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20AG100-4 — Technical Data Sheet

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— · 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

PARTS KIT,PRESSURE REGULATING VA. Key specifications include nonsupply_items_and_quantities: 43990 522-01 O-RING 1. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-908-9694, 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
20AG100-4
NSN: 4820-00-908-9694
FSC: 4820
CAGE: 43990 — NORGREN C A CO (USA)
SPECIFICATIONS
component_quantity7
supply_items_and_quantities1440-684-2332 PACKING,PREFORMED 1,4820-076-3891 DIAPHRAGM 1,6685-076-3890 SPRING 1,6685-076-3892 VALVE 1,5330-211-9951 PACKING,PREFORMED 1
nonsupply_items_and_quantities43990 522-01 O-RING 1
NSN4820-00-908-9694
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 20AG100-4 · 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
•
COMPONENT QUANTITY: 7
•
SUPPLY ITEMS AND QUANTITIES: 1440-684-2332 PACKING,PREFORMED 1,4820-076-3891 DIAPHRAGM 1,6685-076-3890 SPRING 1,6685-076-3892 VALVE 1,5330-211-9951 PACKING,PREFORMED 1
•
NONSUPPLY ITEMS AND QUANTITIES: 43990 522-01 O-RING 1
TECHNICAL CHARACTERISTICS (FLIS)
COMPONENT QUANTITY7
SUPPLY ITEMS AND QUANTITIES1440-684-2332 PACKING,PREFORMED 1,4820-076-3891 DIAPHRAGM 1,6685-076-3890 SPRING 1,6685-076-3892 VALVE 1,5330-211-9951 PACKING,PREFORMED 1
NONSUPPLY ITEMS AND QUANTITIES43990 522-01 O-RING 1
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
53-501Interchangeable
interchangeable cross-reference
interchangeable
CSB1-15Interchangeable
interchangeable cross-reference
interchangeable
MD550-01Interchangeable
interchangeable cross-reference
interchangeable
A-A-55456Interchangeable
interchangeable cross-reference
interchangeable
DC05111100234Interchangeable
interchangeable cross-reference
interchangeable
1295-0273564Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 20AG100-4?
20AG100-4 is a PARTS KIT,PRESSURE REGULATING VA.
What parts can replace 20AG100-4?
There are 6 known substitutes for 20AG100-4: 53-501, CSB1-15, MD550-01 and 3 more. Substitute compatibility should be verified for your specific system.
Is 20AG100-4 still available?
20AG100-4 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: September 2026