Tab 04 Statement of Work
Updated
A PDF document (134 KB) attached to Flowserve MKII control valve to replace obsolete Fischer control valve on Complex-41 GN2, from the National Aeronautics and Space Administration. Due Oct 27, 2026, 3:00 PM (UTC-5).
File name: SATPC0042860 Tab 04 SOW.pdf
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Procurement of CX-41 Flowserve MkII Control Valve
1.0 Background
The gaseous nitrogen (GN2) meter station used by United Launch Alliance (ULA) at Space Launch Complex 41 is in need of an overhaul due to parts obsolescence, corrosion, and design flaws. A new control valve is required to replace the current, obsolete valve. A Flowserve MkII control valve has been chosen to maintain parts commonality across the pipeline system.
2.0 Requirements
2.1. Flowserve MkII Control Valve
The Flowserve MkII control valve that is being ordered in this section shall meet the following requirements.
Description
Flowserve MkII 1” control valve
Quantity
2.1.1. The control valve should be a 1” size control valve and have the trim rated based on handling a processing fluid of GN2.
2.1.2. The control valve must be rated to handle 7,000 pounds per square inch gauge (PSIG).
2.1.3. The control valve must be able to regulate pressure downstream of the valve to 4,000-4,500 PSIG.
2.1.4. The control valve must connect to the 2” upstream XXS piping and 3” downstream XXS piping of the GN2 meter station via Grayloc heavy duty connectors.
2.1.5. The control valve must provide a flowrate of GN2 through the valve up to 6,800 standard cubic feet per minute (SCFM).
2.1.6. The control valve must have a 3800 series LOGIX digital positioner (Part Number: 3822-34ES-D43L-0110-00).
2.1.7. The control valve must have a Globe body type, pressure class of 4500, and have the body form fabricated.
2.1.8. The control valve body and bonnet material should be carbon steel. 2.1.9. The control valve plug, stem, seat ring, seat retainer, and upper/lower guides should be made of 316 stainless steel.
2.1.10. The control valve soft good and gaskets shall be compatible with the pressure rating.
2.1.11. The control valve actuator should be fail open and air to close. 2.1.12. The control valve positioner shall communicate with a highway addressable remote transducer (HART) standard signal of 4-20 milliamps (mA). 2.1.13. The control valve shall be coated to protect from corrosion. 2.1.14. The control valve should be visibly clean per IEST-STD-CC1246E.
Procurement of CX-41 Flowserve MkII Control Valve
3.0 Delivery
Ship to address:
NASA/KENNEDY SPACE CENTER
CENTRAL SUPPLY, BLDG. M6-0744
ORLANDO, FL 32899
ATTN: DAVID WHALEY (SI-D2)
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