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Technical Data Sheet
PartsTable / COMPONENT / 11X18
11X18 ✓ 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 STEM,BRAZING AND SOLDERING is a the manufacturer industrial component. Key specifications include angle: 32.0 DEGREES32.0 DEGREES, material: RUBBER BODY, nominal_width: 17.0 MILLIMETERS17.0 MILLIMETERS MM, performance_type: EXTRA HEAVY DUTYEXTRA HEAVY DUTY, style_designator: PLAIN, strengthening_feature: SYNTHETIC CORDSYNTHETIC CORD. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-371-9636, 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
11X18
NSN: 4820-00-371-9636
FSC: 4820
CAGE: 30367 — L-TEC WELDING AND CUTTING SYSTEMS (USA)
SPECIFICATIONS
angle32.0 DEGREES32.0 DEGREES
materialRUBBER BODY
nominal_width17.0 MILLIMETERS17.0 MILLIMETERS MM
performance_typeEXTRA HEAVY DUTYEXTRA HEAVY DUTY
style_designatorPLAIN
strengthening_featureSYNTHETIC CORDSYNTHETIC CORD
environmental_protectionHEAT RESISTANT AND HEAT RESISTANT AND OIL RESISTANT AND OIL RESISTANT AND STATIC FREESTATIC FREE
nominal_effective_outside_length1028.7 MILLIMETERS1028.7 MILLIMETERS MM
NSN4820-00-371-9636
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 11X18 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
10637Interchangeable
interchangeable cross-reference
interchangeable
SS38Interchangeable
interchangeable cross-reference
interchangeable
4-8723Interchangeable
interchangeable cross-reference
interchangeable
SS3/8Interchangeable
interchangeable cross-reference
interchangeable
F3/8-LWInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 11X18?
11X18 is a STEM,BRAZING AND SOLDERING.
What parts can replace 11X18?
There are 5 known substitutes for 11X18: 10637, SS38, 4-8723 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 11X18?
11X18 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-371-9636. 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