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USA Representatives

WELKER > USA Representatives

Engineered Solutions. Find a Representative Today.

Contact a rep today for engineered solutions. Our authorized representatives are knowledgeable in their respective applications and can provide an engineered solution from Welker’s proven portfolio of products and systems. They can also provide you peace of mind with technical support backed by Welker.

The listed companies are Welker’s Authorized Representatives. If you do not see the name of a company listed below, they are not a Welker authorized representative.
TerritoryCompanyContactPhoneWebsiteProduct Categories
Alabama (North)Control Southern770-495-3100controlsouthern.comNatural Gas Spot & Composite
Natural Gas Sample Conditioning
LNG Sampling
Natural Gas Control
Odorization
Chemical Infusion
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
AlabamaJohn H Carter225-751-3788johnhcarter.comNatural Gas Spot & Composite Sampling
Natural Gas Sample Conditioning
LNG Sampling
Natural Gas Control
Light Liquids Sampling
Refined Products Sampling
Crude Oil Sampling
Petrochemical Sampling
Odorization
Chemical Infusion
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
AlaskaAlaska Instruments907-561-7511alaskainstrument.comNatural Gas Spot & Composite Sampling
Natural Gas Sample Conditioning
Light Liquids Sampling
Crude Oil Sampling
Filters
Instrumentation
ArizonaCaltrol925-226-0248caltrol.comNatural Gas Spot & Composite Sampling
Natural Gas Sample Conditioning
Natural Gas Control
Light Liquids Sampling
Refined Products Sampling
Crude Oil Sampling
Petrochemical Sampling
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
ArkansasJohn H Carter225-751-3788johnhcarter.comNatural Gas Spot & Composite Sampling
Natural Gas Sample Conditioning
LNG Sampling
Natural Gas Control
Light Liquids Sampling
Refined Products Sampling
Crude Oil Sampling
Petrochemical Sampling
Odorization
Chemical Infusion
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
ArkansasKGM918-794-9494kgmgas.comOdorization
Chemical Infusion
CaliforniaCaltrol925-226-0248caltrol.comNatural Gas Spot & Composite Sampling
Natural Gas Sample Conditioning
Natural Gas Control
Light Liquids Sampling
Refined Products Sampling
Crude Oil Sampling
Petrochemical Sampling
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
CaliforniaWestern Gas Technologies916-630-9369westerngastech.comNatural Gas Spot & Composite Sampling
Natural Gas Sample Conditioning
Natural Gas Control
Odorization
Chemical Infusion
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
ColoradoApex Instruments303-804-0667apex-instruments.comNatural Gas Spot & Composite Sampling
Natural Gas Sample Conditioning
Light Liquids Sampling
Refined Products Sampling
Crude Oil Sampling
Petrochemical Sampling
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
ColoradoPower Controls303-777-3100powercontrols.comNatural Gas Spot & Composite Sampling
Light Liquids Sampling
Refined Products Sampling
Crude Oil Sampling
Odorization
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
Connecticut (South)Pro-Quip973-253-0100pro-quip.comNatural Gas Spot & Composite Sampling
Natural Gas Sample Conditioning
LNG Sampling
Natural Gas Control
Light Liquids Sampling
Refined Products Sampling
Crude Oil Sampling
Petrochemical Sampling
Odorization
Chemical Infusion
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
DelawarePro-Quip973-253-0100pro-quip.comNatural Gas Spot & Composite Sampling
Natural Gas Sample Conditioning
LNG Sampling
Natural Gas Control
Light Liquids Sampling
Refined Products Sampling
Crude Oil Sampling
Petrochemical Sampling
Odorization
Chemical Infusion
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
District of ColumbiaPro-Quip973-253-0100pro-quip.comNatural Gas Spot & Composite Sampling
Natural Gas Sample Conditioning
LNG Sampling
Natural Gas Control
Light Liquids Sampling
