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6746-Y-3/4-CHECK — 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 material: PLASTIC POLYVINYL CHLORIDE (PVC) BODY, special_features: VALVE SIZE 3/4 IN. IN, style_designator: STRAIGHT THRU, valve_operation_method: AUTOMATIC, end_item_identification: STRATEGIC SEALIFT CONVERSION SHIPS CLASS.

This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-435-4929, 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
6746-Y-3/4-CHECK
NSN: 4820-01-435-4929
FSC: 4820
CAGE: 22501 — HOWELL LABORATORIES INC DBA HOWELL LABORATORIES INC (USA)
SPECIFICATIONS
materialPLASTIC POLYVINYL CHLORIDE (PVC) BODY
special_featuresVALVE SIZE 3/4 IN. IN
style_designatorSTRAIGHT THRU
valve_operation_methodAUTOMATIC
end_item_identificationSTRATEGIC SEALIFT CONVERSION SHIPS CLASS
NSN4820-01-435-4929
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 6746-Y-3/4-CHECK · 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
•
MATERIAL: PLASTIC POLYVINYL CHLORIDE (PVC) BODY
•
VALVE OPERATION METHOD: AUTOMATIC
•
STYLE DESIGNATOR: STRAIGHT THRU
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALPLASTIC POLYVINYL CHLORIDE (PVC) BODY
END ITEM IDENTIFICATIONSTRATEGIC SEALIFT CONVERSION SHIPS CLASS
VALVE OPERATION METHODAUTOMATIC
SPECIAL FEATURESVALVE SIZE 3/4 IN. IN
STYLE DESIGNATORSTRAIGHT THRU
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
6670Interchangeable
interchangeable cross-reference
interchangeable
1504408Interchangeable
interchangeable cross-reference
interchangeable
N0S70Interchangeable
interchangeable cross-reference
interchangeable
E0S70Interchangeable
interchangeable cross-reference
interchangeable
CD-2Interchangeable
interchangeable cross-reference
interchangeable
CLEOIDE DISCOIDEInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 6746-Y-3/4-CHECK?
6746-Y-3/4-CHECK is a VALVE,CHECK.
What parts can replace 6746-Y-3/4-CHECK?
There are 14 known substitutes for 6746-Y-3/4-CHECK: 6670, 1504408, N0S70 and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 6746-Y-3/4-CHECK?
6746-Y-3/4-CHECK is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-435-4929. 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: September 2026