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Technical Data Sheet
PartsTable / COMPONENT / MSS SP-70
MSS SP-70 ✓ 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 TRANSFORMER,AUDIO FREQUENCY is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY STEM, stem_type: RISING, valve_size: 4.000 INCHES IN, bonnet_type: OUTSIDE SCREW-YOKE, pressure_class: ERR-060, connection_type: FLANGE, ROUND W/HOLES. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-142-3139, 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
MSS SP-70
NSN: 4820-00-142-3139
FSC: 4820
CAGE: 59646 — MANUFACTURERS STANDARDIZATION SOCIETY OF THE VALVE AND FITTINGS INDUSTRY INC (USA)
SPECIFICATIONS
materialCOPPER ALLOY STEM
stem_typeRISING
valve_size4.000 INCHES IN
bonnet_typeOUTSIDE SCREW-YOKE
pressure_classERR-060
connection_typeFLANGE, ROUND W/HOLES
flange_diameter9.000 INCHES IN
bolt_hole_quantity8
flange_face_designPLAIN
face_to_face_distance9.000 INCHES IN
valve_operation_methodMANUAL
end_item_identificationSTRATEGIC SEALIFT CONVERSION SHIPS CLASS
NSN4820-00-142-3139
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: MSS SP-70 · 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
•
FLANGE DIAMETER: 7.500 INCHES IN
•
VALVE OPERATION METHOD: MANUAL
•
MATERIAL: IRON BODY
•
FACE TO FACE DISTANCE: 8.000 INCHES IN
•
FLANGE FACE DESIGN: PLAIN
•
STEM TYPE: RISING
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTMFEA000 ASSN STD SINGLE MATERIAL RESPONSE BODY
•
BOLT HOLE QUANTITY: 4
TECHNICAL CHARACTERISTICS (FLIS)
FLANGE DIAMETER7.500 INCHES IN
VALVE OPERATION METHODMANUAL
MATERIALIRON BODY
FACE TO FACE DISTANCE8.000 INCHES IN
FLANGE FACE DESIGNPLAIN
STEM TYPERISING
MATERIAL DOCUMENT AND CLASSIFICATIONASTMFEA000 ASSN STD SINGLE MATERIAL RESPONSE BODY
BOLT HOLE QUANTITY4
VALVE SIZE3.000 INCHES IN
MATERIAL DOCUMENT AND CLASSIFICATIONASTMCUB000 ASSN STD SINGLE MATERIAL RESPONSE STEM
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
1138Interchangeable
interchangeable cross-reference
interchangeable
326Interchangeable
interchangeable cross-reference
interchangeable
1787 SZ 4 INInterchangeable
interchangeable cross-reference
interchangeable
WWV58Interchangeable
interchangeable cross-reference
interchangeable
MSS-S-70-76Interchangeable
interchangeable cross-reference
interchangeable
FIG 325 SIZE 3 INInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MSS SP-70?
MSS SP-70 is a TRANSFORMER,AUDIO FREQUENCY.
What parts can replace MSS SP-70?
There are 20 known substitutes for MSS SP-70: 1138, 326, 1787 SZ 4 IN and 17 more. Substitute compatibility should be verified for your specific system.
Is MSS SP-70 still available?
MSS SP-70 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