PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 1640-1 1/4 IN
1640-1 1/4 IN ✓ 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 1640-1 1/4 IN is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-287-3952, 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
1640-1 1/4 IN
NSN: 4820-00-287-3952
FSC: 4820
CAGE: 37239 — LUNKENHEIMER CO (USA)
SPECIFICATIONS
Part Number1640-1 1/4 IN
NSN4820-00-287-3952
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 1640-1 1/4 IN · 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 DOCUMENT AND CLASSIFICATION: ASTM B-62 ASSN STD SINGLE MATERIAL RESPONSE DISK
•
MATERIAL: COPPER ALLOY 836 SEAT
•
NOMINAL THREAD SIZE: 1.250 INCHES IN
•
MAXIMUM OPERATING TEMP AND MEDIA FOR WHICH DESIGNED: 450.0 FAHRENHEIT STEAM AND 450.0 FAHRENHEIT WATER-OIL-GAS DEGF
•
INLET RELATIONSHIP WITH OUTLET: IDENTICAL
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATIONASTM B-62 ASSN STD SINGLE MATERIAL RESPONSE DISK
MATERIALCOPPER ALLOY 836 SEAT
MATERIAL DOCUMENT AND CLASSIFICATIONASTM B-62 ASSN STD SINGLE MATERIAL RESPONSE SEAT
MATERIAL DOCUMENT AND CLASSIFICATIONASTM B-62 ASSN STD SINGLE MATERIAL RESPONSE STEM
NOMINAL THREAD SIZE1.250 INCHES IN
MAXIMUM OPERATING TEMP AND MEDIA FOR WHICH DESIGNED450.0 FAHRENHEIT STEAM AND 450.0 FAHRENHEIT WATER-OIL-GAS DEGF
MATERIALIRON CAST UNS F12102 BODY
INLET RELATIONSHIP WITH OUTLETIDENTICAL
STEM TYPERISING
PRESSURE CLASSERR-060
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
30516-1Interchangeable
interchangeable cross-reference
interchangeable
HL27109Interchangeable
interchangeable cross-reference
interchangeable
RC1Interchangeable
interchangeable cross-reference
interchangeable
FIG4901 1-2INInterchangeable
interchangeable cross-reference
interchangeable
16401 1-2INInterchangeable
interchangeable cross-reference
interchangeable
FIG7091 1-2INInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
Ready to buy 1640-1 1/4 IN?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 1640-1 1/4 IN?
1640-1 1/4 IN is a 1640-1 1/4 IN.
What parts can replace 1640-1 1/4 IN?
There are 20 known substitutes for 1640-1 1/4 IN: 30516-1, HL27109, RC1 and 17 more. Substitute compatibility should be verified for your specific system.
Is 1640-1 1/4 IN still available?
1640-1 1/4 IN is currently cancelled.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 1640-1 1/4 IN

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026