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Technical Data Sheet
PartsTable / COMPONENT / 81G-0027M
81G-0027M ✓ 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 SEAT RING,ROTAMETER is a the manufacturer industrial component. Key specifications include material: GLASS TUBE, unit_type: MOUNTED, float_type: FREE, meter_type: FLOAT, scale_type: DIRECT CAPACITY READING, design_type: GLASS. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-173-1285, 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
81G-0027M
NSN: 4820-01-173-1285
FSC: 4820
CAGE: 53553 — AMETEK INC SCHUTTE AND KOERTING DIV (USA)
SPECIFICATIONS
materialGLASS TUBE
unit_typeMOUNTED
float_typeFREE
meter_typeFLOAT
scale_typeDIRECT CAPACITY READING
design_typeGLASS
alarm_signalNOT INCLUDED
constructionINCLOSED W/SIGHT WINDOW
float_quantity1
overall_length4.562 INCHES NOMINAL IN
scale_quantity1
spinning_floatNOT INCLUDED
NSN4820-01-173-1285
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 81G-0027M · 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: RUBBER,CHLOROPRENE
TECHNICAL CHARACTERISTICS (FLIS)
GENERAL CHARACTERISTICS ITEM DESCRIPTIONRUBBER,CHLOROPRENE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
81G-0027MInterchangeable
interchangeable cross-reference
interchangeable
SD334312D212Interchangeable
interchangeable cross-reference
interchangeable
20-4300Interchangeable
interchangeable cross-reference
interchangeable
81G-0027M-PIECE 12Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 81G-0027M?
81G-0027M is a SEAT RING,ROTAMETER.
What parts can replace 81G-0027M?
There are 4 known substitutes for 81G-0027M: 81G-0027M, SD334312D212, 20-4300 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 81G-0027M?
81G-0027M is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-173-1285. 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