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803-5001003-M742 — ADAPTER,STRAIGHT,FLANGE TO TUBE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

803-5001003-M742: ADAPTER,STRAIGHT,FLANGE TO TUBE.

ADAPTER,STRAIGHT,FLANGE TO TUBE. Key specifications include material: PLASTIC POLYTETRAFLUOROETHYLENE SEAT, valve_size: 1.500 INCHES IN, flange_shape: ROUND WITH HOLES ALL ENDS, connection_type: FLANGE ALL ENDS, style_designator: CROSS FLANGED ENDS, nominal_thickness: 0.802 INCHES ALL ENDS IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-122-5513, 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
803-5001003-M742
NSN: 4820-01-122-5513
NIINs: 011225513, 011914234
FSC: 4820 — Valves, Nonpowered
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialPLASTIC POLYTETRAFLUOROETHYLENE SEAT
valve_size1.500 INCHES IN
flange_shapeROUND WITH HOLES ALL ENDS
connection_typeFLANGE ALL ENDS
style_designatorCROSS FLANGED ENDS
nominal_thickness0.802 INCHES ALL ENDS IN
bolt_hole_quantity6 ALL ENDS
flange_face_designRECESSED WITH GASKET GROOVE ALL ENDS
operating_pressure700.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
recess_nominal_depth0.212 INCHES ALL ENDS IN
face_to_face_distance3.500 INCHES IN
valve_operation_methodMANUAL
NSN4820-01-122-5513
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 803-5001003-M742 · 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
•
CRITICALITY CODE JUSTIFICATION: ZZZY
•
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS: QUALITY CONTROL IN ACCORDANCE WITH NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS
TECHNICAL CHARACTERISTICS
CRITICALITY CODE JUSTIFICATIONZZZY
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSQUALITY CONTROL IN ACCORDANCE WITH NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS
SUBSTITUTES & CROSS-REFERENCES 1
803-5001003-M742L1Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 803-5001003-M742?
803-5001003-M742 is a ADAPTER,STRAIGHT,FLANGE TO TUBE.
What parts can replace 803-5001003-M742?
There is 1 known substitute for 803-5001003-M742: 803-5001003-M742L1. Substitute compatibility should be verified for your specific system.
What is the NSN for 803-5001003-M742?
803-5001003-M742 is cataloged in the U.S. Government catalog under NSN 4820-01-122-5513. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.