List of products by brand Nuova General Instruments

Nuova General Instruments – Technical profile of a safety valve and overflow valve manufacturer

Nuova General Instruments is an Italian manufacturer of spring-loaded safety valves and overflow valves for pressure equipment, piping systems, compressors, steam generators, refrigeration circuits, process skids and industrial utilities.

The company manufactures safety valves in brass, stainless steel, mixed construction and PVC, with threaded, flanged, sanitary and API-type configurations. The range represented through Philippopoulos S.A. includes UNI / ANSI flanged safety valves, API 526 flanged safety valves, free discharge safety valves and piped discharge safety valves.

Main product groups include:

  • free discharge safety valves,
  • piped discharge safety valves,
  • high-pressure safety valves,
  • flanged UNI / ANSI safety valves,
  • API 526 safety valves,
  • PVC safety valves,
  • overflow valves.

A safety valve is a pressure safety device. It must be selected according to the relief scenario, not only pipe size. Required data include set pressure, protected equipment design pressure, required relieving capacity, medium, temperature, back pressure, discharge line arrangement and certification requirements.

Free discharge valves vent directly to atmosphere and are suitable only where the discharged medium and location make this acceptable. Piped discharge valves are used when the relieved fluid must be routed to a safe point, vent header, scrubber, flare or collection system.

High-pressure safety valves require careful verification of spring range, connection rating, seat tightness, body material and calibration certificate. PVC safety valves are used where chemical compatibility requires non-metallic construction, within pressure and temperature limits.

Overflow valves are used for pressure control or bypass applications. They should not automatically be treated as certified safety valves unless the applicable documentation and regulatory framework confirm that use.

Nuova General products are relevant for pressure equipment engineers, process engineers and maintenance teams working with overpressure protection.

Safety Valves Free Discharge - Z10 | Nuova | Philippopoulos s.a.

Safety Valves Free Discharge - Z10 | Nuova

Safety Valves Free Discharge - Z10 | Nuova
Nuova General Instruments
Nuova Z10 Safety Relief Valve – Atmospheric Discharge The Nuova Z10 is a spring-loaded safety relief valve designed for direct atmospheric discharge, with no outlet connection to piping. Discharge orifice diameter is 10 mm (area 78.50 mm²), suitable for low flow rates of gases, steam, and clean liquids without suspended solids. Technical Data PN: 16 Set...
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Safety Valves Free Discharge - Z14 | Nuova | Philippopoulos s.a.

Safety Valves Free Discharge - Z14 | Nuova

Safety Valves Free Discharge - Z14 | Nuova
Nuova General Instruments
Nuova Z14 Direct Discharge Safety Valve The Nuova Z14 is a spring-loaded safety valve designed for direct atmospheric discharge, with no outlet connection to a discharge pipe. The discharge orifice is 14 mm (area 153.86 mm²), suitable for small-scale applications involving gases, steam, and clean liquids without solid particulates. Technical Data...
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Safety Valves Free Discharge - Z20 | Nuova | Philippopoulos s.a.

Safety Valves Free Discharge - Z20 | Nuova

Safety Valves Free Discharge - Z20 | Nuova
Nuova General Instruments
Nuova Z20 Direct-Relief Safety Valve The Nuova Z20 is a spring-loaded safety valve designed for direct atmospheric discharge, with no outlet connection to piping. The discharge orifice is 20 mm (area 314 mm²), suitable for small-scale gas, steam, and liquid applications where solids are not present. Technical Data Pressure Class (PN): 16 Set Pressure...
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Safety Valves Free Discharge - Z25 | Nuova | Philippopoulos s.a.

Safety Valves Free Discharge - Z25 | Nuova

Safety Valves Free Discharge - Z25 | Nuova
Nuova General Instruments
Nuova Z25 Safety Valve for Atmospheric Discharge The Nuova Z25 is a spring-loaded safety valve designed for direct atmospheric discharge, with no outlet connection to piping. The discharge orifice is 25 mm (area 490.63 mm²), suitable for gases, steam, and clean liquids without particulates or suspended solids. Technical Data PN: 16 Set Pressure Range:...
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Safety Valves Free Discharge - Z32 | Nuova | Philippopoulos s.a.

