PartsTable
Technical Data Sheet
X1679 ✓ 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 VALVE,STOP-CHECK is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 903 BODY, valve_size: 2.500 INCHES IN, bonnet_type: INSIDE SCREW, flange_shape: ROUND FIRST END, connection_type: FLANGE FIRST END, style_designator: STRAIGHT THRU FLANGED ENDS. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-202-6821, 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
X1679
NSN: 4820-00-202-6821
FSC: 4820
CAGE: 71905 — DERBYSHIRE MACHINE & TOOL CO (USA)
SPECIFICATIONS
materialCOPPER ALLOY 903 BODY
valve_size2.500 INCHES IN
bonnet_typeINSIDE SCREW
flange_shapeROUND FIRST END
connection_typeFLANGE FIRST END
style_designatorSTRAIGHT THRU FLANGED ENDS
mounting_positionHORIZONTAL OR VERTICAL
nominal_thickness0.938 INCHES FIRST END IN
flange_face_designPLAIN FIRST END
operating_pressure500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
flow_control_deviceDISK
face_to_face_distance12.500 INCHES IN
NSN4820-00-202-6821
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS SIZE: — · — · — PN: X1679 · 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
MATERIAL: COPPER ALLOY 903 BODY
NOMINAL OUTSIDE DIAMETER: 6.125 INCHES FIRST END IN
FLOW CONTROL DEVICE: DISK
CONNECTION TYPE: FLANGE FIRST END
VALVE SIZE: 2.500 INCHES IN
STYLE DESIGNATOR: STRAIGHT THRU FLANGED ENDS
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALCOPPER ALLOY 903 BODY
NOMINAL OUTSIDE DIAMETER6.125 INCHES FIRST END IN
FLOW CONTROL DEVICEDISK
CONNECTION TYPEFLANGE FIRST END
VALVE SIZE2.500 INCHES IN
MATERIALCOPPER ALLOY 903 FLOW CONTROL DEVICE
MATERIALNICKEL ALLOY 400 OR NICKEL ALLOY R-405 STEM
STYLE DESIGNATORSTRAIGHT THRU FLANGED ENDS
VALVE SIZE2.500 INCHES IN
OPERATING PRESSURE500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
S4824H3132363PIECE 6-7-20Interchangeable
interchangeable cross-reference
interchangeable
3600-120REVCPC6-7-20Interchangeable
interchangeable cross-reference
interchangeable
4824-3132363REVCPC6-7-20Interchangeable
interchangeable cross-reference
interchangeable
H112Interchangeable
interchangeable cross-reference
interchangeable
720-000165Interchangeable
interchangeable cross-reference
interchangeable
ASME B94.54Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is X1679?
X1679 is a VALVE,STOP-CHECK.
What parts can replace X1679?
There are 10 known substitutes for X1679: S4824H3132363PIECE 6-7-20, 3600-120REVCPC6-7-20, 4824-3132363REVCPC6-7-20 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for X1679?
X1679 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-202-6821. This indicates validated use in U.S. government and defense supply chains.
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