PartsTable
Technical Data Sheet
559B-2M-15 ✓ 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

CYLINDER ASSEMBLY,ACTUATING,LINE. Key specifications include material: COPPER ALLOY OVERALL, connection_type: THREADED EXTERNAL PIPE FIRST END, connection_style: PLAIN (PIPE) FIRST END, special_features: POP-OFF TYPE, style_designator: STRAIGHT THRU NOTE: TO BE USED FOR VALVE BODIES OF ONE SECTION ONLY., thread_direction: RIGHT-HAND FIRST END. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-976-0348, 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
559B-2M-15
NSN: 4820-00-976-0348
FSC: 4820
CAGE: 91816 — CIRCOR AEROSPACE, INC. DBA CIRCOR AEROSPACE INC (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
connection_typeTHREADED EXTERNAL PIPE FIRST END
connection_stylePLAIN (PIPE) FIRST END
special_featuresPOP-OFF TYPE
style_designatorSTRAIGHT THRU NOTE: TO BE USED FOR VALVE BODIES OF ONE SECTION ONLY.
thread_directionRIGHT-HAND FIRST END
surface_treatmentCHROMIUM LOCATION NOT OTHERWISE SPECIFIED
operating_pressure200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
disk_loading_methodSPRING
flow_control_devicePOPPET
nominal_thread_size0.250 INCHES FIRST END IN
maximum_operating_temp250.0 FAHRENHEIT SINGLE RESPONSE DEGF
NSN4820-00-976-0348
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS SIZE: — · — · — PN: 559B-2M-15 · 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
DISK LOADING METHOD: SPRING
CONNECTION STYLE: PLAIN (PIPE) FIRST END
MEDIA FOR WHICH DESIGNED: AMMONIA, LIQUID THIRD RESPONSE
THREAD DIRECTION: RIGHT-HAND FIRST END
CONNECTION TYPE: THREADED EXTERNAL PIPE FIRST END
TECHNICAL CHARACTERISTICS (FLIS)
DISK LOADING METHODSPRING
CONNECTION STYLEPLAIN (PIPE) FIRST END
MEDIA FOR WHICH DESIGNEDAMMONIA, LIQUID THIRD RESPONSE
MEDIA FOR WHICH DESIGNEDAIR SECOND RESPONSE
MEDIA FOR WHICH DESIGNEDACETYLENE FIRST RESPONSE
THREAD DIRECTIONRIGHT-HAND FIRST END
MEDIA FOR WHICH DESIGNEDGAS, INERT FOURTH RESPONSE
CONNECTION TYPETHREADED EXTERNAL PIPE FIRST END
MEDIA FOR WHICH DESIGNEDHYDROGEN FIFTH RESPONSE
STYLE DESIGNATORSTRAIGHT THRU NOTE: TO BE USED FOR VALVE BODIES OF ONE SECTION ONLY.
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
11779Interchangeable
interchangeable cross-reference
interchangeable
114D179-14Interchangeable
interchangeable cross-reference
interchangeable
1503-16Interchangeable
interchangeable cross-reference
interchangeable
J517Interchangeable
interchangeable cross-reference
interchangeable
11779-24Interchangeable
interchangeable cross-reference
interchangeable
559B-6M-35Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 559B-2M-15?
559B-2M-15 is a CYLINDER ASSEMBLY,ACTUATING,LINE.
What parts can replace 559B-2M-15?
There are 7 known substitutes for 559B-2M-15: 11779, 114D179-14, 1503-16 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 559B-2M-15?
559B-2M-15 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-976-0348. This indicates validated use in U.S. government and defense supply chains.
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