Mazzei - ISO 2081 Series - 50mm Male BSPT Inlet/Outlet Connections (32mm Male BPST Suction Port)
ISO 2081 Series 50mm BSPT Venturi Injector
Differential pressure chemical injector with patented internal mixing vanes for precision chemical dosing and gas dissolution in water treatment systems
Venturi Physics with Internal Mixing Technology
Venturi Suction Effect
Pressurized water accelerates through a constricted injection chamber, creating a vacuum at the suction port that draws chemicals or gases without pumps or electricity
Patented Mixing Vanes
Internal vanes generate thousands of microbubbles with exponentially greater surface area than single large bubbles, maximizing gas solubility and chemical dispersion
Zero Maintenance Design
No moving parts, seals, or check valves to fail. The ISO 2081 operates reliably for years with no wear components or scheduled service
Wide Operating Range
Functions across variable pressures with minimal differential required. Maintains consistent suction capacity and mixing performance even under fluctuating conditions
ISO 2081 Series Connection Details
| Model Series | ISO 2081 |
| Inlet Connection | 50mm Male BSPT |
| Outlet Connection | 50mm Male BSPT |
| Suction Port | 32mm Male BSPT |
| Thread Standard | British Standard Pipe Thread (BSPT) |
| Material Options | Polypropylene (GRPP), PVDF, ECTFE |
Choose Based on Chemical Compatibility
Polypropylene (GRPP) – Green
Cost-effective baseline material with high tensile strength. Resists most acids and alkalis. Lightweight and rigid construction. Best for general chemical injection in non-UV environments
PVDF – Blue or Natural
Advanced thermoplastic with superior temperature and pressure handling. Resists ozone, sulfuric acid, nitric acid, and chlorine. UV-stable. NSF 61 and FDA approved in natural color for potable water
ECTFE
Extreme chemical resistance in high-pH alkaline environments above pH 10. Low flammability per DIN 4102. UV-A and UV-B resistant. Physiologically safe for demanding industrial applications
Understanding BSPT Dimensions
British Standard Pipe Thread (BSPT) does not measure as indicated on a ruler. A 1/4" BSPT actually measures approximately 0.518" in diameter. The 50mm BSPT on the ISO 2081 inlet and outlet is the nominal pipe size, not the actual thread diameter. The 32mm BSPT suction port follows the same standard. Always verify thread compatibility with actual fittings, not tape measurements.
| 1/8" BSPT | 0.383" actual diameter |
| 1/4" BSPT | 0.518" actual diameter |
| 3/8" BSPT | 0.656" actual diameter |
| 1/2" BSPT | 0.825" actual diameter |
| 3/4" BSPT | 1.041" actual diameter |
| 1" BSPT | 1.309" actual diameter |
Where the ISO 2081 Works
The Mazzei ISO 2081 series with 50mm BSPT connections handles high-flow applications in commercial water treatment, industrial process water, agricultural fertigation systems, and municipal chemical dosing. Common uses include chlorine injection for disinfection, ozone dissolution for oxidation, oxygen injection for aquaculture, hydrogen peroxide dosing for oxidation, and fertilizer injection in irrigation systems. The 32mm suction port accommodates concentrated chemical feeds or gas lines with adequate draw capacity for most medium-to-large installations.
