Page 251 - Praxair - Specialty Gases and Equipment Reference Guide

3012 Regulators

High Purity Regulators for Non-Corrosive Service

Dual Stage Nickel-Plated Brass Barstock Body,
Four-Port Configuration, 316 Stainless Steel
Diaphragm
The 3012 Series regulators are intended for primary pressure
control of non-corrosive, high purity or liquefied gases. It is
recommended for applications requiring constant delivery
pressure control, regardless of supply pressure.

Typical Applications
■ EPA Protocol gases ■ High purity chamber
■ Gas and liquid chromatography pressurization
FID, GC, HID, PID, FPO, RD, ■ Petro/Chemical Industry
ECD ■ Purge gases
■ Ultra high purity carrier gases ■ Laboratory analysis
■ Zero, span, and calibration
gases

Features and Benefits
■ Nickel-Plated Brass ■ 10 Micron Filtration ■ 316 Stainless Steel ■ Convoluted Diaphragm
Barstock Body ■ Outlet Pressure Ranges Diaphragm Smooth pressure transition
Controlled surface integrity No inboard diffusion
0-15 to 0-250 psig
■ Front Panel Mountable Broad range of applications ■ Low Wetted Volume
Easy Installation Minimal purge requirements
Specifications Materials
■ Maximum Inlet Pressure ■ Ports ■ Body ■ Filter
3000 psig (210 bar) 1/4" FNPT Nickel-plated brass barstock 10 micron sintered bronze
■ Temperature Range ■ Helium Leak Integrity ■ Bonnet ■ Diaphragm
-40 °F to 165 °F 1 x 10 scc/sec Nickel-plated brass barstock 316 stainless steel
-8
(-40 °C to 74 °C)
■ Cv ■ Seat ■ Internal Seals
■ Gauges .05 First Stage – Teflon ® Teflon ®
2" diameter Second Stage – PTFE
chrome-plated brass ■ Weight
4.8 lb (2.2 kg)
Ordering Information — Series PRS3012ABCD-CGA Highlighted selection indicates most popular model
Section E – Gas Handling Equipment
A B C D CGA
Outlet Pressure Outlet Gauge Inlet Gauge Outlet Assemblies Assembly/Gauges Inlet Connections
1: 0-15 psig 30"-0-30 psig 0: None 0: 1/4" FNPT Port 0: Bare Body CGA,
2: 0-50 psig 30"-0-100 psig 3: 0-4000 psig 1: 1/4" MNPT 1: Standard Assembly DIN 477,
3: 0-100 psig 30"-0-200 psig 5: 0-1000 psig 2: 1/4" Tube Fitting (psi/kPa Gauges) BS 341
4: 0-250 psig 0-400 psig 6: 0-300 psig 3: Diaphragm Valve 1/4" Tube Fitting 2: Standard Assembly and others
7: 0-150 psig 30"-0-200 psig 7: 0-400 psig 4: Diaphragm Valve 1/4" MNPT (bar/psi Gauges) available
5: Needle Valve 1/4" MNPT
6: 1/8" Tube Fitting
7: 3/8" Tube Fitting
8: Diaphragm Valve 1/8" Tube Fitting
9: Diaphragm Valve 1/4" FNPT

Option Part Number Description
Panel Mount Kit PRS5500002T To mount the regulator using threads on the bonnet.
Captured Vent – Standard Equipment PRSSG6705 For easy piping of vented gases to a safe location in the event
3000 and 4000 1/16" FNPT of diaphragm failure.
Helium Leak Certification PRS4760002 Inboard helium leak certification to less than 1 x 10 scc/sec
-8
Protocol Station Add Letter “M” after CGA See page E •281 for details
Protocol Switchover Station Add Letter “C” after CGA See page E •282 for details
Protocol Switchover Station with Alarm Add Letter “G” after CGA See page E •283 for details
Protocol Alarm Station Add Letter “A” after CGA See page E •283 for details
Deep Purge Add Letter “D” after CGA See page E •279 for details

E•250 1-877-PRAXAIR www.praxairdirect.com