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Technical Data Sheet
PartsTable / COMPONENT / TYPE 1/CLASS 300/SIZE 3/4 IN.
TYPE 1/CLASS 300/SIZE 3/4 IN. ✓ 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 TYPE 1/CLASS 300/SIZE 3/4 IN. is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-541-0371, 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
TYPE 1/CLASS 300/SIZE 3/4 IN.
NSN: 4820-00-541-0371
FSC: 4820
CAGE: 59646 — MANUFACTURERS STANDARDIZATION SOCIETY OF THE VALVE AND FITTINGS INDUSTRY INC (USA)
SPECIFICATIONS
Part NumberTYPE 1/CLASS 300/SIZE 3/4 IN.
NSN4820-00-541-0371
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: TYPE 1/CLASS 300/SIZE 3/4 IN. · 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
•
MAXIMUM OPERATING TEMP: 425.0 FAHRENHEIT SINGLE RESPONSE DEGF
•
FLOW CONTROL DEVICE: DISK
•
CONNECTION TYPE: THREADED INTERNAL PIPE ALL ENDS
•
MATERIAL: STEEL FLOW CONTROL DEVICE
•
FEATURES PROVIDED: BONNET PACKING
•
MATERIAL DOCUMENT AND CLASSIFICATION: A276 ASSN STD SINGLE MATERIAL RESPONSE SEAT
•
NOMINAL THREAD SIZE: 0.750 INCHES ALL ENDS IN
TECHNICAL CHARACTERISTICS (FLIS)
MAXIMUM OPERATING TEMP425.0 FAHRENHEIT SINGLE RESPONSE DEGF
FLOW CONTROL DEVICEDISK
CONNECTION TYPETHREADED INTERNAL PIPE ALL ENDS
MATERIALSTEEL FLOW CONTROL DEVICE
FEATURES PROVIDEDBONNET PACKING
MATERIAL DOCUMENT AND CLASSIFICATIONA276 ASSN STD SINGLE MATERIAL RESPONSE SEAT
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-C-390,ALLOY D4 FED SPEC SINGLE MATERIAL RESPONSE BODY
NOMINAL THREAD SIZE0.750 INCHES ALL ENDS IN
MEDIA FOR WHICH DESIGNEDSTEAM SINGLE RESPONSE
SPECIAL FEATURESVALVE SIZE 0.750 IN. IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
MIL-V-1187Interchangeable
interchangeable cross-reference
interchangeable
MSS SP-80Interchangeable
interchangeable cross-reference
interchangeable
803Interchangeable
interchangeable cross-reference
interchangeable
214CInterchangeable
interchangeable cross-reference
interchangeable
MIL-V-1187B TYIInterchangeable
interchangeable cross-reference
interchangeable
4592Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is TYPE 1/CLASS 300/SIZE 3/4 IN.?
TYPE 1/CLASS 300/SIZE 3/4 IN. is a TYPE 1/CLASS 300/SIZE 3/4 IN..
What parts can replace TYPE 1/CLASS 300/SIZE 3/4 IN.?
There are 14 known substitutes for TYPE 1/CLASS 300/SIZE 3/4 IN.: MIL-V-1187, MSS SP-80, 803 and 11 more. Substitute compatibility should be verified for your specific system.
Is TYPE 1/CLASS 300/SIZE 3/4 IN. still available?
TYPE 1/CLASS 300/SIZE 3/4 IN. is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026