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B-M1200 PIECE 78 — Technical Data Sheet

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— · 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 VALVE,CHECK is a the manufacturer industrial component. Key specifications include special_features: VALVE SIZE 1.250 IN. IN, mounting_position: HORIZONTAL OR VERTICAL, operating_pressure: 4600.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS, disk_loading_method: SPRING, flow_control_device: DISK, valve_operation_method: AUTOMATIC.

This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System under NSN 4820-01-238-0154, 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-M1200 PIECE 78
NSN: 4820-01-238-0154
FSC: 4820
CAGE: 0E3Y1 — AVIATION TECHNOLOGY, INC. (USA)
SPECIFICATIONS
special_featuresVALVE SIZE 1.250 IN. IN
mounting_positionHORIZONTAL OR VERTICAL
operating_pressure4600.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
disk_loading_methodSPRING
flow_control_deviceDISK
valve_operation_methodAUTOMATIC
NSN4820-01-238-0154
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: B-M1200 PIECE 78 · 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
•
OPERATING PRESSURE: 4600.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
FLOW CONTROL DEVICE: DISK
•
DISK LOADING METHOD: SPRING
•
VALVE OPERATION METHOD: AUTOMATIC
•
MOUNTING POSITION: HORIZONTAL OR VERTICAL
TECHNICAL CHARACTERISTICS
OPERATING PRESSURE4600.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
FLOW CONTROL DEVICEDISK
DISK LOADING METHODSPRING
VALVE OPERATION METHODAUTOMATIC
MOUNTING POSITIONHORIZONTAL OR VERTICAL
SPECIAL FEATURESVALVE SIZE 1.250 IN. IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
F5450InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
MILG3036InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
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12Z12002-44InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
XA5059PC2968InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
C107PC2968InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
6B1004InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B-M1200 PIECE 78?
B-M1200 PIECE 78 is a VALVE,CHECK.
What parts can replace B-M1200 PIECE 78?
There are 15 known substitutes for B-M1200 PIECE 78: F5450, MILG3036, 12Z12002-44 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for B-M1200 PIECE 78?
B-M1200 PIECE 78 is cataloged in the Federal Logistics Information System under NSN 4820-01-238-0154. This indicates validated use in U.S. government and defense supply chains.
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PartsTable Design LLC · partstable.com
Last verified: October 2026