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Airgas® Model E444D350 Stainless Steel High Purity Two Stage Positive Seal Regulator With 1/4" FNPT Connection

Airgas® Model E444D350 Stainless Steel High Purity Two Stage Positive Seal Regulator With 1/4" FNPT Connection

By
Airgas

Airgas Part #:Y12E444D350-AG

Manufacturer Part #:E444D350


$1,891.61 /Each
Each

Item Details

  • These two-stage positive-seal regulators feature convoluted, Hastelloy® C-22 diaphragms that provide maximum sensitivity, minimum droop and a leak-tight bonnet seal. Type 316 stainless steel internal components are ultra-sonically cleaned and electropolished to a 32-Ra surface finish for applications where a contamination-free flow stream is critical. Optional 15 Ra electropolished with faceseal. A rugged, mechanical linkage connecting the diaphragm and valve stem significantly reduces the possibility of pressure creep. A PCTFE seat provides positive closure and is compatible with a wide range of mildly corrosive or corrosive gases. Each single-stage positive-seal regulator is designed with two 10 x 32 UNF-threaded body holes for bracket or panel mounting.

Features

  • Tied, Convoluted Diaphragm Design provides positive shutoff and minimizes creep.
  • Ultrasonic Cleansing and Electropolishing to a 32-Ra Surface Finish allows high-purity integrity and contamination-free flow stream. (15 Ra electro polished surface is optional with faceseal connections - not available with NPT or compression)
  • Large, Hastelloy® C22 Convoluted Diaphragm provides maximum sensitivity, minimum droop, and a leak-tight bonnet seal without the use of a contaminating soft seal.
  • PCTFE Seat permits positive seat closure and provides wide media compatibility range.
  • Diaphragm Packless Valve (with standard 1/4" Compression fitting) permits positive shutoff and flow control.
  • Optional Porting (consult Airgas) for special port configurations: butt-welded, zero-clearance fittings (VCR®, Vaculok®, UltraSeal®, etc.) or space saving, internally machined, high-purity porting compatible with fitting styles mentioned above.

Specifications

  • Maximum Rated Inlet Pressure: 3,500 psig
  • Outlet Pressure Ranges: 0-100 psig
  • Flow Capacity: Cv=0.04
  • Ambient Operating Temperature: -40° F to +165° F
  • Designed Leak Rate: 2 x10-8 ccs (helium)
  • Weight: 4 lbs
  • Ports: ¼" FNPT
  • Delivery Gauge: 0-200
  • Capacity: 300 scfh @ Max Delivery Pressure
  • Decay Inlet Characteristic: 1.17/100 psi

Product Attributes

Model

» E444D350

Usage

» High Purity

Material

» Stainless Steel

Regulator Type

» Two Stage Positive Seal Regulator

Inlet Connection

» 1/4" FNPT

Outlet Connection

» 1/4" Compression

Max Outlet Pressure

» 100 psig

Gauge Diameter

» 2 1/2"

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