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Technical Data Sheet
PartsTable / COMPONENT / LD1-50-1S
LD1-50-1S ✓ 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,CHECK is a the manufacturer industrial component. Key specifications include material: STEEL FLOW CONTROL DEVICE, connection_type: THREADED INTERNAL PIPE ALL ENDS, offset_distance: 0.562 INCHES IN, connection_style: PLAIN, OPTIONAL END (PIPE) ALL ENDS, special_features: FURNISHED W/TWO UNTHD MTG HOLES 0.343 IN. DIA,VALVE IS PILOT OPERATED W/THD INT PILOT PORT 0.250-18 NPT IN, style_designator: STRAIGHT THRU W/OFFSET.

This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-336-9643, 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
LD1-50-1S
NSN: 4820-00-336-9643
FSC: 4820
CAGE: 82271 — PARKER-HANNIFIN CORPORATION DBA PNEUTRONICS DIV HYDRAULIC CARTRIDGE SYSTEMS DIVISION (USA)
SPECIFICATIONS
materialSTEEL FLOW CONTROL DEVICE
connection_typeTHREADED INTERNAL PIPE ALL ENDS
offset_distance0.562 INCHES IN
connection_stylePLAIN, OPTIONAL END (PIPE) ALL ENDS
special_featuresFURNISHED W/TWO UNTHD MTG HOLES 0.343 IN. DIA,VALVE IS PILOT OPERATED W/THD INT PILOT PORT 0.250-18 NPT IN
style_designatorSTRAIGHT THRU W/OFFSET
thread_directionRIGHT-HAND ALL ENDS
mounting_positionHORIZONTAL OR VERTICAL
operating_pressure3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
disk_loading_methodSPRING
flow_control_devicePOPPET
nominal_thread_size0.500 INCHES ALL ENDS IN
NSN4820-00-336-9643
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: LD1-50-1S · 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
•
CONNECTION STYLE: PLAIN, OPTIONAL END (PIPE) ALL ENDS
•
MATERIAL: STEEL FLOW CONTROL DEVICE
•
FLOW CONTROL DEVICE: POPPET
•
VALVE OPERATION METHOD: AUTOMATIC
•
CONNECTION TYPE: THREADED INTERNAL PIPE ALL ENDS
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURESFURNISHED W/TWO UNTHD MTG HOLES 0.343 IN. DIA,VALVE IS PILOT OPERATED W/THD INT PILOT PORT 0.250-18 NPT IN
CONNECTION STYLEPLAIN, OPTIONAL END (PIPE) ALL ENDS
MATERIALSTEEL FLOW CONTROL DEVICE
FLOW CONTROL DEVICEPOPPET
VALVE OPERATION METHODAUTOMATIC
CONNECTION TYPETHREADED INTERNAL PIPE ALL ENDS
MATERIALPLASTIC PACKING
MATERIALSTEEL BODY
NOMINAL THREAD SIZE0.500 INCHES ALL ENDS IN
OPERATING PRESSURE3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
AB0H302C2891Interchangeable
interchangeable cross-reference
interchangeable
AB06602C2891Interchangeable
interchangeable cross-reference
interchangeable
16084Interchangeable
interchangeable cross-reference
interchangeable
A16084CInterchangeable
interchangeable cross-reference
interchangeable
480358S54Interchangeable
interchangeable cross-reference
interchangeable
161919H1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is LD1-50-1S?
LD1-50-1S is a VALVE,CHECK.
What parts can replace LD1-50-1S?
There are 18 known substitutes for LD1-50-1S: AB0H302C2891, AB06602C2891, 16084 and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for LD1-50-1S?
LD1-50-1S is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-336-9643. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026