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Technical Data Sheet

3/8 SD-3-MN — VALVE,CHECK

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

3/8 SD-3-MN: VALVE,CHECK.

The VALVE,CHECK is a the manufacturer industrial component. Key specifications include material: STEEL COMP 316 BODY, valve_size: 0.375 INCHES IN, face_to_face_distance: 1.875 INCHES IN, valve_operation_method: AUTOMATIC, end_item_identification: MISC PARTS AUXILIARY SYSTEMS LCS1, part_name_assigned_by_controlling_agency: BACKFLOW PREVENTER WATTS SD-3. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-554-8679, 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
3/8 SD-3-MN
NSN: 4820-01-554-8679
FSC: 4820 — Valves, Nonpowered
CAGE: 79227 — WATTS REGULATOR COMPANY (USA)
SPECIFICATIONS
materialSTEEL COMP 316 BODY
valve_size0.375 INCHES IN
special_featuresDUAL CHECK WITH ATMOSPHERIC PORT DESIGNED FOR THE PROTECTION OF THE WATER SUPPLY FROM CARBON DIOXIDE GAS AND CARBONATED WATER
face_to_face_distance1.875 INCHES IN
valve_operation_methodAUTOMATIC
end_item_identificationMISC PARTS AUXILIARY SYSTEMS LCS1
part_name_assigned_by_controlling_agencyBACKFLOW PREVENTER WATTS SD-3
NSN4820-01-554-8679
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 3/8 SD-3-MN · 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
•
VALVE SIZE: 0.375 INCHES IN
•
FACE TO FACE DISTANCE: 1.875 INCHES IN
•
MATERIAL: STEEL COMP 316 BODY
•
VALVE OPERATION METHOD: AUTOMATIC
TECHNICAL CHARACTERISTICS
VALVE SIZE0.375 INCHES IN
SPECIAL FEATURESDUAL CHECK WITH ATMOSPHERIC PORT DESIGNED FOR THE PROTECTION OF THE WATER SUPPLY FROM CARBON DIOXIDE GAS AND CARBONATED WATER
FACE TO FACE DISTANCE1.875 INCHES IN
PART NAME ASSIGNED BY CONTROLLING AGENCYBACKFLOW PREVENTER WATTS SD-3
END ITEM IDENTIFICATIONMISC PARTS AUXILIARY SYSTEMS LCS1
MATERIALSTEEL COMP 316 BODY
VALVE OPERATION METHODAUTOMATIC
OTHER ITEMS IN FSC 4820 — Valves, Nonpowered
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4820-00-000-0097 4820-00-001-0010 4820-00-001-0020 4820-00-001-0021 4820-00-001-0032 4820-00-001-0037 4820-00-001-0042 4820-00-001-1230
SUBSTITUTES & CROSS-REFERENCES 1
SD-3-MNReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 3/8 SD-3-MN?
3/8 SD-3-MN is a VALVE,CHECK.
What parts can replace 3/8 SD-3-MN?
There is 1 known substitute for 3/8 SD-3-MN: SD-3-MN. Substitute compatibility should be verified for your specific system.
What is the NSN for 3/8 SD-3-MN?
3/8 SD-3-MN is cataloged in the U.S. Government catalog under NSN 4820-01-554-8679. This indicates validated use in U.S. government and defense supply chains.
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