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SLAC National Accelerator Laboratory is operated by Stanford University for the Department of Energy. As a management and operating contractor, subcontracts awarded by the Laboratory are not Federal procurements, and are not directly subject to the Federal Acquisition Regulations in 48 CFR. Nonetheless, certain Federal laws, Executive Orders, and regulations may affect our DOE approved purchasing system, as required by statute, regulation, or contract terms and conditions.

The follow has been attached for you to complete and review:

1. (BAA) Buy American Act Certification


2. Representations & Certifications Rider


3. Confirm Attached SLAC terms are accepted: FP Commercial Supplies-Services T&Cs (August 2023)

Required item(s) listed below:

1. Flow Safe Spring Op. Relief Valve QTY: 1

P/N S84JE-02RF1-03RF1-SS-SS-TT

Body & Trim: SS

Inlet: 2” 150# RF-ANSI Flange

Outlet: 3” 150# RF-ANSI Flange

Seat: Teflon

Seals: Teflon

Set Point: 70 psig

Process: He gas @ -321

Functional Test Report, C of C

1. Flow Safe Spring Op. Relief Valve QTY: 1

P/N S84FD-15RF1-02RF1-SS-SS-TT

Body & Trim: SS

Inlet: 1 1/2” 150# RF-ANSI Flange

Outlet: 2” 150# RF-ANSI Flange

Seat: Teflon

Seals: Teflon

Set Point: 145 psig

Process: He gas @ -321

Functional Test Report, C of C

1. Flow Safe Spring Op. Relief Valve QTY: 1

P/N S841M-05RF2-05RF2-SS-SS-TT

Body & Trim: SS

Inlet: 1/2” 300# RF-ANSI Flange

Outlet: 1/2” 300# RF-ANSI Flange

Seat: Teflon

Seals: Teflon

Set Point: 320 psig

Process: H2 @131

Functional Test Report, C of C

1. Flow Safe Spring Op. Relief Valve QTY: 2

P/N S846B-15RF2-02RF2-SS-SS-TT

Body & Trim: SS

Inlet: 1 1/2” 300# RF-ANSI Flange

Outlet: 2” 150# RF-ANSI Flange

Seat: Teflon

Seals: Teflon

Set Point: 320 psig

Process: He gas @ -321

Functional Test Report, C of C

1. Flow Safe Spring Op. Relief Valve QTY: 1

P/N S848B-01RF2-01RF2-SS-SS-TT

Body & Trim: SS

Inlet: 1” 300# RF-ANSI Flange

Outlet: 1” 300# RF-ANSI Flange

Seat: Teflon

Seals: Teflon

Set Point: 320 psig

Process: He gas @ -428

Functional Test Report, C of C

1. Flow Safe Spring Op. Relief Valve QTY: 2

P/N S846B-15RF1-02RF1-SS-SS-TT

Body & Trim: SS

Inlet: 1 1/2” 150# RF-ANSI Flange

Outlet: 2” 150# RF-ANSI Flange

Seat: Teflon

Seals: Teflon

Set Point: 145 psig

Process: N2 gas @ -268

Functional Test Report, C of C \

1. Flow Safe Spring Op. Relief Valve QTY: 1

P/N S842M-34RF1-01RF1-SS-SS-TT

Body & Trim: SS

Inlet: 3/4” 150# RF-ANSI Flange

Outlet: 1” 150# RF-ANSI Flange

Seat: Teflon

Seals: Teflon

Set Point: 145 psig

Process: N2 gas @ -268

Functional Test Report, C of C

1. Flow Safe Spring Op. Relief Valve QTY: 1

P/N S841M-05RF2-05RF1-SS-SS-TT

Body & Trim: SS

Inlet: 1/2” 300# RF-ANSI Flange

Outlet: 1/2” 150# RF-ANSI Flange

Seat: Teflon

Seals: Teflon

Set Point: 320 psig

Process: He gas @ 131

Functional Test Report, C of C

1. Flow Safe Spring Op. Relief Valve QTY: 1

P/N S84HE-02RF1-03RF1-SS-SS-TT

Body & Trim: SS

Inlet: 2” 150# RF-ANSI Flange

Outlet: 3” 150# RF-ANSI Flange

Seat: Teflon

Seals: Teflon

Set Point: 75 psig

Process: He gas @ 80

Functional Test Report, C of C

1. Flow Safe Spring Op. Relief Valve QTY: 1

P/N S844B-34RF1-01RF1-SS-SS-TT

Body & Trim: SS

Inlet: 3/4” 150# RF-ANSI Flange

Outlet: 1” 150# RF-ANSI Flange

Seat: Teflon

Seals: Teflon

Set Point: 145 psig

Process: He gas @ -442

Functional Test Report, C of C

1. Flow Safe Spring Op. Relief Valve QTY: 1

P/N S84FD-15RF1-03RF1-SS-SS-TT

Body & Trim: SS

Inlet: 1 1/2” 150# RF-ANSI Flange

Outlet: 3” 150# RF-ANSI Flange

Seat: Teflon

Seals: Teflon

Set Point: 145 psig

Process: He gas @ 80

Functional Test Report, C of C

1. Flow Safe Spring Op. Relief Valve QTY: 1

P/N S84JE-02RF1-03RF1-SS-SS-TT

Body & Trim: SS

Inlet: 2” 150# RF-ANSI Flange

Outlet: 3” 150# RF-ANSI Flange

Seat: Teflon

Seals: Teflon

Set Point: 145 psig

Process: He gas @ 80

Functional Test Report, C of C

1. Flow Safe Spring Op. Relief Valve QTY: 1

P/N S843M-05RF2-05RF1-SS-SS-TT

Body & Trim: SS

Inlet: 1/2” 300# RF-ANSI Flange

Outlet: 1/2” 150# RF-ANSI Flange

Seat: Teflon

Seals: Teflon

Set Point: 320 psig

