DH1

Dome Pressure Regulator

Dome pressure regulators are characterised by an accurate regulation and a large throughput.

The dome pressure regulator works according to the principle of the pressure balance between dome pressure and outlet pressure.

A large independence from fluctuation of the inlet pressure is reached with a balanced poppet.

If the dome pressure regulator is used for the pressure control of gases, the dome pressure can controlled by needle valves.

For the pressure regulation of liquids and aggressive gases, the dome can be filled externally with compressed air or nitrogen by means of a pilot pressure regulator.

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Standard Specification

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Technical Details
Application Area
Order Details

Body:	brass or stainless steel
Seat:	PCTFE
Max. inlet pressure:	420 bar
Outlet pressure ranges:	1.0-380 bar
Operating temp.:	-20°C to +60°C
Connections:	in-/outlet: G 1". gauge: G 1/4". dome screw: G 1/8".

The dome pressure regulator is used as a line pressure regulator.

Without exchanging parts it is suitable for a large outlet pressure range.

Independent of the used material the pressure regulator is applicable for different gases and liquids.

Urgently recommend the connection of a fine filter with max. 40 μ at the inlet of the pressure regulator to protect following components with suitable relief valves against inadmissibly high pressures.

To identify the correct order code for your DH1

Start with the model number, then add the appropriate number options from columns A, B, C, D & E in the table below followed by the gas to be used.

DH1-1-0-1-0-0-Argon specifies a DH1 model in brass with Ø 6.35 seat, EPDM diaphragm, no gauges & G 1" female part inlet/outlet, for use with Argon gas.

A	B	C	D	E
Material	Seat	Diaphragm	Gauges	Inlet/Outlet Options
1 = brass	0= Ø 6.35	1 = EPDM	0 = none	0 = G1" f
2 = stainless steel	1 = Ø 12.7 (balanced)	2 = viton	1 = with inlet and outlet gauges