Refined Products Sampling
Crude Oil Sampling
Petrochemical Sampling
Odorization
Chemical Infusion
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
Florida (Except Panhandle)Control Southern770-495-3100controlsouthern.comNatural Gas Spot & Composite
Natural Gas Sample Conditioning
LNG Sampling
Natural Gas Control
Odorization
Chemical Infusion
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
Florida (Panhandle)John H Carter225-751-3788johnhcarter.comNatural Gas Spot & Composite Sampling
Natural Gas Sample Conditioning
LNG Sampling
Natural Gas Control
Light Liquids Sampling
Refined Products Sampling
Crude Oil Sampling
Petrochemical Sampling
Odorization
Chemical Infusion
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
GeorgiaControl Southern770-495-3100controlsouthern.comNatural Gas Spot & Composite
Natural Gas Sample Conditioning
LNG Sampling
Natural Gas Control
Odorization
Chemical Infusion
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
GuamCaltrol925-226-0248caltrol.comNatural Gas Spot & Composite Sampling
Natural Gas Sample Conditioning
Natural Gas Control
Light Liquids Sampling
Refined Products Sampling
Crude Oil Sampling
Petrochemical Sampling
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
HawaiiCaltrol925-226-0248caltrol.comNatural Gas Spot & Composite Sampling
Natural Gas Sample Conditioning
Natural Gas Control
Light Liquids Sampling
Refined Products Sampling
Crude Oil Sampling
Petrochemical Sampling
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
IdahoRocky Mountain801-268-6028rckymtn.comNatural Gas Spot & Composite Sampling
Natural Gas Sample Conditioning
Light Liquids Sampling
Refined Products Sampling
Crude Oil Sampling
Petrochemical Sampling
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
IdahoWestern Gas Technologies916-630-9369westerngastech.comNatural Gas Spot & Composite Sampling
Natural Gas Sample Conditioning
Natural Gas Control
Odorization
Chemical Infusion
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
IllinoisKGM918-794-9494kgmgas.comOdorization
Chemical Infusion
IllinoisMid American Technologies734-451-0060Natural Gas Spot & Composite Sampling
Natural Gas Sample Conditioning
LNG Sampling
Natural Gas Control
Light Liquids Sampling
Refined Products Sampling
Crude Oil Sampling
Petrochemical Sampling
Odorization
Chemical Infusion
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
IndianaKGM918-794-9494kgmgas.comOdorization
Chemical Infusion
IndianaMid American Technologies734-451-0060Natural Gas Spot & Composite Sampling
Natural Gas Sample Conditioning
LNG Sampling
Natural Gas Control
Light Liquids Sampling
Refined Products Sampling
Crude Oil Sampling
Petrochemical Sampling
Odorization
Chemical Infusion
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
IowaKGM918-794-9494kgmgas.comOdorization
Chemical Infusion
KansasApex Instruments303-804-0667apex-instruments.comNatural Gas Spot & Composite Sampling
Natural Gas Sample Conditioning
Light Liquids Sampling
Refined Products Sampling
Crude Oil Sampling
Petrochemical Sampling
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
KansasKGM918-794-9494kgmgas.comOdorization
Chemical Infusion
KentuckyA. Blair Powell412-347-0446abpowell.comNatural Gas Spot & Composite Sampling
Natural Gas Sample Conditioning
Light Liquids Sampling
Refined Products Sampling
Crude Oil Sampling
Petrochemical Sampling
Odorization
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
KentuckyKGM918-794-9494kgmgas.comOdorization
Chemical Infusion
LouisianaJohn H Carter225-751-3788johnhcarter.comNatural Gas Spot & Composite Sampling
Natural Gas Sample Conditioning
LNG Sampling
Natural Gas Control
Light Liquids Sampling
Refined Products Sampling
Crude Oil Sampling
Petrochemical Sampling
Odorization
Chemical Infusion
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
LouisianaKGM918-794-9494kgmgas.comOdorization
Chemical Infusion
MarylandPro-Quip973-253-0100pro-quip.comNatural Gas Spot & Composite Sampling
