PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 14444-187
14444-187 ✓ 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

PARTS KIT,DIAPHRAGM REPLACEMENT. Key specifications include model_number: 50.55, document_type: PARTS LIST, document_source: 41387, component_quantity: 50, document_identification: 1444-187, end_item_identification: MISC NNRS. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-493-6068, 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
14444-187
NSN: 4820-01-493-6068
FSC: 4820
CAGE: 41387 — SIEMENS INDUSTRY, INC. DBA SIEMENS ENERGY DIV PROCESS INDUSTRIES AND DRIVES (USA)
SPECIFICATIONS
model_number50.55
document_typePARTS LIST
document_source41387
component_quantity50
document_identification1444-187
end_item_identificationMISC NNRS
component_document_originINDUSTRIAL
component_document_page_number1
part_name_assigned_by_controlling_agencyMODEL 50.55 REBUILD ABV DIAPHRAGM KIT
NSN4820-01-493-6068
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 14444-187 · 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
•
MODEL NUMBER: 50.55
•
COMPONENT DOCUMENT PAGE NUMBER: 1
•
SUPPLY ITEMS AND QUANTITIES: 5310-01-344-7216 1/4 MED LOCKWASHER SST 8; 6660-01-012-5750 RESTR SCREW 1; 6660-01-012-6960 NEEDLE VALVE 1; 5360-00-583-4716 COMPRESSION SPRING 1; 4820-00-738-0341 NOZZLE SEAT ASSY 1; 4730-00-783-6559 RESTRICTION 3; 5305-00-844-3450 SEALING SCREW 2; 4810-00-678-0303 DIAPHRAGM 2; 6680-00-678-0305 TOP DIAPHRAGM ASSY 1; 5330-00-870-5359 GASKET 2; 5355-01-191-2844 POINTER 1; 4730-01-205-9448 NOZZLE 1; 4820-00-0972-9791 TOP DIAPH ASSY 1; 5342-01-191-4514 CUT OFF PLATE 2; 5310-01-013-8626 WSHR .140X.38X.072 BRS
•
NONSUPPLY ITEMS AND QUANTITIES: 41387 1-6818 DX.125 TYPE U DRIVESCREW SST 8; 1-7740 1/4-2D HEX NUT SST 6; 1-5900-416 SERVICE KIT INSTRUCTION CARD 1; 2938-147 O RING, 0.114IDX.070W, GRPHTD 2; 2938-148 O RING, 0.208IDX.070, GRPHTD 2; X6095 PLASTIC BAG .004X.3.0X5.0 1 W
•
COMPONENT QUANTITY: 50
•
DOCUMENT SOURCE: 41387
•
COMPONENT DOCUMENT ORIGIN: INDUSTRIAL
TECHNICAL CHARACTERISTICS (FLIS)
MODEL NUMBER50.55
COMPONENT DOCUMENT PAGE NUMBER1
SUPPLY ITEMS AND QUANTITIES5310-01-344-7216 1/4 MED LOCKWASHER SST 8; 6660-01-012-5750 RESTR SCREW 1; 6660-01-012-6960 NEEDLE VALVE 1; 5360-00-583-4716 COMPRESSION SPRING 1; 4820-00-738-0341 NOZZLE SEAT ASSY 1; 4730-00-783-6559 RESTRICTION 3; 5305-00-844-3450 SEALING SCREW 2; 4810-00-678-0303 DIAPHRAGM 2; 6680-00-678-0305 TOP DIAPHRAGM ASSY 1; 5330-00-870-5359 GASKET 2; 5355-01-191-2844 POINTER 1; 4730-01-205-9448 NOZZLE 1; 4820-00-0972-9791 TOP DIAPH ASSY 1; 5342-01-191-4514 CUT OFF PLATE 2; 5310-01-013-8626 WSHR .140X.38X.072 BRS
PART NAME ASSIGNED BY CONTROLLING AGENCYMODEL 50.55 REBUILD ABV DIAPHRAGM KIT
NONSUPPLY ITEMS AND QUANTITIES41387 1-6818 DX.125 TYPE U DRIVESCREW SST 8; 1-7740 1/4-2D HEX NUT SST 6; 1-5900-416 SERVICE KIT INSTRUCTION CARD 1; 2938-147 O RING, 0.114IDX.070W, GRPHTD 2; 2938-148 O RING, 0.208IDX.070, GRPHTD 2; X6095 PLASTIC BAG .004X.3.0X5.0 1 W
COMPONENT QUANTITY50
DOCUMENT SOURCE41387
COMPONENT DOCUMENT ORIGININDUSTRIAL
DOCUMENT IDENTIFICATION1444-187
END ITEM IDENTIFICATIONMISC NNRS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
CL115Interchangeable
interchangeable cross-reference
interchangeable
290025Interchangeable
interchangeable cross-reference
interchangeable
SCD10171Interchangeable
interchangeable cross-reference
interchangeable
BBR6-25-300TInterchangeable
interchangeable cross-reference
interchangeable
39D114A1Interchangeable
interchangeable cross-reference
interchangeable
123012Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy 14444-187?
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 14444-187?
14444-187 is a PARTS KIT,DIAPHRAGM REPLACEMENT.
What parts can replace 14444-187?
There are 6 known substitutes for 14444-187: CL115, 290025, SCD10171 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 14444-187?
14444-187 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-493-6068. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 14444-187

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026