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Technical Data Sheet
PartsTable / COMPONENT / 9906-A
9906-A ✓ Verified by PartsTable
— · 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

The RING,GUIDE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY, overall_length: 4.781 INCHES NOMINAL IN, stem_actuating_end_type: THREADED EXTERNALLY. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-050-1631, 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
9906-A
NSN: 4820-01-050-1631
FSC: 4820
CAGE: 82483 — SPENCE ENGINEERING CO INC DBA NICHOLSON STEAM TRAP (USA)
SPECIFICATIONS
materialNICKEL ALLOY
overall_length4.781 INCHES NOMINAL IN
special_featuresGUN METAL PER MIL-M016576(CANCELLED);5-3/16 IN. LG;FOUR 9/16 IN. DIA BOLT HOLES IN EA FLANGE;STRAIGHT-THRU FLOW;EIGHT 3/8 IN. DIA BOLT HOLES IN CONNECTING BONNET FLANGE IN
stem_actuating_end_typeTHREADED EXTERNALLY
general_characteristics_item_descriptionNICKEL COPPER ALLOY; QQ-N-281,CLASS B; 0.623 IN. ID; 0.687 IN. LG; 1/8-20 NEF THD; EXTERNALLY THD;TWO SLOTS ON THD END IN
NSN4820-01-050-1631
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 9906-A · 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
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURESGUN METAL PER MIL-M016576(CANCELLED);5-3/16 IN. LG;FOUR 9/16 IN. DIA BOLT HOLES IN EA FLANGE;STRAIGHT-THRU FLOW;EIGHT 3/8 IN. DIA BOLT HOLES IN CONNECTING BONNET FLANGE IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
4525Interchangeable
interchangeable cross-reference
interchangeable
2534Interchangeable
interchangeable cross-reference
interchangeable
SP232Interchangeable
interchangeable cross-reference
interchangeable
581Interchangeable
interchangeable cross-reference
interchangeable
40-12292Interchangeable
interchangeable cross-reference
interchangeable
40181Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 9906-A?
9906-A is a RING,GUIDE.
What parts can replace 9906-A?
There are 18 known substitutes for 9906-A: 4525, 2534, SP232 and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 9906-A?
9906-A is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-050-1631. 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