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1561-3IN — VALVE,CHECK

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

1561-3IN: VALVE,CHECK.

The VALVE,CHECK is a the manufacturer industrial component. Key specifications include material: COBALT ALLOY FLOW CONTROL DEVICE, flange_shape: ROUND WITH HOLES ALL ENDS, special_features: VALVE SIZE 3.000 IN. IN, style_designator: STRAIGHT THRU, nominal_thickness: 0.875 INCHES ALL ENDS IN, bolt_hole_quantity: 4 ALL ENDS.

This part is cataloged in the U.S. Government catalog under NSN 4820-00-137-9212, 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
1561-3IN
NSN: 4820-00-137-9212
FSC: 4820 — Valves, Nonpowered
CAGE: 48422 — WILLIAM POWELL COMPANY, THE DBA POWELL VALVE DIV THE STARFLO CORPORATION (USA)
SPECIFICATIONS
materialCOBALT ALLOY FLOW CONTROL DEVICE
flange_shapeROUND WITH HOLES ALL ENDS
special_featuresVALVE SIZE 3.000 IN. IN
style_designatorSTRAIGHT THRU
nominal_thickness0.875 INCHES ALL ENDS IN
bolt_hole_quantity4 ALL ENDS
flange_face_designRAISED STRAIGHT ALL ENDS
operating_pressure150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
flow_control_deviceDISK
face_to_face_distance9.500 INCHES IN
maximum_operating_temp500.0 FAHRENHEIT SINGLE RESPONSE DEGF
valve_operation_methodAUTOMATIC
NSN4820-00-137-9212
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 1561-3IN · 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: DISK
•
FLANGE SHAPE: ROUND WITH HOLES ALL ENDS
•
FLANGE FACE DESIGN: RAISED STRAIGHT ALL ENDS
•
BOLT CIRCLE NOMINAL DIAMETER: 6.000 INCHES ALL ENDS IN
•
STYLE DESIGNATOR: STRAIGHT THRU
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A216,GRADE WCB ASSN STD SINGLE MATERIAL RESPONSE BODY
•
BOLT HOLE NOMINAL DIAMETER: 0.750 INCHES ALL ENDS IN
•
OPERATING PRESSURE: 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
TECHNICAL CHARACTERISTICS
FLOW CONTROL DEVICEDISK
FLANGE SHAPEROUND WITH HOLES ALL ENDS
FLANGE FACE DESIGNRAISED STRAIGHT ALL ENDS
BOLT CIRCLE NOMINAL DIAMETER6.000 INCHES ALL ENDS IN
STYLE DESIGNATORSTRAIGHT THRU
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A216,GRADE WCB ASSN STD SINGLE MATERIAL RESPONSE BODY
BOLT HOLE NOMINAL DIAMETER0.750 INCHES ALL ENDS IN
OPERATING PRESSURE150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
MAXIMUM OPERATING TEMP500.0 FAHRENHEIT SINGLE RESPONSE DEGF
NONDEFINITIVE SPEC/STD DATAC GROUP AND 3 TYPE AND 5 TRIM AND 150 CLASS
SUBSTITUTES & CROSS-REFERENCES 6
1572X-3INReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
31FCB-3 3 IN.Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
MILV18436Reference document
Same NSN cross-reference
Reference document — Secondary reference
MIL-DTL-18436Reference document
Same NSN cross-reference
Reference document — Identification reference
1561A 3INReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
8294SReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1561-3IN?
1561-3IN is a VALVE,CHECK.
What parts can replace 1561-3IN?
There are 6 known substitutes for 1561-3IN: 1572X-3IN, 31FCB-3 3 IN., MILV18436 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1561-3IN?
1561-3IN is cataloged in the U.S. Government catalog under NSN 4820-00-137-9212. 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.