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Technical Data Sheet
PartsTable / COMPONENT / 128811
128811 ✓ Verified by PartsTable
Equip · 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

<b>Keyfeatures:</b><br>- USB numeric keypad asynchronous for notebook and PC. <br>- 19 keys with 000- and backspace key. <br>- supports Windows 98 SE, ME, 2000, XP, Vista, Linux, Mac OS 9.2 or higher.

<br>- no driver needed. <br>- packing: equip blister. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-164-7889, 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
128811
NSN: 4820-01-164-7889
FSC: 4820
CAGE: 48422 — WILLIAM POWELL COMPANY, THE DBA POWELL VALVE DIV THE STARFLO CORPORATION (USA)
SPECIFICATIONS
materialNICKEL ALLOY DISK
stem_typeRISING
valve_size3.000 INCHES IN
bonnet_typeOUTSIDE SCREW-YOKE
connection_typeFLANGE, ROUND W/HOLES
flange_diameter7.500 INCHES IN
bolt_hole_quantity4
flange_face_designRAISED
face_to_face_distance8.000 INCHES IN
valve_operation_methodMANUAL
bonnet_attachment_methodBOLTED
inlet_relationship_with_outletIDENTICAL
NSN4820-01-164-7889
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 128811 · Equip ⚠ 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
•
BONNET TYPE: OUTSIDE SCREW-YOKE
•
FLANGE DIAMETER: 7.500 INCHES IN
•
INLET RELATIONSHIP WITH OUTLET: IDENTICAL
•
VALVE SIZE: 3.000 INCHES IN
•
FACE TO FACE DISTANCE: 8.000 INCHES IN
•
VALVE OPERATION METHOD: MANUAL
•
MATERIAL: STEEL CORROSION RESISTING STEM
•
FLANGE FACE DESIGN: RAISED
TECHNICAL CHARACTERISTICS (FLIS)
BONNET TYPEOUTSIDE SCREW-YOKE
FLANGE DIAMETER7.500 INCHES IN
INLET RELATIONSHIP WITH OUTLETIDENTICAL
VALVE SIZE3.000 INCHES IN
FACE TO FACE DISTANCE8.000 INCHES IN
VALVE OPERATION METHODMANUAL
MATERIALSTEEL CORROSION RESISTING STEM
FLANGE FACE DESIGNRAISED
STEM TYPERISING
BOLT HOLE QUANTITY4
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
056325Interchangeable
interchangeable cross-reference
interchangeable
056325 ITEM 20Interchangeable
interchangeable cross-reference
interchangeable
109346Interchangeable
interchangeable cross-reference
interchangeable
831181961650200Interchangeable
interchangeable cross-reference
interchangeable
118196Interchangeable
interchangeable cross-reference
interchangeable
056325 ITEM 19Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 128811?
128811 is a LEVER,SPRING ADJUST manufactured by Equip.
What parts can replace 128811?
There are 7 known substitutes for 128811: 056325, 056325 ITEM 20, 109346 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 128811?
128811 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-164-7889. 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