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Technical Data Sheet
PartsTable / COMPONENT / 2787-20
2787-20 ✓ 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

PARTS KIT,PRESSURE REGULATING VA. Key specifications include overall_height: 2.300 INCHES NOMINAL IN, overall_diameter: 4.000 INCHES NOMINAL IN, special_features: UNIPOLAR SENSOR, DUAL CHAMBER, voltage_in_volts_and_current_type: 32.0 DC. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-241-2987, 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
2787-20
NSN: 4820-01-241-2987
FSC: 4820
CAGE: 43990 — NORGREN C A CO (USA)
SPECIFICATIONS
overall_height2.300 INCHES NOMINAL IN
overall_diameter4.000 INCHES NOMINAL IN
special_featuresUNIPOLAR SENSOR, DUAL CHAMBER
voltage_in_volts_and_current_type32.0 DC
NSN4820-01-241-2987
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 2787-20 · 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
•
END ITEM SOURCE: 43990
•
END ITEM NAME: FILTER/REGULATOR
•
MODEL NUMBER: B38
TECHNICAL CHARACTERISTICS (FLIS)
END ITEM SOURCE43990
END ITEM NAMEFILTER/REGULATOR
MODEL NUMBERB38
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
278/720Interchangeable
interchangeable cross-reference
interchangeable
1551BInterchangeable
interchangeable cross-reference
interchangeable
221-0577-00Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2787-20?
2787-20 is a PARTS KIT,PRESSURE REGULATING VA.
What parts can replace 2787-20?
There are 3 known substitutes for 2787-20: 278/720, 1551B, 221-0577-00. Substitute compatibility should be verified for your specific system.
What is the NSN for 2787-20?
2787-20 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-241-2987. 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