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20F-21N — VALVE,GATE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

20F-21N: VALVE,GATE.

The VALVE,GATE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY STEM, stem_type: RISING, valve_size: 2.000 INCHES IN, bonnet_type: OUTSIDE SCREW-YOKE, flange_diameter: 6.000 INCHES IN, features_provided: BONNET PACKING. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-062-4078, 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
20F-21N
NSN: 4820-00-062-4078
FSC: 4820 — Valves, Nonpowered
CAGE: 82430 — AMERICAN VALVE MFG CO (USA)
SPECIFICATIONS
materialCOPPER ALLOY STEM
stem_typeRISING
valve_size2.000 INCHES IN
bonnet_typeOUTSIDE SCREW-YOKE
flange_diameter6.000 INCHES IN
features_providedBONNET PACKING
bolt_hole_quantity4
flange_face_designPLAIN
face_to_face_distance7.000 INCHES IN
valve_operation_methodMANUAL
end_item_identificationLOGISTICS SUPPORT VESSEL
bonnet_attachment_methodBOLTED
NSN4820-00-062-4078
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 20F-21N · 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
•
INLET RELATIONSHIP WITH OUTLET: IDENTICAL
•
FLANGE FACE DESIGN: PLAIN
•
MAXIMUM OPERATING TEMP AND MEDIA FOR WHICH DESIGNED: 450.0 FAHRENHEIT STEAM AND 150.0 FAHRENHEIT WATER-OIL-GAS DEGF
•
OPERATING PRESSURE AND TYPE: 125.0 POUNDS PER SQUARE INCH (PSI) STEAM MAXIMUM REQUIRED AND 200.0 POUNDS PER SQUARE INCH (PSI) WATER AND OTHER LIQUIDS MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS
•
STEM TYPE: RISING
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM B-62 ASSN STD SINGLE MATERIAL RESPONSE SEAT
TECHNICAL CHARACTERISTICS
INLET RELATIONSHIP WITH OUTLETIDENTICAL
FLANGE FACE DESIGNPLAIN
MAXIMUM OPERATING TEMP AND MEDIA FOR WHICH DESIGNED450.0 FAHRENHEIT STEAM AND 150.0 FAHRENHEIT WATER-OIL-GAS DEGF
OPERATING PRESSURE AND TYPE125.0 POUNDS PER SQUARE INCH (PSI) STEAM MAXIMUM REQUIRED AND 200.0 POUNDS PER SQUARE INCH (PSI) WATER AND OTHER LIQUIDS MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS
STEM TYPERISING
MATERIAL DOCUMENT AND CLASSIFICATIONASTM B-62 ASSN STD SINGLE MATERIAL RESPONSE SEAT
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A-126 CLASS B ASSN STD SINGLE MATERIAL RESPONSE BODY
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A-126 CLASS B ASSN STD SINGLE MATERIAL RESPONSE DISK
MATERIAL DOCUMENT AND CLASSIFICATIONASTM B-584 ALLOY 875 ASSN STD SINGLE MATERIAL RESPONSE STEM
VALVE SIZE2.000 INCHES IN
SUBSTITUTES & CROSS-REFERENCES 2
625Reference document
Same NSN cross-reference
Reference document — Secondary reference
G623Reference document
Same NSN cross-reference
Reference document — Design control — primary 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 20F-21N?
20F-21N is a VALVE,GATE.
What parts can replace 20F-21N?
There are 2 known substitutes for 20F-21N: 625, G623. Substitute compatibility should be verified for your specific system.
What is the NSN for 20F-21N?
20F-21N is cataloged in the U.S. Government catalog under NSN 4820-00-062-4078. This indicates validated use in U.S. government and defense supply chains.
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