To guarantee a good control characteristic of HD 550 even for low pressures piston diameters are different (depending on flow and pressure).
The outlet pressure of HD 550 is adjustable without strength even at high working pressures by capture vented construction and a control spindle with axial bearing.
HD 550 can be equipped optionally with inlet and outlet gauge.
To identify the correct order code for your HD550
Start with "HD550-", then add the appropriate number options from columns A, B, C, D, E & F in the table below followed by the gas to be used.
HD550-1-1-1-1-1-1-Argon specifies a HD550 model in brass with Ø 1,70 seat size, NBR Elastomer, 5-250 bar outlet pressure ranges, without capture venting & without guages, for use with Argon gas.
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A |
B
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C
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D |
E
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F
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Material |
Seat sizes |
Elastomer |
Outlet pressure ranges |
Capture venting
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Gauges |
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1 = brass |
1 = Ø 1,70 |
1 = NBR |
1 = 5 - 250 bar |
1 = none |
1 = without gauges |
2 = stainless steel
1.4404 |
2 = Ø 6,35 (balanced) |
2 = viton |
2 = 1 - 100 bar |
2 = with capture venting |
2 = outlet pressure gauge |
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3 = 1 - 50 bar
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3 = in- and outlet pressure gauges |
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SPECIAL GAS + EQUIPMENT CONSULTANTS