Safety Valves Free Discharge - Z32 | Nuova

Safety Valves Free Discharge - Z32 | Nuova
Nuova General Instruments
Nuova Z32 Direct Discharge Safety Valve The Nuova Z32 is a spring-loaded safety valve designed for direct atmospheric discharge. This model does not provide an outlet connection for discharge piping. The orifice diameter is 32 mm with a discharge area of 803.84 mm². Suitable for gases, steam, and clean liquids without suspended solids or particulates....
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Safety Valves Free Discharge - Z7 | Nuova | Philippopoulos s.a.

Safety Valves Free Discharge - Z7 | Nuova

Safety Valves Free Discharge - Z7 | Nuova
Nuova General Instruments
Nuova Z7 Spring-Loaded Safety Valve with Free Discharge The Nuova Z7 is a spring-loaded safety valve designed for direct atmospheric discharge, without an outlet connection to piping. The discharge orifice is 7 mm (area 38.47 mm²), suitable for low flow rates of gases, steam, and clean liquids without particulates or solids. Technical Data Pressure Class...
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Safety Valves High Pressure - E10 | Nuova | Philippopoulos s.a.

Safety Valves High Pressure - E10 | Nuova

Safety Valves High Pressure - E10 | Nuova
Nuova General Instruments
Nuova E10 High Pressure Safety Relief Valve The Nuova E10 is a spring-loaded safety relief valve designed for gases, steam, and liquids in pressurized systems. The discharge orifice is 10 mm (area 78.50 mm²), suitable for low to medium flow rates in skids, pressure vessels, compressors, test lines, and auxiliary circuits. Technical Data Pressure Class...
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Safety Valves High Pressure - E10/L | Nuova | Philippopoulos s.a.

Safety Valves High Pressure - E10/L | Nuova

Safety Valves High Pressure - E10/L | Nuova
Nuova General Instruments
Nuova E10/L High Pressure Safety Relief Valve The Nuova E10/L is a spring-loaded safety relief valve designed for gases, steam, and liquids in high-pressure circuits. The discharge orifice is 10 mm (area 78.50 mm²), suitable for small to medium relief capacities in vessels, skids, compressors, and test lines. Technical Data Pressure Class (PN): 100 for...
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Safety Valves High Pressure - E10/L150 | Nuova | Philippopoulos s.a.

Safety Valves High Pressure - E10/L150 | Nuova

Safety Valves High Pressure - E10/L150 | Nuova
Nuova General Instruments
Nuova E10/L150 High Pressure Safety Valve The Nuova E10/L150 is a spring-loaded safety valve designed for overpressure protection of pressure equipment handling gases, steam, and liquids. It is specified where set pressures exceed the E10/L range, up to 150 bar. The discharge orifice is 10 mm (area: 78.50 mm²). Technical Data Pressure Class (PN): 150...
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Safety Valves High Pressure - E14 | Nuova | Philippopoulos s.a.

Safety Valves High Pressure - E14 | Nuova

Safety Valves High Pressure - E14 | Nuova
Nuova General Instruments
Nuova E14 High-Pressure Safety Relief Valve The Nuova E14 is a spring-loaded safety relief valve designed for gases, steam, and liquids in pressurized systems. The discharge orifice is 14 mm (area 153.86 mm²), providing higher flow capacity compared to E10 series valves. Typical applications include pressure vessels, test benches, compressors, process...
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Safety Valves High Pressure - E14/L | Nuova | Philippopoulos s.a.

