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1903-1391 — ACTUATOR,HYDRAULIC-PNEUMATIC,ROT

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

1903-1391: ACTUATOR,HYDRAULIC-PNEUMATIC,ROT.

ACTUATOR,HYDRAULIC-PNEUMATIC,ROT. Key specifications include material: STEEL COMP 17-4PH, end_similarity: NOT IDENTICAL, overall_length: 20.180 INCHES NOMINAL IN, surface_finish: 16.0 MICROINCHES, first_end_style: INTERNAL THREADED, second_end_style: TONGUE ROUNDED ENDS. This part is cataloged in the U.S.

Government catalog under NSN 4810-01-416-9354, 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
1903-1391
NSN: 4810-01-416-9354
NIINs: 014169354, 014201122, 014540769
FSC: 4810 — Valves, Powered
CAGE: 09176 — PARKER-HANNIFIN CORPORATION DBA PNEUTRONICS DIV PNEUMATIC DIVISION (USA)
SPECIFICATIONS
materialSTEEL COMP 17-4PH
step_quantity6
end_similarityNOT IDENTICAL
overall_length20.180 INCHES NOMINAL IN
surface_finish16.0 MICROINCHES
first_end_styleINTERNAL THREADED
second_end_styleTONGUE ROUNDED ENDS
special_features1ST 1ST END HAS TWO DRILLED HOLES 0.204 BY .75 AND TAPPED 1/4-20UNC-2B, 2ND END RECTANGULAR ,ROUNDED CORNERS FLATS ON EACH SIDE AND BORED INTERNALLY.
first_end_diameter1.6190 INCHES MINIMUM AND 1.6200 INCHES MAXIMUM IN
second_end_diameter1.3800 INCHES NOMINAL IN
largest_step_diameter2.2430 INCHES MINIMUM AND 2.2450 INCHES MAXIMUM IN
second_end_step_length1.5000 INCHES NOMINAL IN
NSN4810-01-416-9354
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 1903-1391 · 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
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

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 1903-1391?
1903-1391 is a ACTUATOR,HYDRAULIC-PNEUMATIC,ROT.
What is the NSN for 1903-1391?
1903-1391 is cataloged in the U.S. Government catalog under NSN 4810-01-416-9354. This indicates validated use in U.S. government and defense supply chains.
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