Process: He gas @ -442

Functional Test Report, C of C

1. Flow Safe Spring Op. Relief Valve QTY: 1

P/N S84GD-15RF1-03RF1-SS-SS-TT

Body & Trim: SS

Inlet: 1 1/2” 150# RF-ANSI Flange

Outlet: 3” 150# RF-ANSI Flange

Seat: Teflon

Seals: Teflon

Set Point: 145 psig

Process: He gas @ 80

Functional Test Report, C of C

1. Flow Safe Spring Op. Relief Valve QTY: 1

P/N S842M-01RF2-01RF2-SS-SS-TT

Body & Trim: SS

Inlet: 1” 300# RF-ANSI Flange

Outlet: 1” 300# RF-ANSI Flange

Seat: Teflon

Seals: Teflon

Set Point: 320 psig

Process: He gas @ -437

Functional Test Report, C of C

1. Flow Safe Spring Op. Relief Valve QTY: 1

P/N S854B-01MNO-01FNO-SS-SS-VT

Body & Trim: SS

Inlet: 1” MNPT

Outlet: 1” FNPT

Seat: Viton

Seals: Teflon

Set Point: 300 psig

Process: He gas @ 250

Functional Test Report, C of C

1. Flow Safe Spring Op. Relief Valve QTY: 1

P/N S854B-01RF2-01FNO-SS-SS-VT

Body: SS

Trim: SS

Inlet: 1” 300# RF-ANSI Flange

Outlet: 1” FNPT

Seat: Viton

Seals: Teflon

Set Point: 275 psig

Process: He gas @ 210

Functional Test Report, C of C

1. Flow Safe Spring Op. Relief Valve QTY: 1

P/N S858B-01RF1-01RF1-SS-SS-VT

Body: SS

Trim: SS

Inlet: 1” 150# RF-ANSI Flange

Outlet: 1” 150# RF-ANSI Flange

Seat: Viton

Seals: Teflon

Set Point: 150 psig

Process: Air @130

Functional Test Report, C of C

1. Flow Safe Spring Op. Relief Valve QTY: 2

P/N S846B-01FNO-01FNO-SS-SS-TT

Body & Trim: SS

Inlet: 1” FNPT

Outlet: 1” FNPT

Seat: Teflon

Seals: Teflon

Set Point: 75 psig

Process: He gas @ -445

Functional Test Report, C of C

1. Flow Safe Spring Op. Relief Valve QTY: 1

P/N S84GD-15FNO-02FNO-SS-SS-TT

Body & Trim: SS

Inlet: 1 1/2” FNPT

Outlet: 2” FNPT

Seat: Teflon

Seals: Teflon

Set Point: 45 psig

Process: He gas @ -447

Functional Test Report, C of C

Quote is for product only; no on-site services permitted.

Source selection will be based on Lowest Price and Technically Acceptable Method (LPTA).

Technical evaluation criteria are as follows:

1. Meets specified part numbers exactly (P/N)


2. Conforms to requested materials (e.g., Stainless Steel body & trim, Teflon/Viton seats and seals).


3. Meets ANSI flange or FNPT inlet/outlet connection specifications.


4. Valves must precisely match requested pressure set points (e.g., 70 psig, 145 psig, 320 psig).


5. Valves must be suitable for the specified gases and extreme temperature ranges (e.g., Helium at -321°F, Hydrogen at 131°F, Nitrogen at -268°F).


6. Includes Functional Test Reports.

Please provide a price and lead time quotation by COB 7/30/2025.

Please be advised that the requirement was also posted on SAM.gov.

Send quote to marissat@SLAC.stanford.edu.

The bid closing date for this requirement is 7/30/2025.

Is there any room for additional discount such as for Academic, ICPT, GSA, or Government Institutions?

If possible, please provide a link to your webpage for published price list to substantiate for the prices quoted.

• Buy American Act Certification (BAA) applies to awards that are over $10,000.


• Representations & Certifications Rider is required. Once completed the Reps and Certs is valid for one year until renewal. If you have already completed one within the year please disregard. Otherwise, please complete and return.


• All subcontractors are required to register in the System for Award Management (www.sam.gov).


• The resulting purchase order will be issued on a fixed price basis. SLAC National Accelerator Laboratory Terms and Conditions for Fixed Price Commercial Supplies and Services (Rev. August 2023) will be made a part of the resulting order.


• Payment Terms will be NET-30 (SLAC is unable to do advance payments and or Prepayments).


• Freight terms will be FOB Destination Prepaid and Add


• Foreign Vendors Shipments will be made CIP SLAC, Menlo Park, and Duty Unpaid.

You are requested to mark and identify proprietary/confidential information provided in response to the solicitation.

Contact me directly with any questions.

Kind regards,

Marissa Tanomrat

Procurement Commodities Team

SLAC National Accelerator Laboratory

2575 Sand Hill Road

Menlo Park, CA 94025

Email: marissat@slac.stanford.edu

Attachments/Links