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28898-3 — VALVE,REGULATING,FLUID PRESSURE

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

28898-3: VALVE,REGULATING,FLUID PRESSURE.

VALVE,REGULATING,FLUID PRESSURE. Key specifications include filter: NOT INCLUDED, material: STEEL CORROSION RESISTING BODY, body_style: TEE, regulation_type: AUTOMATIC SINGLE STAGE, flow_control_device: POPPET, valve_loading_method: SPRING. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-545-4963, 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
28898-3
NSN: 5330-00-545-4963
NIINs: 005454963, 011418607
FSC: 5330 — Packing and Gasket Materials
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
filterNOT INCLUDED
materialSTEEL CORROSION RESISTING BODY
body_styleTEE
regulation_typeAUTOMATIC SINGLE STAGE
flow_control_devicePOPPET
valve_loading_methodSPRING
outlet_pressure_range150.0 TO 850.0 CAMERA MOUNT
end_connection_quantity3
media_for_which_designedGAS, NONCORROSIVE AND LIQUID, NONCORROSIVE
first_end_connection_typeTHREADED INTERNAL PIPE
first_end_style_designatorPLAIN
first_end_thread_directionRIGHT-HAND
NSN5330-00-545-4963
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 28898-3 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
FSC APPLICATION DATA: ENGINE,AIRCRAFT,TURBOJET
•
CROSS-SECTIONAL SHAPE STYLE: PLAIN KEYSTONE, STRAIGHT RADII FACE
•
OUTSIDE DIAMETER: 7.058 INCHES NOMINAL IN
•
JOINT STYLE: VERTICAL JOINT
•
RADIAL WALL THICKNESS: 0.1800 INCHES MINIMUM AND 0.1900 INCHES MAXIMUM IN
•
RING STYLE: EXPANDING CONCENTRIC
•
SURFACE TREATMENT: CHROMIUM OVERALL
TECHNICAL CHARACTERISTICS
FSC APPLICATION DATAENGINE,AIRCRAFT,TURBOJET
OVERALL WIDTH0.1220 INCHES MINIMUM AND 0.1240 INCHES MAXIMUM IN
CROSS-SECTIONAL SHAPE STYLEPLAIN KEYSTONE, STRAIGHT RADII FACE
OUTSIDE DIAMETER7.058 INCHES NOMINAL IN
JOINT STYLEVERTICAL JOINT
RADIAL WALL THICKNESS0.1800 INCHES MINIMUM AND 0.1900 INCHES MAXIMUM IN
RING STYLEEXPANDING CONCENTRIC
SURFACE TREATMENTCHROMIUM OVERALL
MATERIALIRON OVERALL
METALLIC HARDNESS RATING97.0 MINIMUM ROCKWELL B AND 104.0 MAXIMUM ROCKWELL B
SUBSTITUTES & CROSS-REFERENCES 1
156472Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 28898-3?
28898-3 is a VALVE,REGULATING,FLUID PRESSURE.
What parts can replace 28898-3?
There is 1 known substitute for 28898-3: 156472. Substitute compatibility should be verified for your specific system.
What is the NSN for 28898-3?
28898-3 is cataloged in the U.S. Government catalog under NSN 5330-00-545-4963. This indicates validated use in U.S. government and defense supply chains.
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