USNS LUCY STONE (T-AO 209) LTFW BUTTERFLY VALVE SEAT

Amendment / Modification

This document is Amendment 0001 to Solicitation N3220526Q7050, originally dated 24 Mar 2026.

This amendment does not extend the hour and date specified for receipt of offers.

Bidders must acknowledge receipt of this amendment. Failure to do so may result in rejection of their offer. If a bidder wishes to change an offer already submitted, the change must be made by letter or electronic communication referencing the solicitation and this amendment, and must be received prior to the opening hour and date specified.

Form / Attachment / Pricing Sheet

This document is a drawing (Sheet 3 of 7) detailing the Low Temperature Fresh Water (LTFW) Cooling System SRD, specifically focusing on piping, valves, and instrumentation within the Main Machinery Room. It serves as a technical specification for components and their arrangement.

• Material Schedule: Lists various piping, fittings, and valves with their specifications, materials, sizes, and standards (e.g., ASTM, ASME). This includes details on carbon steel, stainless steel, and other alloys.
• System Components: Identifies and locates key equipment such as heat exchangers (LTFW COOLER), expansion tanks, and various types of valves (globe, check, gate, butterfly).
• Instrumentation: Details pressure and temperature transmitters, as well as alarms, with their respective functions, setpoints, and ranges (e.g., LTFW TEMPERATURE AT CHARGE AIR COOLER INLET).
• Piping and Drains: Outlines the routing of piping for different systems, including drains from machinery and preheaters, and connections for shore-based services.
• Diagrams: Includes schematic representations of the cooling loops, component interconnections, and flow paths.

This document is crucial for bidders involved in the procurement, installation, maintenance, or repair of marine cooling systems. It provides precise technical specifications for materials, components, and system design, enabling accurate bidding and execution of work related to the LTFW cooling system. Bidders can use this to understand the exact requirements for materials, valve types, instrumentation, and system layout.

Form / Attachment / Pricing Sheet

This document, an Excel spreadsheet named 'LTFW PART DESCRIPTIONS.xlsx', provides a detailed list of part numbers and their corresponding descriptions, primarily for seat valves. It serves as a reference for potential bidders to understand the specific components or materials required for the opportunity.

• PART#: Unique identifier for each component.
• DESCRIPTION: Detailed description of the part, including size and material (e.g., SEAT VALVE, 3 INCH (VITON)).
• BRAND/SEAL: Specifies the brand or seal type, often 'VITON'.
• MATERIAL: Indicates the material composition of the part (e.g., FKM, EPDM, VMQ, STAINLESS STEEL).
• PSI: Maximum pressure rating for the part.
• LEVER: Describes the actuation mechanism, typically 'LEVER' or 'SELF ACTUATING CHECK VALVE'.
• LEVER MATERIAL: Specifies the material of the lever component.

This attachment is crucial for bidders to identify the exact specifications of the seat valves required. It allows vendors to confirm their ability to supply the specified parts, understand material and performance requirements (like pressure ratings and seal types), and accurately price their proposals. The detailed part numbers and descriptions are essential for procurement and ensuring compliance with the opportunity's technical requirements.

Solicitation / RFP / RFQ

This solicitation is for the procurement of butterfly valve seats for the USNS LUCY STONE (T-AO 209). The requirement is for Low-Temperature Fresh Water (LTFW) butterfly valve seat replacement.

• The primary deliverable is butterfly valve seats made of VITON material.

• Specific sizes required include 3-inch, 4-inch, 6-inch, 2.5-inch, 10-inch, 14-inch, and 16-inch.

• Brand name "VITON" is specified, and no substitutions are allowed.

• The solicitation references an "Other than Full and Open Memo" for brand name requirements.

• The contract type is Firm Fixed Price for all items.

• Delivery is expected on or before July 1, 2026.

• FOB Destination.

• The offer due date is April 3, 2026, at 02:00 PM.

• Quotes must be submitted via email to the contracting officer and contract specialist listed in block 9 of the SF1449.

• Accepted formats for quotes are Adobe or Microsoft Office.

• Evaluation will be based on the lowest priced technically acceptable quoter.

• Technical acceptability requires that quoted parts meet solicitation requirements, including delivery dates and part numbers.

• Vendor's standard commercial terms and conditions may be considered a material defect and lead to rejection.

• This acquisition is set aside for Small Business.

• The North American Industry Classification Standard (NAICS) code is 332911, with a size standard of 750.

• The solicitation incorporates FAR clauses 52.212-1, 52.212-4, and 52.212-5 by reference.

• Specific DFARS clauses are also incorporated by reference and in full text, including those related to Wide Area WorkFlow (WAWF) payment instructions and critical safety items.

• Duty-free entry is required for this material.

• Packaging and marking must comply with DODMANUAL 4140.01 and MIL-STD-129R.

Other / Unclassified

This document is a "Memorandum for the Record" dated February 11, 2026, justifying the use of other than full and open competition for an acquisition under the simplified acquisition threshold. It specifies the product as VITON LTFW Butterfly Valve Seat Replacements, intended for material purchase for USNS Lucy Stone FY26 PSA - WI-551. The required delivery date is July 1, 2026, with a period of performance from October 12, 2026. The justification for sole-source procurement is based on standardization, as per COMSCINST 4790.3, to maintain fleet configuration baseline. The specific make and model required is VITON, and it is noted that other vessels, such as the USNS Robert F. Kennedy (T-AO 208), use this make/model.

This document is relevant to potential bidders as it indicates a sole-source procurement for specific valve seat replacements. Bidders who can supply VITON brand valve seat replacements and meet the specified delivery and performance period may be eligible to participate, depending on the specific contracting approach. The justification highlights the importance of standardization for fleet maintenance, which is a key consideration for this acquisition.