Natural Gas Sample Conditioning
LNG Sampling
Natural Gas Control
Light Liquids Sampling
Refined Products Sampling
Crude Oil Sampling
Petrochemical Sampling
Odorization
Chemical Infusion
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
MichiganKGM918-794-9494kgmgas.comOdorization
Chemical Infusion
MichiganMid American Technologies734-451-0060Natural Gas Spot & Composite Sampling
Natural Gas Sample Conditioning
LNG Sampling
Natural Gas Control
Light Liquids Sampling
Refined Products Sampling
Crude Oil Sampling
Petrochemical Sampling
Odorization
Chemical Infusion
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
MinnesotaMid American Technologies734-451-0060Natural Gas Spot & Composite Sampling
Natural Gas Sample Conditioning
LNG Sampling
Natural Gas Control
Light Liquids Sampling
Refined Products Sampling
Crude Oil Sampling
Petrochemical Sampling
Odorization
Chemical Infusion
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
MississippiJohn H Carter225-751-3788johnhcarter.comNatural Gas Spot & Composite Sampling
Natural Gas Sample Conditioning
LNG Sampling
Natural Gas Control
Light Liquids Sampling
Refined Products Sampling
Crude Oil Sampling
Petrochemical Sampling
Odorization
Chemical Infusion
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
MissouriApex Instruments303-804-0667apex-instruments.comNatural Gas Spot & Composite Sampling
Natural Gas Sample Conditioning
Light Liquids Sampling
Refined Products Sampling
Crude Oil Sampling
Petrochemical Sampling
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
MissouriKGM918-794-9494kgmgas.comOdorization
Chemical Infusion
MontanaPower Controls303-777-3100powercontrols.comNatural Gas Spot & Composite Sampling
Light Liquids Sampling
Refined Products Sampling
Crude Oil Sampling
Odorization
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
MontanaRocky Mountain801-268-6028rckymtn.comNatural Gas Spot & Composite Sampling
Natural Gas Sample Conditioning
Light Liquids Sampling
Refined Products Sampling
Crude Oil Sampling
Petrochemical Sampling
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
NebraskaApex Instruments303-804-0667apex-instruments.comNatural Gas Spot & Composite Sampling
Natural Gas Sample Conditioning
Light Liquids Sampling
Refined Products Sampling
Crude Oil Sampling
Petrochemical Sampling
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
NebraskaKGM918-794-9494kgmgas.comOdorization
Chemical Infusion
Nevada (Except Northeast)Caltrol925-226-0248caltrol.comNatural Gas Spot & Composite Sampling
Natural Gas Sample Conditioning
Natural Gas Control
Light Liquids Sampling
Refined Products Sampling
Crude Oil Sampling
Petrochemical Sampling
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
NevadaRocky Mountain801-268-6028rckymtn.comNatural Gas Spot & Composite Sampling
Natural Gas Sample Conditioning
Light Liquids Sampling
Refined Products Sampling
Crude Oil Sampling
Petrochemical Sampling
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
NevadaWestern Gas Technologies916-630-9369westerngastech.comNatural Gas Spot & Composite Sampling
Natural Gas Sample Conditioning
Natural Gas Control
Odorization
Chemical Infusion
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
New JerseyPro-Quip973-253-0100pro-quip.comNatural Gas Spot & Composite Sampling
Natural Gas Sample Conditioning
LNG Sampling
Natural Gas Control
Light Liquids Sampling
Refined Products Sampling
Crude Oil Sampling
Petrochemical Sampling
Odorization
Chemical Infusion
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
New Mexico (Southwest)Caltrol925-226-0248caltrol.comNatural Gas Spot & Composite Sampling
Natural Gas Sample Conditioning
Natural Gas Control
Light Liquids Sampling
Refined Products Sampling
Crude Oil Sampling
Petrochemical Sampling
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
New MexicoApex Instruments303-804-0667apex-instruments.comNatural Gas Spot & Composite Sampling
