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Technical Data Sheet
PartsTable / COMPONENT / B-1221-E 2.50IN
B-1221-E 2.50IN ✓ 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 B-1221-E 2.50IN is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-275-4160, 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
B-1221-E 2.50IN
NSN: 4820-01-275-4160
FSC: 4820
CAGE: 30263 — PIMA VALVE, LLC (USA)
SPECIFICATIONS
Part NumberB-1221-E 2.50IN
NSN4820-01-275-4160
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: B-1221-E 2.50IN · 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
•
BONNET ATTACHMENT METHOD: BOLTED
•
VALVE OPERATION METHOD: MANUAL
•
MOUNTING POSITION: HORIZONTAL OR VERTICAL
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-N-288 FED SPEC SINGLE MATERIAL RESPONSE SEAT
•
MEDIA FOR WHICH DESIGNED: STEAM FIRST RESPONSE
•
BOLT HOLE QUANTITY: 8 ALL ENDS
•
CONNECTION TYPE: FLANGE ALL ENDS
TECHNICAL CHARACTERISTICS (FLIS)
BONNET ATTACHMENT METHODBOLTED
VALVE OPERATION METHODMANUAL
MOUNTING POSITIONHORIZONTAL OR VERTICAL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-N-288 FED SPEC SINGLE MATERIAL RESPONSE SEAT
MEDIA FOR WHICH DESIGNEDSTEAM FIRST RESPONSE
MATERIAL DOCUMENT AND CLASSIFICATIONASTM B61 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM B62 ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE
BOLT HOLE QUANTITY8 ALL ENDS
CONNECTION TYPEFLANGE ALL ENDS
STYLE DESIGNATORSTRAIGHT THRU FLANGED ENDS
FACE TO FACE DISTANCE8.000 INCHES IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
W7873PC185Interchangeable
interchangeable cross-reference
interchangeable
RC330-11-1690PC2645Interchangeable
interchangeable cross-reference
interchangeable
38008WInterchangeable
interchangeable cross-reference
interchangeable
2645Interchangeable
interchangeable cross-reference
interchangeable
852BInterchangeable
interchangeable cross-reference
interchangeable
AMS-QQ-A-200/8Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B-1221-E 2.50IN?
B-1221-E 2.50IN is a B-1221-E 2.50IN.
What parts can replace B-1221-E 2.50IN?
There are 11 known substitutes for B-1221-E 2.50IN: W7873PC185, RC330-11-1690PC2645, 38008W and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for B-1221-E 2.50IN?
B-1221-E 2.50IN is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-275-4160. 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