Safety Valves High Pressure - E14/L | Nuova

Safety Valves High Pressure - E14/L | Nuova
Nuova General Instruments
Nuova E14/L High-Pressure Safety Relief Valve The Nuova E14/L is a spring-loaded safety relief valve designed for gases, steam, and liquids. It features a 14 mm orifice and a discharge area of 153.86 mm². Typical applications include overpressure protection for pressure vessels, compressors, test benches, hydraulic circuits, and industrial skids....
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Safety Valves High Pressure - E14/L150 | Nuova | Philippopoulos s.a.

Safety Valves High Pressure - E14/L150 | Nuova

Safety Valves High Pressure - E14/L150 | Nuova
Nuova General Instruments
Nuova E14/L150 High Pressure Safety Relief Valve The Nuova E14/L150 is a spring-loaded safety relief valve designed for gases, steam, and liquids in high-pressure industrial applications. It covers a set pressure range of 100–150 bar, with a discharge orifice of 14 mm (area 153.86 mm²). The valve is intended for mechanical overpressure protection and is...
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Safety Valves High Pressure - E5/LS | Nuova | Philippopoulos s.a.

Safety Valves High Pressure - E5/LS | Nuova

Safety Valves High Pressure - E5/LS | Nuova
Nuova General Instruments
Nuova E5/LS High Pressure Safety Relief Valve Nuova E5/LS is a spring-loaded safety relief valve designed for high pressure applications with gases, steam, and liquids. The discharge orifice is 5 mm (area 19.63 mm²), suitable for protecting small volumes, auxiliary lines, test benches, skids, and high-pressure equipment. Technical Data PN: 700 Set...
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Safety Valves High Pressure - E5/LS600 | Nuova | Philippopoulos s.a.

Safety Valves High Pressure - E5/LS600 | Nuova

Safety Valves High Pressure - E5/LS600 | Nuova
Nuova General Instruments
Nuova E5/LS600 High Pressure Safety Relief Valve The Nuova E5/LS600 is a spring-loaded safety relief valve designed for high-pressure applications involving gases, steam, and liquids. The discharge orifice is 5 mm (area: 19.63 mm²), suitable for protecting small volumes, test benches, compressors, skids, and auxiliary high-pressure lines. Technical Data...
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Safety Valves High Pressure - E8/LS | Nuova | Philippopoulos s.a.

Safety Valves High Pressure - E8/LS | Nuova

Safety Valves High Pressure - E8/LS | Nuova
Nuova General Instruments
Nuova E8/LS High Pressure Safety Relief Valve The Nuova E8/LS is a spring-loaded safety relief valve designed for overpressure protection in small to medium volume high-pressure circuits. The discharge orifice is 8 mm (area 50.24 mm²), providing higher flow capacity than E5/LS variants, but with a lower PN rating. Suitable for gases, steam, and liquids,...
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Safety Valves High Pressure - E8/LS300 | Nuova | Philippopoulos s.a.

Safety Valves High Pressure - E8/LS300 | Nuova

Safety Valves High Pressure - E8/LS300 | Nuova
Nuova General Instruments
Nuova E8/LS300 High Pressure Safety Relief Valve The Nuova E8/LS300 is a spring-loaded safety relief valve designed for the protection of small volumes and high-pressure lines against overpressure. Suitable for gases, steam, and liquids, with material, media, and temperature compatibility to be verified by the user. The discharge orifice is 8 mm (area...
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Safety Valves Piped Discharge - B38/L | Nuova | Philippopoulos s.a.

Safety Valves Piped Discharge - B38/L | Nuova

Safety Valves Piped Discharge - B38/L | Nuova
Nuova General Instruments
Nuova B38/L Safety Valve with Piped Discharge The Nuova B38/L is a spring-loaded safety valve designed for installations where discharge must be routed to a vent line, collector, or designated safe area. The valve features a 38 mm orifice with a discharge area of 1133.54 mm². Suitable for steam, air, inert gases, and process liquids, subject to material...
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Safety Valves Piped Discharge - D10/C | Nuova | Philippopoulos s.a.

