Part identity

R503

Valve Regulating Fl

Los Angeles Resistor Co

Avg quote: 14 minFulfilled from Anaheim, CAAS9120:2025 · ISO 9001 · FAA AC 00-56BC of C, lot & date code with every line

Part description

Valve Regulating Fl

ASAP supports this specific part for replacement, spare-pool replenishment, retrofit, and urgent maintenance requirements. Quote requests can include alternate MPN, condition preferences, certification needs, and plant-specific receiving instructions so procurement gets a clear sourcing response before purchase.

Specifications

MPN
R503
Item name
Valve Regulating Fl
Manufacturer code
03856
Manufacturer
Los Angeles Resistor Co

Certifications & documentation

  • UL Recognized
  • CE
  • C of C available on request
LA

Manufacturer

Los Angeles Resistor Co

Authorized-distributor or qualified-aftermarket source. Parts shipped from this manufacturer include full traceability paperwork and counterfeit-mitigation per SAE AS6081.

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NSN Information for Part Number R503 with NSN 4820-00-664-6655, 4820006646655

NSNFSCNIINCLSHazmatDEMILCancelled NSN
4820006646655

Item Description:

Valve Regulating Fl

48200066466550N
CIICHCCESDPMICCriticalityENAC
U U
Part NumberISCRNVCRNCCHCCMSDSSADC
R503695

Characteristics Data of NSN 4820-00-664-6655, 4820006646655

MRCCriteriaCharacteristic
AAFZBODY MATERIALALUMINUM ALLOY
AAQLBODY STYLEANGLE
ABFFFURNISHED ITEMSFLOWMETER AND INLET PRESSURE GAGE
ACKLMEDIA FOR WHICH DESIGNEDARGON AND HELIUM AND NITROGEN, GASEOUS
ACKMFIRST END CONNECTION TYPETHREADED INTERNAL TUBE
ACKNFIRST END STYLE DESIGNATORHIGH PRESSURE FLARE (USED WITH MALE THREADED STYLE NO. 39)
ACLHFIRST END OUTSIDE DIAMETER TUBE ACCOMMODATED0.375 INCHES NOMINAL
ACLJFIRST END THREAD SIZE AND SERIES/TYPE DESIGNATOR5/8-18 UNF
ACLKFIRST END THREAD CLASS2B
ACLLFIRST END THREAD DIRECTIONRIGHT-HAND
ACLRSECOND END RELATIONSHIP WITH FIRST ENDNOT IDENTICAL
ACLSSECOND END CONNECTION TYPETHREADED EXTERNAL GAS CYLINDER
ACLTSECOND END STYLE DESIGNATORSWIVEL NUT, FLARED
ACMQSECOND END THREAD SIZE AND SERIES/TYPE DESIGNATOR0.960-14 NGO
ACMSSECOND END THREAD DIRECTIONRIGHT-HAND
ADQUFLOW CONTROL DEVICENEEDLE
ADQVFLOW CONTROL DEVICE MATERIALBRASS
ADQZEND CONNECTION QUANTITY2
AEVNREGULATION TYPE1ST STAGE AUTOMATIC, 2ND STAGE MANUAL
AEVPMANUAL CONTROL METHODKNOB
AEVRVALVE LOADING METHODSPRING
AEWAOUTLET PRESSURE SETTING50.0 POUNDS PER SQUARE INCH
AEWFFILTERINCLUDED
AZKQTEMP RATING-40.0 DEG FAHRENHEIT MINIMUM AND 165.0 DEG FAHRENHEIT MAXIMUM
Integrated Electromechanicals

Industrial automation, control, and electromechanical components. Over 2 billion parts across 5,100+ manufacturers. Quotes back in 15 minutes, 24/7 — fulfilled from Anaheim, California.

Certifications

  • AS9120:2025
  • ISO 9001:2015
  • FAA AC 00-56B
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USA fulfillment. Every order shipped from our Anaheim, California operations. Counterfeit-mitigation aligned to SAE AS5553 / AS6081.

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  • AS9120:2025
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