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A21701 — 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

The VALVE,SAFETY RELIEF is a the manufacturer industrial component. Key specifications include material: STEEL COMP 304, inside_diameter: 1.055 INCHES MINIMUM AND 1.060 INCHES MAXIMUM IN, outside_diameter: 1.250 INCHES NOMINAL IN, overall_thickness: 0.430 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-019-0477, 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
A21701
NSN: 4820-00-019-0477
FSC: 4820
CAGE: 58455 — SUPERIOR AIR PRODUCTS CO (USA)
SPECIFICATIONS
materialSTEEL COMP 304
inside_diameter1.055 INCHES MINIMUM AND 1.060 INCHES MAXIMUM IN
outside_diameter1.250 INCHES NOMINAL IN
overall_thickness0.430 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN
NSN4820-00-019-0477
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: A21701 · 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
•
VALVE DISCHARGE FLOW RATE: 35.0 CUBIC FEET PER MINUTE
•
THREAD SERIES DESIGNATOR: NPT FIRST END
•
STYLE DESIGNATOR: STRAIGHT THRU
•
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS: CLEANING IN ACCORDANCE WITH MIL-P-52211 /CE/
•
NOMINAL THREAD SIZE: 0.750 INCHES FIRST END IN
•
MATERIAL: COPPER ALLOY 836 BODY
•
OPERATING PRESSURE: 15.0 POUNDS PER SQUARE INCH (PSI) NOMINAL POWER DRIVE LBS
TECHNICAL CHARACTERISTICS (FLIS)
VALVE DISCHARGE FLOW RATE35.0 CUBIC FEET PER MINUTE
THREAD SERIES DESIGNATORNPT FIRST END
STYLE DESIGNATORSTRAIGHT THRU
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSCLEANING IN ACCORDANCE WITH MIL-P-52211 /CE/
NOMINAL THREAD SIZE0.750 INCHES FIRST END IN
MATERIALCOPPER ALLOY 836 BODY
OPERATING PRESSURE15.0 POUNDS PER SQUARE INCH (PSI) NOMINAL POWER DRIVE LBS
MATERIALCOPPER ALLOY FLOW CONTROL DEVICE
MATERIALSTEEL STEM
VALVE OPERATION METHODAIR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 1
A21701Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A21701?
A21701 is a VALVE,SAFETY RELIEF.
What parts can replace A21701?
There is 1 known substitute for A21701: A21701. Substitute compatibility should be verified for your specific system.
What is the NSN for A21701?
A21701 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-019-0477. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: August 2026