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138-9057 — VALVE,SAFETY RELIEF

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

138-9057: VALVE,SAFETY RELIEF.

The VALVE,SAFETY RELIEF is a the manufacturer industrial component. Key specifications include nominal_width: 71.1 MILLIMETERS ALL ENDS MM, nominal_length: 96.5 MILLIMETERS ALL ENDS MM, end_item_identification: 385-0933 AIR COMPRESSOR GROUP, part_name_assigned_by_controlling_agency: AIR COMPRESSOR PRESSURE RELIEF VALVE. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-668-7560, 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
138-9057
NSN: 4820-01-668-7560
FSC: 4820 — Valves, Nonpowered
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
nominal_width71.1 MILLIMETERS ALL ENDS MM
nominal_length96.5 MILLIMETERS ALL ENDS MM
end_item_identification385-0933 AIR COMPRESSOR GROUP
part_name_assigned_by_controlling_agencyAIR COMPRESSOR PRESSURE RELIEF VALVE
NSN4820-01-668-7560
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 138-9057 · 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
•
NOMINAL LENGTH: 96.5 MILLIMETERS ALL ENDS MM
•
NOMINAL WIDTH: 71.1 MILLIMETERS ALL ENDS MM
TECHNICAL CHARACTERISTICS
NOMINAL LENGTH96.5 MILLIMETERS ALL ENDS MM
NOMINAL WIDTH71.1 MILLIMETERS ALL ENDS MM
PART NAME ASSIGNED BY CONTROLLING AGENCYAIR COMPRESSOR PRESSURE RELIEF VALVE
END ITEM IDENTIFICATION385-0933 AIR COMPRESSOR GROUP
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 138-9057?
138-9057 is a VALVE,SAFETY RELIEF.
What is the NSN for 138-9057?
138-9057 is cataloged in the U.S. Government catalog under NSN 4820-01-668-7560. This indicates validated use in U.S. government and defense supply chains.
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