Natural Gas Sample Conditioning
Light Liquids Sampling
Refined Products Sampling
Crude Oil Sampling
Petrochemical Sampling
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
New Mexico (Northwest)Power Controls303-777-3100powercontrols.comNatural Gas Spot & Composite Sampling
Light Liquids Sampling
Refined Products Sampling
Crude Oil Sampling
Odorization
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
New MexicoKGM918-794-9494kgmgas.comOdorization
Chemical Infusion
New York (NYC Metro)Pro-Quip973-253-0100pro-quip.comNatural Gas Spot & Composite Sampling
Natural Gas Sample Conditioning
LNG Sampling
Natural Gas Control
Light Liquids Sampling
Refined Products Sampling
Crude Oil Sampling
Petrochemical Sampling
Odorization
Chemical Infusion
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
North DakotaApex Instruments303-804-0667apex-instruments.comNatural Gas Spot & Composite Sampling
Natural Gas Sample Conditioning
Light Liquids Sampling
Refined Products Sampling
Crude Oil Sampling
Petrochemical Sampling
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
North Dakota (West)Power Controls303-777-3100powercontrols.comNatural Gas Spot & Composite Sampling
Light Liquids Sampling
Refined Products Sampling
Crude Oil Sampling
Odorization
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
OhioA. Blair Powell412-347-0446abpowell.comNatural Gas Spot & Composite Sampling
Natural Gas Sample Conditioning
Light Liquids Sampling
Refined Products Sampling
Crude Oil Sampling
Petrochemical Sampling
Odorization
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
OhioKGM918-794-9494kgmgas.comOdorization
Chemical Infusion
Ohio (West)Mid American Technologies734-451-0060Natural Gas Spot & Composite Sampling
Natural Gas Sample Conditioning
LNG Sampling
Natural Gas Control
Light Liquids Sampling
Refined Products Sampling
Crude Oil Sampling
Petrochemical Sampling
Odorization
Chemical Infusion
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
OklahomaApex Instruments303-804-0667apex-instruments.comNatural Gas Spot & Composite Sampling
Natural Gas Sample Conditioning
Light Liquids Sampling
Refined Products Sampling
Crude Oil Sampling
Petrochemical Sampling
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
OklahomaKGM918-794-9494kgmgas.comOdorization
Chemical Infusion
OregonWestern Gas Technologies916-630-9369westerngastech.comNatural Gas Spot & Composite Sampling
Natural Gas Sample Conditioning
Natural Gas Control
Odorization
Chemical Infusion
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
Pennsylvania (West)A. Blair Powell412-347-0446abpowell.comNatural Gas Spot & Composite Sampling
Natural Gas Sample Conditioning
Light Liquids Sampling
Refined Products Sampling
Crude Oil Sampling
Petrochemical Sampling
Odorization
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
Pennsylvania (East)Pro-Quip973-253-0100pro-quip.comNatural Gas Spot & Composite Sampling
Natural Gas Sample Conditioning
LNG Sampling
Natural Gas Control
Light Liquids Sampling
Refined Products Sampling
Crude Oil Sampling
Petrochemical Sampling
Odorization
Chemical Infusion
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
South DakotaApex Instruments303-804-0667apex-instruments.comNatural Gas Spot & Composite Sampling
Natural Gas Sample Conditioning
Light Liquids Sampling
Refined Products Sampling
Crude Oil Sampling
Petrochemical Sampling
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
Tennessee (East)Old Dominion804-598-7801olddominioncontrols.netNatural Gas Spot & Composite Sampling
Natural Gas Sample Conditioning
Natural Gas Control
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
Tennessee (East)Control Southern770-495-3100controlsouthern.comNatural Gas Spot & Composite
Natural Gas Sample Conditioning
LNG Sampling
Natural Gas Control
Odorization
Chemical Infusion
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
TexasApex Instruments303-804-0667apex-instruments.comNatural Gas Spot & Composite Sampling
