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CUW1291 ✓ Verified by PartsTable
— · GATE VALVE
WHAT YOU NEED TO KNOW
Full open or full close only — never throttle Rising stem shows position visually
Throttling a gate valve erodes seats
PRODUCT OVERVIEW

The END SECTION,TERMINAL BOARD is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY STEM, stem_type: NONRISING, valve_size: 0.250 INCHES IN, bonnet_type: INSIDE SCREW, pressure_class: ERR-060, connection_type: THREADED INTERNAL PIPE. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-268-9151, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
CUW1291
NSN: 4820-00-268-9151
FSC: 4820
CAGE: 79172 — SIEMENS WATER TECHNOLOGIES CORP. DIV WALLACE & TIERNAN PRODUCTS (USA)
SPECIFICATIONS
materialCOPPER ALLOY STEM
stem_typeNONRISING
valve_size0.250 INCHES IN
bonnet_typeINSIDE SCREW
pressure_classERR-060
connection_typeTHREADED INTERNAL PIPE
special_featuresSOLID WEDGE; TAPERED SEAT
features_providedBONNET PACKING
nominal_thread_size0.250 INCHES IN
valve_operation_methodMANUAL
bonnet_attachment_methodTHREADED
thread_series_designatorNPT
NSN4820-00-268-9151
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: CUW1291 · OEM ⚠ VERIFY BEFORE ORDERING Gate valves = FULL OPEN or FULL CLOSE only — never throttle. Partial opening causes seat erosion and vibration. ✓ BROKER TIP Rising stem shows valve position visually — easier maintenance. Non-rising stem saves headroom. PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
FEATURES PROVIDED: BONNET PACKING
•
PRESSURE CLASS: ERR-060
•
STEM TYPE: NONRISING
•
INLET RELATIONSHIP WITH OUTLET: IDENTICAL
•
BONNET TYPE: INSIDE SCREW
•
MATERIAL: COPPER ALLOY 836 BODY
•
NOMINAL THREAD SIZE: 0.250 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
FEATURES PROVIDEDBONNET PACKING
PRESSURE CLASSERR-060
STEM TYPENONRISING
INLET RELATIONSHIP WITH OUTLETIDENTICAL
BONNET TYPEINSIDE SCREW
MATERIALCOPPER ALLOY 836 BODY
SPECIAL FEATURESSOLID WEDGE; TAPERED SEAT
NOMINAL THREAD SIZE0.250 INCHES IN
MAXIMUM OPERATING TEMP AND MEDIA FOR WHICH DESIGNED406.0 FAHRENHEIT STEAM AND 150.0 FAHRENHEIT WATER-OIL-GAS DEGF
MATERIAL DOCUMENT AND CLASSIFICATIONASTM B62 ASSN STD SINGLE MATERIAL RESPONSE BODY
VERIFIED SUBSTITUTES & CROSS-REFERENCES 29
0052049Interchangeable
interchangeable cross-reference
interchangeable
NU 306Interchangeable
interchangeable cross-reference
interchangeable
370Interchangeable
interchangeable cross-reference
interchangeable
TT5258Interchangeable
interchangeable cross-reference
interchangeable
438Interchangeable
interchangeable cross-reference
interchangeable
60-P-31-129Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is CUW1291?
CUW1291 is a END SECTION,TERMINAL BOARD.
What parts can replace CUW1291?
There are 29 known substitutes for CUW1291: 0052049, NU 306, 370 and 26 more. Substitute compatibility should be verified for your specific system.
Is CUW1291 still available?
CUW1291 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026