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77737135-3 — HEAD AND DISK,SAFETY,PRESSURE RE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

77737135-3: HEAD AND DISK,SAFETY,PRESSURE RE.

HEAD AND DISK,SAFETY,PRESSURE RE. Key specifications include disk_type: SOLID, head_type: INSERT, disk_material: SILVER, head_material: COPPER ALLOY, burst_pressure: 300.0 PRESSURE POUNDS PER SQUARE INCH GAGE, burst_temperature: 200.0 FAHRENHEIT DEGF. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-108-7828, 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
77737135-3
NSN: 4820-01-108-7828
FSC: 4820 — Valves, Nonpowered
CAGE: 01359 — TRIUMPH THERMAL SYSTEMS - MARYLAND, INC. (USA)
SPECIFICATIONS
disk_typeSOLID
head_typeINSERT
disk_materialSILVER
head_materialCOPPER ALLOY
burst_pressure300.0 PRESSURE POUNDS PER SQUARE INCH GAGE
burst_temperature200.0 FAHRENHEIT DEGF
NSN4820-01-108-7828
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 77737135-3 · 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
•
DISK MATERIAL: SILVER
•
BURST PRESSURE: 300.0 PRESSURE POUNDS PER SQUARE INCH GAGE
•
HEAD TYPE: INSERT
•
BURST TEMPERATURE: 200.0 FAHRENHEIT DEGF
•
DISK TYPE: SOLID
•
HEAD MATERIAL: COPPER ALLOY
TECHNICAL CHARACTERISTICS
DISK MATERIALSILVER
BURST PRESSURE300.0 PRESSURE POUNDS PER SQUARE INCH GAGE
HEAD TYPEINSERT
BURST TEMPERATURE200.0 FAHRENHEIT DEGF
DISK TYPESOLID
HEAD MATERIALCOPPER ALLOY
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
77-37-00-10-37Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
77737135Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 77737135-3?
77737135-3 is a HEAD AND DISK,SAFETY,PRESSURE RE.
What parts can replace 77737135-3?
There are 2 known substitutes for 77737135-3: 77-37-00-10-37, 77737135. Substitute compatibility should be verified for your specific system.
What is the NSN for 77737135-3?
77737135-3 is cataloged in the U.S. Government catalog under NSN 4820-01-108-7828. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.