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Can I buy direct from HYDAC?

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​HYDAC works through a network of distributors. This list of distributors can be found on our website at: Distributor

Are SAB blocks still available?

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No, the SAB block has been replaced by our model SAF block. It is functionally equivalent but not dimensionally equivalent. The pressure relief valve design was modified making it so that the old & new relief valves are no longer interchangeable.

Can I replace an SAF20M12…with an SAF20M16…?

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Yes, the only difference between the two blocks is the seal material. The block with the ”M12” uses Buna N seals and the block with the ”M16” uses Fluoro-elastomer seals. We build our safety blocks in Bethlehem, PA utilizing Fluoro-elastomer seals and our German manufacturing uses Buna N seals.

How do I install a permanent gauging block?

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​Instructions are located on our website at: Catalogs, select Accumulators catalog or search Permanent Gauging Blocks from the search bar up top. Please pay special attention to the gas core removal section.

Why is there an allen wrench in my FPK charging kit?

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The allen wrench should be used to initially break the gas valve seal prior to installing the FPK charging unit. DO NOT USE THE CHARGING UNIT ITSELF TO BREAK THE SEAL AS INTERNAL COMPONENTS WILL BREAK REQUIRING COMPLETE REPLACEMENT OF THE FPK. Please consult the ”Maintenance” section of Charging & Gauging Kits on our website

Can I buy an FPU charging kit?

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Yes, these FPU charging kits are manufactured in Germany and typically have a 10-12 week lead time. However, the FPU charging kit can be directly replaced with our FPK charging kit saving you on both price and delivery. The FPU-1 kit is basically an FPK charging and gauging kit with an ”A” adapter and a ”G” adapter included. Most FPK charging kits are kept in stock in Bethlehem, PA.

If my nitrogen gas bottle has a pressure reducer/regulator connected to it, what adapter will I need in order for it to work with a charging & gauging unit?

Comments Off on If my nitrogen gas bottle has a pressure reducer/regulator connected to it, what adapter will I need in order for it to work with a charging & gauging unit?

For domestic use only, each charging & gauging kit should come with a G4 or G4.1 adapter that would typically connect directly to your CGA 580 gas bottle (3000 PSI) or CGA 680 gas bottle (5000 PSI) respectively. However, with a pressure regulator connected to the nitrogen gas bottle, an adapter is required to connect to the G4 or G4.1 hose connection. See image below for proper adapter selection. We also offer various G adapters for non-domestic usage which can be found in the catalog at: Catalogs > selecting Accumulators from the list or searching Adapters under Charging & Gauging Units from the search bar.

What is the pressure gauge connection on a standard permanent gauging block and various charging & gauging units? What are the pressure gauge part numbers per product?

Comments Off on What is the pressure gauge connection on a standard permanent gauging block and various charging & gauging units? What are the pressure gauge part numbers per product?

See list below.

PERM GAUGING BLOCK VER 1 or 4 (Bottom Repairable): G1/4 BSPP connection (Back Mounted Gauge)

PART # DESCRIPTION / MODEL CODE
606741 PRESSURE GAUGE 60 BAR/0 to 850 PSI
606743 PRESSURE GAUGE 100 BAR/0 to 1450PSI
606745 PRESSURE GAUGE 160 BAR/0 to 2300PSI
606747 PRESSURE GAUGE 250 BAR/0 to 3600PSI
606749 PRESSURE GAUGE 400 BAR/0 to 5800PSI

FPS & FPK CHARGING & GAUGING UNITS: G1/8 BSPP connection (Back Mounted Gauge)

PART # DESCRIPTION / MODEL CODE
606759 PRESSURE GAUGE E63/10/0 to 145 PSI
606760 PRESSURE GAUGE E63/25/0 to 350 PSI
606761 PRESSURE GAUGE E63/100/0 to 1400PSI
606762 PRESSURE GAUGE E63/250/0 to3600PSI
606763 PRESSURE GAUGE E63/400/0 to 5800PSI

FPO CHARGING & GAUGING UNIT: G1/4 NPT connection (Bottom Mounted Gauge)

PART # DESCRIPTION / MODEL CODE
2701622 PRESSURE GAUGE 3000 PSI BOTTOM MOUNT(FP0)