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Technical Data Sheet
PartsTable / COMPONENT / 975-D
975-D ✓ 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 VALVE,REGULATING,TEMPERATURE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY BULB, body_style: TEE, bulb_length: 13.188 INCHES NOMINAL IN, temp_rating: 80.0 FAHRENHEIT MINIMUM AND 120.0 FAHRENHEIT MAXIMUM DEGF, bulb_diameter: 1.000 INCHES NOMINAL IN, mounting_facility: FLANGE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-023-7757, 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
975-D
NSN: 4820-01-023-7757
FSC: 4820
CAGE: 75545 — LAWLER MANUFACTURING COMPANY, INC. (USA)
SPECIFICATIONS
materialCOPPER ALLOY BULB
body_styleTEE
bulb_length13.188 INCHES NOMINAL IN
temp_rating80.0 FAHRENHEIT MINIMUM AND 120.0 FAHRENHEIT MAXIMUM DEGF
bulb_diameter1.000 INCHES NOMINAL IN
mounting_facilityFLANGE
temp_adjustabilityADJUSTABLE
thermostatic_elementLIQUID IMMERSION TYPE
capillary_tube_length12.000 INCHES NOMINAL IN
face_to_face_distance9.000 INCHES NOMINAL IN
end_connection_quantity3
first_end_connection_typePLAIN FACE FLANGE
NSN4820-01-023-7757
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 975-D · 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
•
BULB DIAMETER: 1.000 INCHES NOMINAL IN
•
CAPILLARY TUBE LENGTH: 12.000 INCHES NOMINAL IN
•
THIRD END RELATIONSHIP WITH PRECEDING ENDS: NOT IDENTICAL WITH FIRST OR SECOND END
•
BULB LENGTH: 13.188 INCHES NOMINAL IN
•
END CONNECTION QUANTITY: 3
•
MATERIAL: COPPER ALLOY BODY
•
MOUNTING FACILITY: FLANGE
TECHNICAL CHARACTERISTICS (FLIS)
BULB DIAMETER1.000 INCHES NOMINAL IN
CAPILLARY TUBE LENGTH12.000 INCHES NOMINAL IN
THIRD END RELATIONSHIP WITH PRECEDING ENDSNOT IDENTICAL WITH FIRST OR SECOND END
BULB LENGTH13.188 INCHES NOMINAL IN
END CONNECTION QUANTITY3
MATERIALCOPPER ALLOY BODY
MOUNTING FACILITYFLANGE
MATERIALCOPPER ALLOY BULB
FIRST CONNECTION FACE TO CENTERLINE DISTANCE5.880 INCHES NOMINAL IN
BODY STYLETEE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
40043Interchangeable
interchangeable cross-reference
interchangeable
40043-801Interchangeable
interchangeable cross-reference
interchangeable
MILV19772Interchangeable
interchangeable cross-reference
interchangeable
40610-801Interchangeable
interchangeable cross-reference
interchangeable
M19772-C1F1020Interchangeable
interchangeable cross-reference
interchangeable
25TE-N-2 INCHInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 975-D?
975-D is a VALVE,REGULATING,TEMPERATURE.
What parts can replace 975-D?
There are 13 known substitutes for 975-D: 40043, 40043-801, MILV19772 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 975-D?
975-D is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-023-7757. 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