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 UNI/ANSI Flanged - G10-CF / G10-CC | Nuova | Philippopoulos s.a.

Safety Valves UNI/ANSI Flanged - G10-CF / G10-CC | Nuova

Safety Valves UNI/ANSI Flanged - G10-CF / G10-CC | Nuova
Nuova General Instruments
Nuova G10-CF / G10-CC Safety Valves UNI / ANSI The Nuova G10-CF and G10-CC are flanged spring-loaded safety valves designed for overpressure protection of vessels, pipelines, and small collectors. The discharge orifice is 10 mm (area 78.50 mm²), suitable for low flow rates of steam, air, inert gases, or process liquids. Technical Specifications PN: 40...
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Safety Valves UNI/ANSI Flanged - G14-CF / G14-CC | Nuova | Philippopoulos s.a.

Safety Valves UNI/ANSI Flanged - G14-CF / G14-CC | Nuova

Safety Valves UNI/ANSI Flanged - G14-CF / G14-CC | Nuova
Nuova General Instruments
Nuova G14-CF / G14-CC Safety Relief Valves UNI / ANSI The Nuova G14-CF and G14-CC are flanged spring-loaded safety relief valves designed for overpressure protection of vessels, piping, and industrial skids. The discharge orifice is 13.5 mm (area 143.07 mm²), providing higher flow capacity compared to the G10 series. Technical Specifications PN: 60 Set...
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Safety Valves UNI/ANSI Flanged - G15-CF / G15-CC | Nuova | Philippopoulos s.a.

Safety Valves UNI/ANSI Flanged - G15-CF / G15-CC | Nuova

Safety Valves UNI/ANSI Flanged - G15-CF / G15-CC | Nuova
Nuova General Instruments
Nuova G15-CF / G15-CC Safety Valves UNI / ANSI The Nuova G15-CF and G15-CC are flanged spring-loaded safety valves designed for overpressure protection of vessels, pipelines, and small process units. The discharge orifice is 15 mm (area: 176.71 mm²), providing higher flow capacity than G10 and G14 series valves. Technical Specifications Body PN: 25 Set...
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Safety Valves UNI/ANSI Flanged - G20-CF / G20-CC | Nuova | Philippopoulos s.a.

Safety Valves UNI/ANSI Flanged - G20-CF / G20-CC | Nuova

Safety Valves UNI/ANSI Flanged - G20-CF / G20-CC | Nuova
Nuova General Instruments
Nuova G20-CF / G20-CC Safety Valves UNI / ANSI The Nuova G20-CF / G20-CC are flanged spring-loaded safety valves designed for steam, air, inert gases, and process liquids. The discharge orifice is 20 mm (area 314 mm²), providing higher flow capacity compared to G10, G14, and G15 models. Technical Data PN: 60 Set Pressure: 0.3–60 bar (CE / UKCA / EAC /...
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Safety Valves UNI/ANSI Flanged - G25-CF / G25-CC | Nuova | Philippopoulos s.a.

Safety Valves UNI/ANSI Flanged - G25-CF / G25-CC | Nuova

Safety Valves UNI/ANSI Flanged - G25-CF / G25-CC | Nuova
Nuova General Instruments
Nuova G25-CF / G25-CC Safety Valves UNI / ANSI The Nuova G25-CF / G25-CC are flanged spring-loaded safety valves designed for overpressure protection of vessels, manifolds, and process lines. The discharge orifice is 25 mm (area 490.63 mm²), supporting higher flow rates compared to G20 series valves. Technical Data PN: 60 Set Pressure: 0.3–60 bar (CE /...
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Safety Valves UNI/ANSI Flanged - G32-CF / G32-CC | Nuova | Philippopoulos s.a.

Safety Valves UNI/ANSI Flanged - G32-CF / G32-CC | Nuova

Safety Valves UNI/ANSI Flanged - G32-CF / G32-CC | Nuova
Nuova General Instruments
Nuova G32-CF / G32-CC Safety Valves UNI / ANSI The Nuova G32-CF / G32-CC are flanged spring-loaded safety valves designed for overpressure protection of vessels, manifolds, and piping systems. The discharge orifice is 32 mm (area 803.84 mm²), supporting higher flow rates than G20 and G25 series. Technical Data PN: 40 Set Pressure: 0.3–14 bar for CE /...
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Safety Valves API526 Flanged - G10-API | Nuova | Philippopoulos s.a.

Safety Valves API526 Flanged - G10-API | Nuova

Safety Valves API526 Flanged - G10-API | Nuova
Nuova General Instruments
Nuova G10-API Safety Valve API 526 The Nuova G10-API is a flanged, spring-loaded safety valve designed in accordance with API 526 for low-capacity relief applications. The orifice is 10 mm (area 78.50 mm²), corresponding to API code 1D2 / orifice D. Typical applications include pressure vessels, small receivers, steam, air, inert gases, and process...
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Safety Valves API526 Flanged - G14-API | Nuova | Philippopoulos s.a.

