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Airgas® Model E444D Stainless Steel High Purity Two Stage Positive Seal Regulator With 1/4" FNPT Connection
By
Airgas Part #:Y12E444D-AG
Manufacturer Part #:E444D
$1,891.61
Each
$1,891.61
/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
» E444DUsage
» High PurityMaterial
» Stainless SteelRegulator Type
» Two Stage Positive Seal RegulatorInlet Connection
» 1/4" FNPTOutlet Connection
» 1/4" CompressionMax Outlet Pressure
» 100 psigGauge Diameter
» 2 1/2"