLDG 44 Room 122 (South Mech Room), Fire Suppression 4” Colt 200 DC EC-0652
BLDG 48 Fire Riser Room, Fire Suppression 4” Colt 200 DC EL-0865
BLDG 65 South Mech Room, Domestic Main 2-1/2” Wilkins 350 DC J22384
| 2 | At the walk through some backflows valves have alarm tamper switches. Is it the intenet of the governement to unwire them and wire the new ones once completed. | We will unwire and rewire these switches when needed. We do ask for a 24 hour notice for each occasion. |
| 3 | Please confirm whether the 1.5-inch backflow preventer at Building 5 is an RPZ or double-check valve. Could you also provide photos of the existing backflows at Buildings 5 and 56? | Building 5: Watts 1-1/2” 009M2 QT RP 140892 |
Building 56: Watts 1” 009M2 QT RP 277591
| 4 | SW 9 of the revised SOW requires the contractor to acknowledge that it has inspected and is fully cognizant of the site conditions. Since the August 12 site-visit materials do not appear to reflect Buildings 5 and 56, please confirm whether the prior organized site visit satisfies this requirement for the revised scope or whether a supplemental inspection/access opportunity is required or available. | The contractor is welcome to make a return visit to examine Buildings 5 and 56 but we are not requiring it as pics of these two devices are included in the posting |
| 5 | confirm whether a properly sized, code-compliant like-for-like/equivalent replacement meeting the revised SOW requirements is acceptable for each location. | We are not calling out a specific model or manufacturer. Please meet all requirements specified in the SOW |
File details come from the government source that posted it. Updated .