Safety Valves API526 Flanged - G14-API | Nuova

Safety Valves API526 Flanged - G14-API | Nuova
Nuova General Instruments
Nuova G14-API Safety Valve API 526 The Nuova G14-API is a flanged, spring-loaded safety valve designed according to API 526 requirements. It is intended for overpressure protection of pressure vessels, headers, steam lines, air, inert gases, and process liquids. The technical datasheet designates it as G14-API, with a 13.5 mm orifice, 143.07 mm² discharge...
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Safety Valves API526 Flanged - G20-API | Nuova | Philippopoulos s.a.

Safety Valves API526 Flanged - G20-API | Nuova

Safety Valves API526 Flanged - G20-API | Nuova
Nuova General Instruments
Nuova G20-API Safety Valve API 526 The Nuova G20-API is a flanged, spring-loaded safety valve designed according to API 526 for overpressure protection in steam, air, inert gases, and process liquids. The discharge orifice is 20 mm (area 314 mm²), corresponding to API code 1½G3 / orifice G. Technical Data PN: 60 Set Pressure (CE / UKCA / EAC / ATEX):...
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Safety Valves API526 Flanged - G25-API | Nuova | Philippopoulos s.a.

Safety Valves API526 Flanged - G25-API | Nuova

Safety Valves API526 Flanged - G25-API | Nuova
Nuova General Instruments
Nuova G25-API Safety Valve API 526 The Nuova G25-API is a flanged, spring-loaded safety valve designed in accordance with API 526 requirements. It is intended for overpressure protection of pressure vessels, steam headers, air receivers, neutral gas lines, and process liquid systems. The valve features a 25 mm orifice (490.63 mm² discharge area),...
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Safety Valves API526 Flanged - G32-API | Nuova | Philippopoulos s.a.

Safety Valves API526 Flanged - G32-API | Nuova

Safety Valves API526 Flanged - G32-API | Nuova
Nuova General Instruments
Nuova G32-API Safety Valve API 526 The Nuova G32-API is a flanged, spring-loaded safety valve designed to API 526 rating, suitable for overpressure protection of pressure vessels, headers, and process lines. The discharge orifice is 32 mm (area 803.84 mm²), corresponding to orifice J and API code 2J3. Technical Data PN: 40 Set pressure CE / UKCA / EAC /...
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Safety Valves API526 Flanged - G40-API | Nuova | Philippopoulos s.a.

Safety Valves API526 Flanged - G40-API | Nuova

Safety Valves API526 Flanged - G40-API | Nuova
Nuova General Instruments
Nuova G40-API Safety Valve API 526 The Nuova G40-API is a flanged, spring-loaded safety valve designed according to API 526 for overpressure protection of pressure vessels, headers, and process lines. The discharge orifice is 40 mm (area 1256 mm²), corresponding to API code 3K4 / orifice K. Technical Data PN: 40 Set pressure (CE / UKCA / EAC / ATEX):...
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Safety Valves Free Discharge - B12 | Nuova | Philippopoulos s.a.

Safety Valves Free Discharge - B12 | Nuova

Safety Valves Free Discharge - B12 | Nuova
Nuova General Instruments
Nuova B12 Direct Discharge Safety Valve The Nuova B12 is a spring-loaded safety valve designed for applications where direct discharge to atmosphere is required and no outlet piping is permitted. The discharge orifice is 12 mm (area: 113.04 mm²). Suitable for gases, steam, and clean liquids without suspended solids. Technical Data Pressure Class (PN):...
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Safety Valves Free Discharge - B20 | Nuova | Philippopoulos s.a.

Safety Valves Free Discharge - B20 | Nuova

Safety Valves Free Discharge - B20 | Nuova
Nuova General Instruments
Nuova B20 Safety Relief Valve – Atmospheric Discharge The Nuova B20 is a spring-loaded safety relief valve designed for installations where discharge is vented directly to atmosphere, without downstream piping. The discharge orifice is 20 mm (area 314 mm²), suitable for gases, steam, and clean liquids without suspended solids. Technical Data PN: 60 Set...
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Safety Valves Free Discharge - B38 | Nuova | Philippopoulos s.a.

Safety Valves Free Discharge - B38 | Nuova

Safety Valves Free Discharge - B38 | Nuova
Nuova General Instruments
Nuova B38 Atmospheric Discharge Safety Valve The Nuova B38 is a spring-loaded safety valve designed for installations where direct atmospheric discharge is required, with no outlet piping. The discharge orifice is 38 mm (area 1133.54 mm²), suitable for gases, steam, and clean liquids without suspended solids. Technical Data PN: 40 Set Pressure (CE / UKCA...
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Safety Valves Free Discharge - C10 | Nuova | Philippopoulos s.a.

