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SP8-4M — VALVE,SAFETY RELIEF

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

SP8-4M: VALVE,SAFETY RELIEF.

The VALVE,SAFETY RELIEF is a the manufacturer industrial component. Key specifications include bonnet_type: INSIDE SPRING, connection_type: THREADED EXTERNAL PIPE FIRST END, connection_style: PLAIN (PIPE) FIRST END, style_designator: ANGLE, thread_direction: RIGHT-HAND FIRST END, features_provided: BONNET PACKING. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-262-0381, 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
SP8-4M
NSN: 4820-00-262-0381
FSC: 4820 — Valves, Nonpowered
CAGE: F5235 — SAGANA INSTRUMENTATION (FRA)
SPECIFICATIONS
bonnet_typeINSIDE SPRING
connection_typeTHREADED EXTERNAL PIPE FIRST END
connection_stylePLAIN (PIPE) FIRST END
style_designatorANGLE
thread_directionRIGHT-HAND FIRST END
features_providedBONNET PACKING
surface_treatmentPASSIVATE LOCATION NOT OTHERWISE SPECIFIED
disk_loading_methodSPRING
flow_control_devicePOPPET
nominal_thread_size0.250 INCHES FIRST END IN
valve_operation_methodAUTOMATIC
bonnet_attachment_methodTHREADED
NSN4820-00-262-0381
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: SP8-4M · 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
•
FLOW CONTROL DEVICE: POPPET
•
NOMINAL PIPE SIZE ACCOMMODATED: 0.250 INCHES FIRST END IN
•
CONNECTION STYLE: PLAIN (PIPE) FIRST END
•
CONNECTION TYPE: THREADED EXTERNAL PIPE FIRST END
•
STYLE DESIGNATOR: ANGLE
•
ADJUSTABLE PRESSURE RANGE: +68.0 TO 82.0 POUNDS PER SQUARE INCH LBS
•
FEATURES PROVIDED: BONNET PACKING
•
BONNET TYPE: INSIDE SPRING
TECHNICAL CHARACTERISTICS
FLOW CONTROL DEVICEPOPPET
NOMINAL PIPE SIZE ACCOMMODATED0.250 INCHES FIRST END IN
CONNECTION STYLEPLAIN (PIPE) FIRST END
CONNECTION TYPETHREADED EXTERNAL PIPE FIRST END
STYLE DESIGNATORANGLE
ADJUSTABLE PRESSURE RANGE+68.0 TO 82.0 POUNDS PER SQUARE INCH LBS
FEATURES PROVIDEDBONNET PACKING
BONNET TYPEINSIDE SPRING
THREAD DIRECTIONRIGHT-HAND FIRST END
NOMINAL THREAD SIZE0.250 INCHES FIRST END IN
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 2
6664436Reference document
Same NSN cross-reference
Reference document — Secondary reference
561DReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)Demilitarization required — critical (Q)
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FREQUENTLY ASKED QUESTIONS
What is SP8-4M?
SP8-4M is a VALVE,SAFETY RELIEF.
What parts can replace SP8-4M?
There are 2 known substitutes for SP8-4M: 6664436, 561D. Substitute compatibility should be verified for your specific system.
What is the NSN for SP8-4M?
SP8-4M is cataloged in the U.S. Government catalog under NSN 4820-00-262-0381. This indicates validated use in U.S. government and defense supply chains.
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