PartsTable
Technical Data Sheet
A420 ✓ 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,FOOT is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 OVERALL, first_end_style: CHAMFERED, surface_treatment: PASSIVATE OVERALL, pin_overall_length: 2.000 INCHES NOMINAL IN, pin_overall_diameter: 0.1240 INCHES NOMINAL IN, first_end_taper_angle: 45.0 DEGREES NOMINAL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-018-3077, 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
A420
NSN: 4820-00-018-3077
FSC: 4820
CAGE: 00299 — WS DARLEY & CO DIV OHLER PUMP (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OVERALL
first_end_styleCHAMFERED
surface_treatmentPASSIVATE OVERALL
pin_overall_length2.000 INCHES NOMINAL IN
pin_overall_diameter0.1240 INCHES NOMINAL IN
first_end_taper_angle45.0 DEGREES NOMINAL
first_end_taper_length0.010 INCHES NOMINAL IN
material_document_and_classificationASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
second_end_relationship_with_first_endIDENTICAL
NSN4820-00-018-3077
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS SIZE: — · — · — PN: A420 · 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: IRON CAST BODY
BODY STYLE: LOW OR MEDIUM PRESSURE (SCREWED)
MEDIA FOR WHICH DESIGNED: WATER, FRESH
FIRST END NOMINAL THREAD SIZE: 0.375 INCHES IN
END CONNECTION QUANTITY: 1
FIRST END STYLE DESIGNATOR: PLAIN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALIRON CAST BODY
MATERIALIRON CAST SEAT
BODY STYLELOW OR MEDIUM PRESSURE (SCREWED)
MEDIA FOR WHICH DESIGNEDWATER, FRESH
MATERIALSTEEL STEM
FIRST END NOMINAL THREAD SIZE0.375 INCHES IN
END CONNECTION QUANTITY1
FIRST END STYLE DESIGNATORPLAIN
FIRST END NOMINAL PIPE SIZE ACCOMMODATED3.000 INCHES IN
FIRST END THREAD CLASS3A A
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
A4-20Interchangeable
interchangeable cross-reference
interchangeable
16-739AInterchangeable
interchangeable cross-reference
interchangeable
S739Interchangeable
interchangeable cross-reference
interchangeable
16-739Interchangeable
interchangeable cross-reference
interchangeable
16719-00Interchangeable
interchangeable cross-reference
interchangeable
250122TYPE1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A420?
A420 is a VALVE,FOOT.
What parts can replace A420?
There are 11 known substitutes for A420: A4-20, 16-739A, S739 and 8 more. Substitute compatibility should be verified for your specific system.
Is A420 still available?
A420 is currently cancelled.
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