Safety Valves Free Discharge - C10 | Nuova

Safety Valves Free Discharge - C10 | Nuova
Nuova General Instruments
Nuova C10 Direct Discharge Safety Valve The Nuova C10 is a spring-loaded safety valve designed for direct discharge (open outlet, no discharge piping). The discharge orifice is 10 mm (area: 78.50 mm²). Typical applications include small pressure vessels, air lines, test gases, steam, and technical fluids, provided local discharge is permissible. Technical...
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Safety Valves Free Discharge - D10 | Nuova | Philippopoulos s.a.

Safety Valves Free Discharge - D10 | Nuova

Safety Valves Free Discharge - D10 | Nuova
Nuova General Instruments
Nuova D10 Direct-Relief Safety Valve The Nuova D10 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 10 mm with a discharge area of 78.50 mm². Suitable for gases, steam, and liquids free from solids or particulates. Technical Data PN:...
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Safety Valves Free Discharge - D14 | Nuova | Philippopoulos s.a.

Safety Valves Free Discharge - D14 | Nuova

Safety Valves Free Discharge - D14 | Nuova
Nuova General Instruments
Nuova D14 Free Discharge Safety Valve The Nuova D14 is a spring-loaded safety valve designed for direct atmospheric discharge, without an outlet connection for piping. The discharge orifice is 14 mm (area 153.86 mm²), suitable for protecting small vessels, air lines, steam systems, and technical fluids from overpressure. Technical Data Pressure Class...
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Safety Valves Free Discharge - D7 | Nuova | Philippopoulos s.a.

Safety Valves Free Discharge - D7 | Nuova

Safety Valves Free Discharge - D7 | Nuova
Nuova General Instruments
Nuova D7 Spring-Loaded Safety Valve for Atmospheric Discharge The Nuova D7 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 suspended solids. Technical Data PN: 60 Set...
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Safety Valves Free Discharge - F18 | Nuova | Philippopoulos s.a.

Safety Valves Free Discharge - F18 | Nuova

Safety Valves Free Discharge - F18 | Nuova
Nuova General Instruments
Nuova F18 Safety Valve for Atmospheric Discharge The Nuova F18 is a spring-loaded safety valve designed for direct atmospheric discharge. It does not include an outlet connection for piping. The discharge orifice is 18 mm in diameter, with an effective area of 254.34 mm². Suitable for gases, steam, and clean liquids without suspended solids or...
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Safety Valves Free Discharge - F25 | Nuova | Philippopoulos s.a.

Safety Valves Free Discharge - F25 | Nuova

Safety Valves Free Discharge - F25 | Nuova
Nuova General Instruments
Nuova F25 Direct Discharge Safety Valve The Nuova F25 is a spring-loaded safety valve designed for direct atmospheric discharge. It does not feature an outlet connection for piping; the discharge port is open to atmosphere. The orifice diameter is 25 mm (area: 490.63 mm²), suitable for gases, steam, and clean liquids without suspended solids. Technical...
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Safety Valves Free Discharge - F32 | Nuova | Philippopoulos s.a.

Safety Valves Free Discharge - F32 | Nuova

Safety Valves Free Discharge - F32 | Nuova
Nuova General Instruments
Nuova F32 Atmospheric Safety Relief Valve The Nuova F32 is a spring-loaded safety relief valve designed for direct atmospheric discharge. The valve does not feature an outlet connection for piping; discharge occurs through a 32 mm orifice (803.84 mm² area). Suitable for gases, steam, and clean liquids without suspended solids. Technical Data Pressure...
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Safety Valves Free Discharge - F40 | Nuova | Philippopoulos s.a.

Safety Valves Free Discharge - F40 | Nuova

Safety Valves Free Discharge - F40 | Nuova
Nuova General Instruments
Nuova F40 Atmospheric Discharge Safety Valve The Nuova F40 is a spring-loaded safety valve designed for direct atmospheric discharge. It does not feature an outlet connection for discharge piping. The orifice diameter is 40 mm with a discharge area of 1256 mm². Suitable for gases, steam, and clean liquids without suspended solids. Technical Data...
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Safety Valves Free Discharge - FKS25 | Nuova | Philippopoulos s.a.

Safety Valves Free Discharge - FKS25 | Nuova

Safety Valves Free Discharge - FKS25 | Nuova
Nuova General Instruments
Nuova FKS25 Atmospheric Discharge Safety Valve The Nuova FKS25 is a spring-loaded safety valve designed for direct atmospheric discharge. The discharge orifice is 25 mm (area: 490.63 mm²). This valve is intended for low-pressure equipment protection where venting is not routed to a header or collection system. Technical Data PN: 10 Set Pressure Range:...
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