NOVA Swiss high-pressure valves, fittings, diaphragm compressors and pressure generators

NOVA Swiss valves up to 10,000 bar, N-Line valves, hydrogen components, MK diaphragm compressors and pressure generators. Selection by pressure and medium, quotation per project.

Needle valves with ATO and ATC pneumatic actuators

NOVA Swiss needle valves can be installed in both directions and seal both gases and liquids. The valve core is a specially shaped seat and a two-piece non-rotating stem, which avoids stem erosion. ATO or ATC air actuators use the same valve bodies and packing systems.

Bidirectional installation
Two-piece non-rotating stem
ATO and ATC actuators
Extreme: -60 °C to +200 °C

HSL 70 safety valves and bursting discs

NOVA Swiss safety valves protect high-pressure hydrogen circuits, with target pressures from 50/80 to 4,500 bar. Each valve is set to customer specifications and secured with a factory lead seal. Safety heads take different bursting discs for a range of burst pressures.

Target 50/80–4,500 bar
Temperature -10 °C to +250 °C
Vent port 1/4" NPT
Replaceable bursting discs

Check valves and BBV and DBV block valves

NOVA Swiss check valves seal gases and liquids with bonded metal/plastic seats. The seats are replaceable, so maintenance comes down to a seat change. BBV and DBV block valves let gauges be removed unpressurized while the line keeps running.

Bonded metal/plastic seats
BBV: 1/4" and 3/8"
DBV: 1/4", 3/8", 9/16"
Gauge removal in operation

SP and SD solenoid valves up to 1,000 bar

NOVA Swiss solenoid valves are designed for hydrogen and inert gases at operating pressures up to 1,000 bar. SP is pilot operated with KV 0.6 m³/h; SD is direct operated with KV 0.006 m³/h. The normally closed valve closes by itself if the current drops at the coil.

Up to 1,000 bar
SP: KV 0.6 m³/h
SD: KV 0.006 m³/h
Stainless steel body

N-Line valves for liquids up to 4,134 bar

N-Line is the NOVA Swiss range of needle, ball and check valves for liquid applications at pressures up to 4,134 bar. The quick-opening needle valve reaches full opening in 1-3/4 turns. Check valves come with a soft seat on a metal back-up or with a metal-to-metal seat.

Up to 4,134 bar
Full opening in 1-3/4 turns
Soft or metal seat
Vent holes for leak testing

Hydrogen components up to 1,380 bar

The NOVA Swiss hydrogen range covers needle, ball, check and solenoid valves, fittings and tubing up to 1,380 bar. Each valve body has a unique serial number. The 2-way manual ball valves serve medium-pressure systems and support bidirectional flow.

Up to 1,380 bar
Serial number on each body
2-way ball valves
Seamless cold drawn tubing

MK 1000 and MK 3000 diaphragm compressors

MK compressors bring nitrogen, argon, helium and hydrogen to 1,000 or 3,000 bar from a suction pressure of 20 to 200 bar. Double diaphragms separate the compression space from the crank mechanism, so the gas is not contaminated by oil. MK 1000 diaphragm plates last up to 2,500 hours.

1,000 / 3,000 bar discharge
Suction 20–200 bar
Plates up to 2,500 hours
Drive power 2.2 kW

Diesel fuel lines, accumulators and air starting parts

The second NOVA Swiss line is diesel engine components for ships, locomotives and generators: high-pressure fuel lines, common rail accumulators up to 3,400 bar, fuel line shielding and air starting components up to 40 bar. Most fuel lines undergo autofrettage.

Accumulators up to 3,400 bar
Air starting up to 40 bar
Fuel line shielding
Autofrettaged lines

How to choose NOVA Swiss valves and pressure sources

Selection starts with pressure and medium.

NOVA Swiss makes high-pressure components and systems for up to 10,000 bar: needle, check and block valves, fittings and tubing for gases and liquids; the N-Line for liquids up to 4,134 bar; hydrogen components up to 1,380 bar and SP and SD solenoid valves up to 1,000 bar.

The pressure source depends on the medium: MK diaphragm compressors bring pure gases to 1,000 or 3,000 bar, and pressure generators reach 3,000 bar on gas and up to 14,000 bar on liquids. Nova Werke AG supports systems with on-site installation, commissioning, user training and servicing.

Valves, fittings and exclusive products

Needle valves install in both directions, and ATO and ATC actuators use the same bodies and packing. Check valves have replaceable bonded metal/plastic seats, and BBV and DBV block valves let gauges be removed while the line keeps running. HSL 70 safety valves are set from 50/80 to 4,500 bar.

Connections seal metal to metal, without gaskets. On request NOVA Swiss builds high-pressure cylinders and vessels: Cylinder I handles liquids and gases up to 10,000 bar.

Diaphragm compressors and pressure generators

MK 1000 and MK 3000 compressors handle nitrogen, argon, helium and, in a dedicated version, hydrogen from a suction pressure of 20 to 200 bar. Diaphragms keep the gas away from the crank mechanism, with a diaphragm breakage detector and oil-side overpressure protection.

Drive power is 2.2 kW and weight without options is 38 kg.

Pressure generators are modular: up to 3,000 bar for gases and 7,000 to 14,000 bar for liquids. The spindle hand pump needs no compressed air or power supply.

Diesel engine components

The engine components line makes high-pressure fuel lines, common rail accumulators up to 3,400 bar, fuel line shielding and air starting components up to 40 bar for ships, locomotives and generators.

Shielding keeps leaking fuel away from hot engine parts. Most fuel lines undergo autofrettage.

The manufacturer

NOVA Swiss is the registered brand of the Swiss company NOVA WERKE AG, founded in 1921 in Zurich and based in Effretikon. Subsidiaries operate in France, Germany, Italy and Hong Kong.

Components and systems are designed mainly for pressures above 500 bar. Sizes and lead time are stated in the quotation for each project.

NOVA Swiss and model names are trademarks of their respective owners and are used only to identify the equipment for which we source parts. SpareX is not an official dealer, distributor or representative of NOVA Swiss and is not affiliated with the trademark owner. Origin, documents and warranty are stated for each item in the quotation.