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Technical Data Sheet
PartsTable / COMPONENT / 34447B
34447B ✓ 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 STEM,VALVE,EXPANSION is a the manufacturer industrial component. Key specifications include general_characteristics_item_description: 0.750 IN. DIA THD,16 THDS PER IN.,CLASS 2,BUSHING 17.500 IN.

FROM 2ND END EXCLUDING NEEDLE 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 4820-00-633-8591, 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
34447B
NSN: 4820-00-633-8591
FSC: 4820
CAGE: 00742 — AIR PRODUCTS & CHEMICALS, INC (USA)
SPECIFICATIONS
general_characteristics_item_description0.750 IN. DIA THD,16 THDS PER IN.,CLASS 2,BUSHING 17.500 IN. FROM 2ND END EXCLUDING NEEDLE IN
NSN4820-00-633-8591
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 34447B · 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
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: 0.750 IN. DIA THD,16 THDS PER IN.,CLASS 2,BUSHING 17.500 IN. FROM 2ND END EXCLUDING NEEDLE IN
TECHNICAL CHARACTERISTICS (FLIS)
GENERAL CHARACTERISTICS ITEM DESCRIPTION0.750 IN. DIA THD,16 THDS PER IN.,CLASS 2,BUSHING 17.500 IN. FROM 2ND END EXCLUDING NEEDLE IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
M0640-34447Interchangeable
interchangeable cross-reference
interchangeable
LN34447Interchangeable
interchangeable cross-reference
interchangeable
A544Interchangeable
interchangeable cross-reference
interchangeable
344-47Interchangeable
interchangeable cross-reference
interchangeable
A546Interchangeable
interchangeable cross-reference
interchangeable
3444-7 GP.1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 34447B?
34447B is a STEM,VALVE,EXPANSION.
What parts can replace 34447B?
There are 10 known substitutes for 34447B: M0640-34447, LN34447, A544 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 34447B?
34447B is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-633-8591. 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: July 2026