PartsTable
Technical Data Sheet
Download PDF

WD201ALB — VALVE,BUTTERFLY

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

WD201ALB: VALVE,BUTTERFLY.

The VALVE,BUTTERFLY is a the manufacturer industrial component. Key specifications include material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR FLOW CONTROL DEVICE, flange_shape: ROUND WITH HOLES ALL ENDS, style_designator: STRAIGHT THRU, nominal_thickness: 1.128 INCHES ALL ENDS IN, bolt_hole_quantity: 6 ALL ENDS, flange_face_design: PLAIN ALL ENDS. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-059-9952, 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
WD201ALB
NSN: 4820-00-059-9952
NIINs: 000599952, 006060120
FSC: 4820 — Valves, Nonpowered
CAGE: 27996 — HEIL ENVIRONMENTAL INDUSTRIES (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR FLOW CONTROL DEVICE
flange_shapeROUND WITH HOLES ALL ENDS
style_designatorSTRAIGHT THRU
nominal_thickness1.128 INCHES ALL ENDS IN
bolt_hole_quantity6 ALL ENDS
flange_face_designPLAIN ALL ENDS
operating_pressure200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
valve_operation_methodMANUAL
nominal_outside_diameter4.500 INCHES ALL ENDS IN
bolt_hole_nominal_diameter0.442 INCHES ALL ENDS IN
bolt_circle_nominal_diameter3.750 INCHES ALL ENDS IN
NSN4820-00-059-9952
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: WD201ALB · 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
•
FLANGE SHAPE: ROUND WITH HOLES ALL ENDS
•
FLANGE FACE DESIGN: PLAIN ALL ENDS
•
BOLT CIRCLE NOMINAL DIAMETER: 3.750 INCHES ALL ENDS IN
•
STYLE DESIGNATOR: STRAIGHT THRU
•
BOLT HOLE NOMINAL DIAMETER: 0.442 INCHES ALL ENDS IN
•
OPERATING PRESSURE: 200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
NOMINAL OUTSIDE DIAMETER: 4.500 INCHES ALL ENDS IN
•
BOLT HOLE QUANTITY: 6 ALL ENDS
TECHNICAL CHARACTERISTICS
FLANGE SHAPEROUND WITH HOLES ALL ENDS
FLANGE FACE DESIGNPLAIN ALL ENDS
BOLT CIRCLE NOMINAL DIAMETER3.750 INCHES ALL ENDS IN
STYLE DESIGNATORSTRAIGHT THRU
BOLT HOLE NOMINAL DIAMETER0.442 INCHES ALL ENDS IN
OPERATING PRESSURE200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
NOMINAL OUTSIDE DIAMETER4.500 INCHES ALL ENDS IN
BOLT HOLE QUANTITY6 ALL ENDS
MATERIALALUMINUM BODY
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR FLOW CONTROL DEVICE
SUBSTITUTES & CROSS-REFERENCES 2
WD201ALVReference document
Same NSN cross-reference
Reference document — Secondary reference
WD21ALReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
Ready to buy WD201ALB?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is WD201ALB?
WD201ALB is a VALVE,BUTTERFLY.
What parts can replace WD201ALB?
There are 2 known substitutes for WD201ALB: WD201ALV, WD21AL. Substitute compatibility should be verified for your specific system.
What is the NSN for WD201ALB?
WD201ALB is cataloged in the U.S. Government catalog under NSN 4820-00-059-9952. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — WD201ALB

✓ 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.