U21 Series Regulators
U21 Series Regulators
GENTEC U21 series regulators are hand adjustable, pressure reducing apparatus for applications of any non-corrosive, or toxic gases. Our metal-to-metal diaphragm to body seal is designed to minimize leakage and to provide excellent accuracy and longevity.Features316L stainless steel body
Metal to metal diaphragm to body seal
Easy front panel and rear bracket mounting
Gauge parts are standard with 1/4" face seal male, and the internal 1/4" face seal female is also available
Full internal electropolish
Cleaned, assembled and packaged for ultra high purity semiconductor applications
High cycle life
100% Helium leak tested
Materials of Construction* WetttedBody - 316L stainless steelSeat - PCTFE, VespelDiaphragm - 316L stainless steelPoppet - 316 stainless steelRemaining Part - 316 stainless steel*Non-wettedNut - 316 stainless steelCap - nickel plated brassKnob - ABS PlasticOperating ConditiosMaximum inlet pressure - 500 psig (35 barg), 3000 psig (206 barg)Outlet pressure - 0-25 psig (1.7 barg), 0-50 psig (3 barg), 0-100 psig (7 barg), 0-250 psig (17 barg), 0-500 psig (35 barg)Temperature - -40F to 165F (-40C to 74C)Functional PerformanceFlow Capacity - Cv=0.14Designed Leak Rate:Inboard Leakage - 2 x 10-8 atm cc/sec HeOutboard Leakage - 2 x 10-9 atm cc/sec HeLeakage across seat - 4 x 10-8 atm cc/sec HeDesigned Proof Pressure - 150% of maximum rated pressureDesigned Burst Pressure - 400% of maximum rated pressureSurface FinishStandard Ra - 20 uin (Assembled, bagged, and sealed in cleanroom)Optional Ra (EP) - 10 uin (Assembled, double bagged, and sealed in class 10 cleanroom)Internal Volume4.6cc
