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Basic Series

Pressure Ranges (QR4000)

Pressure Ranges (NPR4000)

Body Material

Flow Capacity

Seat Material

Porting

Outlet Gauge

Inlet Gauge

Port Style

Port Configuration

Optional Features

D = Dome Loaded - QR4000 only.
Not available with G or M options
M = Metal Knob (Black) Not available with D option. Required for tempera¬tures above 150º F
T = Hastelloy C-22® Trim Includes carrier and back-up washer
HP = 4000 psig Max Inlet Pressure For .15 Cv QR4003 and QR4015 with PCTFE seats only

QR4000

Configure a Veriflo QR4000 Series

The QR4000 is a high purity, high pressure non-tied diaphragm regulator. It utilizes a metal-to-metal diaphragm seal which provides enhanced leak integrity.

Product Features & Benefits:

VeriClean, Veriflo's custom low sulfur high purity 316L Stainless Steel enhances electropolishing, welding and corrosion resistance.
Unique compression member loads the seal to the body without requiring a threaded nozzle or additional seals to atmosphere.
Threadless internal nozzle assembly.
Metal-to-metal diaphragm to body seal assures high leak integrity.
Minimal particle generation and entrapment.
Positive upward and downward diaphragm stops.

The NPR4000 regulator is for applications involving negative delivery pressures with low pressure gas sources. Typical applications include the delivery of low pressure gases from liquid sources such as WF6, BCL3.