Natural Gas Sample Conditioning
Light Liquids Sampling
Refined Products Sampling
Crude Oil Sampling
Petrochemical Sampling
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
TexasKGM918-794-9494kgmgas.comOdorization
Chemical Infusion
TexasRBI Solutions281-208-8898rbisolutions.comNatural Gas Spot & Composite Sampling
Natural Gas Sample Conditioning
LNG Sampling
Refined Products Sampling
Petrochemical Sampling
Filters
Instrumentation
UtahApex Instruments303-804-0667apex-instruments.comNatural Gas Spot & Composite Sampling
Natural Gas Sample Conditioning
Light Liquids Sampling
Refined Products Sampling
Crude Oil Sampling
Petrochemical Sampling
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
Utah (East)Power Controls303-777-3100powercontrols.comNatural Gas Spot & Composite Sampling
Light Liquids Sampling
Refined Products Sampling
Crude Oil Sampling
Odorization
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
UtahRocky Mountain801-268-6028rckymtn.comNatural Gas Spot & Composite Sampling
Natural Gas Sample Conditioning
Light Liquids Sampling
Refined Products Sampling
Crude Oil Sampling
Petrochemical Sampling
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
UtahWestern Gas Technologies916-630-9369westerngastech.comNatural Gas Spot & Composite Sampling
Natural Gas Sample Conditioning
Natural Gas Control
Odorization
Chemical Infusion
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
VirginiaOld Dominion804-598-7801olddominioncontrols.netNatural Gas Spot & Composite Sampling
Natural Gas Sample Conditioning
Natural Gas Control
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
Virginia (North)Pro-Quip973-253-0100pro-quip.comNatural Gas Spot & Composite Sampling
Natural Gas Sample Conditioning
LNG Sampling
Natural Gas Control
Light Liquids Sampling
Refined Products Sampling
Crude Oil Sampling
Petrochemical Sampling
Odorization
Chemical Infusion
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
WashingtonWestern Gas Technologies916-630-9369westerngastech.comNatural Gas Spot & Composite Sampling
Natural Gas Sample Conditioning
Natural Gas Control
Odorization
Chemical Infusion
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
West VirginiaA. Blair Powell412-347-0446abpowell.comNatural Gas Spot & Composite Sampling
Natural Gas Sample Conditioning
Light Liquids Sampling
Refined Products Sampling
Crude Oil Sampling
Petrochemical Sampling
Odorization
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
West Virginia (Northeast)Pro-Quip973-253-0100pro-quip.comNatural Gas Spot & Composite Sampling
Natural Gas Sample Conditioning
LNG Sampling
Natural Gas Control
Light Liquids Sampling
Refined Products Sampling
Crude Oil Sampling
Petrochemical Sampling
Odorization
Chemical Infusion
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
WisconsinMid American Technologies734-451-0060Natural Gas Spot & Composite Sampling
Natural Gas Sample Conditioning
LNG Sampling
Natural Gas Control
Light Liquids Sampling
Refined Products Sampling
Crude Oil Sampling
Petrochemical Sampling
Odorization
Chemical Infusion
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
WyomingApex Instruments303-804-0667apex-instruments.comNatural Gas Spot & Composite Sampling
Natural Gas Sample Conditioning
Light Liquids Sampling
Refined Products Sampling
Crude Oil Sampling
Petrochemical Sampling
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
WyomingPower Controls303-777-3100powercontrols.comNatural Gas Spot & Composite Sampling
Light Liquids Sampling
Refined Products Sampling
Crude Oil Sampling
Odorization
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation
WyomingRocky Mountain801-268-6028rckymtn.comNatural Gas Spot & Composite Sampling
Natural Gas Sample Conditioning
Light Liquids Sampling
Refined Products Sampling
Crude Oil Sampling
Petrochemical Sampling
Instrument Grade Natural Gas Conditioning System
Filters
Instrumentation