Page 245 - Praxair - Specialty Gases and Equipment Reference Guide

4012 Regulators

Critical Purity Regulators for Non-Corrosive Service

Dual Stage Brass Barstock Body, Six-Port
Configuration, 316 Stainless Steel Diaphragm
The 4012 Series regulators are intended for primary pressure
control of non-corrosive, critical purity or liquefied gases 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
■ Brass Barstock Body ■ Outlet Pressure Ranges ■ 316 Stainless Steel ■ Pipe Away Relief Valve –
Controlled surface integrity 0-15 to 0-250 psig Diaphragm 1/4" FNPT
Broad range of applications No inboard diffusion Safely vent exhausted gases
■ Front Panel Mountable
Easy installation ■ Metal-to-Metal Diaphragm ■ Low Wetted Volume
Seal Minimal purge requirements
Reduces possibility of gas
contamination

Specifications Materials
■ Maximum Inlet Pressure ■ Ports ■ Body ■ Filter
3000 psig (210 bar) 1/4" FNPT Brass barstock 10 micron sintered bronze
4500 psig (300 bar) optional
■ Helium Leak Integrity ■ Bonnet ■ Diaphragm
-9
■ Temperature Range 1 x 10 scc/sec Brass barstock 316 stainless steel
o
o
-40 F to 165 F ■ Cv ■ Seat ■ Internal Seals
o
o
(-40 C to 74 C) 0.05 First stage – PTFE Teflon ® Teflon ®
■ Gauges ■ Weight Second stage – CTFE with
2" diameter brass 5.4 lb (2.5 kg) 4500 psig inlet option
chrome-plated
Section E – Gas Handling Equipment
Ordering Information – Series PRS4012ABCD-CGA Highlighted selection indicates most popular model
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 8: 0-6000 psig* 4: Diaphragm Valve 1/4" MNPT (bar/psi Gauges) available
5: Needle Valve 1/4" MNPT 4: Cleanroom Assembly
6: 1/8" Tube Fitting (psi/kPa Gauges)
7: 3/8" Tube Fitting 5: Cleanroom Assembly
* Maximum inlet pressure 4500 psig 8: Diaphragm Valve 1/8" Tube Fitting (bar/psi Gauges)
(300 bar) with CTFE 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•244 1-877-PRAXAIR www.praxairdirect.com