Safety Valves Piped Discharge - D10/C | Nuova

Safety Valves Piped Discharge - D10/C | Nuova
Nuova General Instruments
Nuova D10/C Safety Valve with Piped Discharge The Nuova D10/C is a spring-loaded safety valve designed for installations where discharge must be routed to a vent line or safe collection system. The orifice diameter is 10 mm (area 78.50 mm²), suitable for gases, steam, and clean liquids without suspended solids. Technical Data PN: 60 Set Pressure (CE /...
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Safety Valves Piped Discharge - D7/C | Nuova | Philippopoulos s.a.

Safety Valves Piped Discharge - D7/C | Nuova

Safety Valves Piped Discharge - D7/C | Nuova
Nuova General Instruments
Nuova D7/C Safety Valve with Piped Discharge The Nuova D7/C is a spring-loaded safety valve designed for low flow applications where discharge must be routed to a pipe. The orifice diameter is 7 mm (area 38.47 mm²), suitable for air, inert gases, steam, and liquids, subject to material and seat compatibility verification. Technical Data Pressure Class...
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Safety Valves Piped Discharge - G10 | Nuova | Philippopoulos s.a.

Safety Valves Piped Discharge - G10 | Nuova

Safety Valves Piped Discharge - G10 | Nuova
Nuova General Instruments
Nuova G10 Safety Valve with Piped Discharge The Nuova G10 is a spring-loaded safety valve designed for installations where discharge must be routed to a pipe, collector, or designated safe location. The discharge orifice is 10 mm (area 78.50 mm²), suitable for air, inert gases, steam, and clean liquids without suspended solids. Technical Data PN: 40 Set...
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Safety Valves Piped Discharge - G14 | Nuova | Philippopoulos s.a.

Safety Valves Piped Discharge - G14 | Nuova

Safety Valves Piped Discharge - G14 | Nuova
Nuova General Instruments
Nuova G14 Safety Valve with Piped Discharge The Nuova G14 is a spring-loaded safety valve designed for installations where discharge must be routed to a pipe, manifold, or designated safe disposal point. The discharge orifice is 13.5 mm (area 143.07 mm²), suitable for gases, steam, and clean liquids without solid particulates. Technical Data Pressure...
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Safety Valves Piped Discharge - G15 | Nuova | Philippopoulos s.a.

Safety Valves Piped Discharge - G15 | Nuova

Safety Valves Piped Discharge - G15 | Nuova
Nuova General Instruments
Nuova G15 Safety Valve with Piped Discharge The Nuova G15 is a spring-loaded safety valve designed for installations where discharge must be routed to a vent line or collector. The discharge orifice is 15 mm (area 176.71 mm²), suitable for gases, steam, and clean liquids without suspended solids. Technical Data Pressure Class (PN): 25 Set Pressure...
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Safety Valves Piped Discharge - G20 | Nuova | Philippopoulos s.a.

Safety Valves Piped Discharge - G20 | Nuova

Safety Valves Piped Discharge - G20 | Nuova
Nuova General Instruments
Nuova G20 Safety Valve with Piped Discharge The Nuova G20 is a spring-loaded safety valve designed for installations where discharge must be routed to a pipe, collector, or controlled disposal point. The discharge orifice is 20 mm (area 314 mm²), suitable for gases, steam, and clean liquids without solid particulates. Technical Data Pressure Class (PN):...
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Safety Valves Piped Discharge - G25 | Nuova | Philippopoulos s.a.

Safety Valves Piped Discharge - G25 | Nuova

Safety Valves Piped Discharge - G25 | Nuova
Nuova General Instruments
Nuova G25 Safety Valve with Piped Discharge The Nuova G25 is a spring-loaded safety valve designed for installations where discharge must be routed to a pipe, collector, or designated safe location, rather than vented directly to atmosphere. The discharge orifice is 25 mm (area 490.63 mm²), suitable for gases, steam, and clean liquids without suspended...
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