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1R3643-28-30 — VALVE,RESTRICTOR CHECK

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

1R3643-28-30: VALVE,RESTRICTOR CHECK.

The VALVE,RESTRICTOR CHECK is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING FLOW CONTROL DEVICE, seat_angle: 37.0 DEGREES FIRST END, thread_class: 3A FIRST END A, connection_type: THREADED EXTERNAL TUBE FIRST END, connection_style: FLARED (TUBE) FIRST END, special_features: 2.969 IN. OVER-ALL LG,1.000 IN.

ACROSS FLATS IN. This part is cataloged in the U.S. Government catalog under NSN 4820-00-657-3697, 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
1R3643-28-30
NSN: 4820-00-657-3697
FSC: 4820 — Valves, Nonpowered
CAGE: 26044 — SAF INDUSTRIES LLC DBA SAF INDUSTRIES LLC DIV GARKENYON (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING FLOW CONTROL DEVICE
seat_angle37.0 DEGREES FIRST END
thread_class3A FIRST END A
connection_typeTHREADED EXTERNAL TUBE FIRST END
connection_styleFLARED (TUBE) FIRST END
special_features2.969 IN. OVER-ALL LG,1.000 IN. ACROSS FLATS IN
style_designatorSTRAIGHT THRU
thread_directionRIGHT-HAND FIRST END
aperture_diameter0.050 INCHES NOMINAL IN
flow_control_devicePOPPET
nominal_thread_size0.437 INCHES FIRST END IN
thread_quantity_per_inch20 FIRST END
NSN4820-00-657-3697
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 1R3643-28-30 · 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
•
FLOW CONTROL DEVICE: POPPET
•
CONNECTION STYLE: FLARED (TUBE) FIRST END
•
CONNECTION TYPE: THREADED EXTERNAL TUBE FIRST END
•
STYLE DESIGNATOR: STRAIGHT THRU
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.250 INCHES FIRST END IN
•
APERTURE DIAMETER: 0.050 INCHES NOMINAL IN
•
THREAD DIRECTION: RIGHT-HAND FIRST END
•
NOMINAL THREAD SIZE: 0.437 INCHES FIRST END IN
TECHNICAL CHARACTERISTICS
FLOW CONTROL DEVICEPOPPET
CONNECTION STYLEFLARED (TUBE) FIRST END
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST END
STYLE DESIGNATORSTRAIGHT THRU
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.250 INCHES FIRST END IN
APERTURE DIAMETER0.050 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND FIRST END
NOMINAL THREAD SIZE0.437 INCHES FIRST END IN
SEAT ANGLE37.0 DEGREES FIRST END
SPECIAL FEATURES2.969 IN. OVER-ALL LG,1.000 IN. ACROSS FLATS IN
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
Demilitarization required — mutilation
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FREQUENTLY ASKED QUESTIONS
What is 1R3643-28-30?
1R3643-28-30 is a VALVE,RESTRICTOR CHECK.
What is the NSN for 1R3643-28-30?
1R3643-28-30 is cataloged in the U.S. Government catalog under NSN 4820-00-657-3697. This indicates validated use in U.S. government and defense supply chains.
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