PartsTable
Technical Data Sheet
146D525-1 ✓ 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 VALVE,SAFETY RELIEF is a the manufacturer industrial component. Key specifications include thread_class: 2B FIRST END, connection_type: THREADED INTERNAL BOSS FIRST END, connection_style: GASKET SEAL(BOSS) FIRST END, thread_direction: RIGHT-HAND FIRST END, features_provided: PRESSURE TIGHT OUTLET SIDE, operating_pressure: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-277-3853, 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
146D525-1
NSN: 4820-00-277-3853
FSC: 4820
CAGE: 78711 — TELEPHONICS CORP (USA)
SPECIFICATIONS
thread_class2B FIRST END
connection_typeTHREADED INTERNAL BOSS FIRST END
connection_styleGASKET SEAL(BOSS) FIRST END
thread_directionRIGHT-HAND FIRST END
features_providedPRESSURE TIGHT OUTLET SIDE
operating_pressure3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
disk_loading_methodSPRING
flow_control_devicePLUG
nominal_thread_size0.750 INCHES FIRST END IN
valve_operation_methodAUTOMATIC
renewable_seat_ring_typeTHREADED
thread_quantity_per_inch16 FIRST END
NSN4820-00-277-3853
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS SIZE: — · — · — PN: 146D525-1 · 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
THREAD DIRECTION: RIGHT-HAND FIRST END
THREAD CLASS: 2B FIRST END
THREAD QUANTITY PER INCH: 16 FIRST END
FEATURES PROVIDED: PRESSURE TIGHT OUTLET SIDE
VALVE DISCHARGE FLOW RATE: 10.0 GALLONS PER MINUTE
ADJUSTABLE PRESSURE RANGE: +500.0 TO 4500.0 POUNDS PER SQUARE INCH LBS
CONNECTION STYLE: GASKET SEAL(BOSS) FIRST END
RENEWABLE SEAT RING TYPE: THREADED
TECHNICAL CHARACTERISTICS (FLIS)
THREAD DIRECTIONRIGHT-HAND FIRST END
THREAD CLASS2B FIRST END
THREAD QUANTITY PER INCH16 FIRST END
FEATURES PROVIDEDPRESSURE TIGHT OUTLET SIDE
VALVE DISCHARGE FLOW RATE10.0 GALLONS PER MINUTE
ADJUSTABLE PRESSURE RANGE+500.0 TO 4500.0 POUNDS PER SQUARE INCH LBS
CONNECTION STYLEGASKET SEAL(BOSS) FIRST END
RENEWABLE SEAT RING TYPETHREADED
FLOW CONTROL DEVICEPLUG
NOMINAL THREAD SIZE0.750 INCHES FIRST END IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
150 67Interchangeable
interchangeable cross-reference
interchangeable
44137Interchangeable
interchangeable cross-reference
interchangeable
208 67Interchangeable
interchangeable cross-reference
interchangeable
1681818Interchangeable
interchangeable cross-reference
interchangeable
15056Interchangeable
interchangeable cross-reference
interchangeable
TICS.08.10060Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 146D525-1?
146D525-1 is a VALVE,SAFETY RELIEF.
What parts can replace 146D525-1?
There are 7 known substitutes for 146D525-1: 150 67, 44137, 208 67 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 146D525-1?
146D525-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-277-3853. This indicates validated use in U.S. government and defense supply chains.
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