No Pump Required
Uses line pressure to create vacuum and inject chemicals without external pumps or power
Lower Operating Cost
No electricity, no moving parts to replace, no maintenance schedules beyond periodic inspection
ISO 2081 Series 50mm BSPT Venturi Injector
Differential pressure chemical injector with patented internal mixing vanes for precision chemical dosing and gas dissolution in water treatment systems
Venturi Physics with Internal Mixing Technology
Venturi Suction Effect
Pressurized water accelerates through a constricted injection chamber, creating a vacuum at the suction port that draws chemicals or gases without pumps or electricity
Patented Mixing Vanes
Internal vanes generate thousands of microbubbles with exponentially greater surface area than single large bubbles, maximizing gas solubility and chemical dispersion
Zero Maintenance Design
No moving parts, seals, or check valves to fail. The ISO 2081 operates reliably for years with no wear components or scheduled service
Wide Operating Range
Functions across variable pressures with minimal differential required. Maintains consistent suction capacity and mixing performance even under fluctuating conditions
ISO 2081 Series Connection Details
| Model Series | ISO 2081 |
| Inlet Connection | 50mm Male BSPT |
| Outlet Connection | 50mm Male BSPT |
| Suction Port | 32mm Male BSPT |
| Thread Standard | British Standard Pipe Thread (BSPT) |
| Material Options | Polypropylene (GRPP), PVDF, ECTFE |
Choose Based on Chemical Compatibility
Polypropylene (GRPP) – Green
Cost-effective baseline material with high tensile strength. Resists most acids and alkalis. Lightweight and rigid construction. Best for general chemical injection in non-UV environments
PVDF – Blue or Natural
Advanced thermoplastic with superior temperature and pressure handling. Resists ozone, sulfuric acid, nitric acid, and chlorine. UV-stable. NSF 61 and FDA approved in natural color for potable water
ECTFE
Extreme chemical resistance in high-pH alkaline environments above pH 10. Low flammability per DIN 4102. UV-A and UV-B resistant. Physiologically safe for demanding industrial applications
Understanding BSPT Dimensions
British Standard Pipe Thread (BSPT) does not measure as indicated on a ruler. A 1/4" BSPT actually measures approximately 0.518" in diameter. The 50mm BSPT on the ISO 2081 inlet and outlet is the nominal pipe size, not the actual thread diameter. The 32mm BSPT suction port follows the same standard. Always verify thread compatibility with actual fittings, not tape measurements.
| 1/8" BSPT | 0.383" actual diameter |
| 1/4" BSPT | 0.518" actual diameter |
| 3/8" BSPT | 0.656" actual diameter |
| 1/2" BSPT | 0.825" actual diameter |
| 3/4" BSPT | 1.041" actual diameter |
| 1" BSPT | 1.309" actual diameter |
Where the ISO 2081 Works
The Mazzei ISO 2081 series with 50mm BSPT connections handles high-flow applications in commercial water treatment, industrial process water, agricultural fertigation systems, and municipal chemical dosing. Common uses include chlorine injection for disinfection, ozone dissolution for oxidation, oxygen injection for aquaculture, hydrogen peroxide dosing for oxidation, and fertilizer injection in irrigation systems. The 32mm suction port accommodates concentrated chemical feeds or gas lines with adequate draw capacity for most medium-to-large installations.
No Pump Required
Uses line pressure to create vacuum and inject chemicals without external pumps or power
Lower Operating Cost
No electricity, no moving parts to replace, no maintenance schedules beyond periodic inspection
Original: $199.35
-65%$199.35
$69.77Description
ISO 2081 Series 50mm BSPT Venturi Injector
Differential pressure chemical injector with patented internal mixing vanes for precision chemical dosing and gas dissolution in water treatment systems
Venturi Physics with Internal Mixing Technology
Venturi Suction Effect
Pressurized water accelerates through a constricted injection chamber, creating a vacuum at the suction port that draws chemicals or gases without pumps or electricity
Patented Mixing Vanes
Internal vanes generate thousands of microbubbles with exponentially greater surface area than single large bubbles, maximizing gas solubility and chemical dispersion
Zero Maintenance Design
No moving parts, seals, or check valves to fail. The ISO 2081 operates reliably for years with no wear components or scheduled service
Wide Operating Range
Functions across variable pressures with minimal differential required. Maintains consistent suction capacity and mixing performance even under fluctuating conditions
ISO 2081 Series Connection Details
| Model Series | ISO 2081 |
| Inlet Connection | 50mm Male BSPT |
| Outlet Connection | 50mm Male BSPT |
| Suction Port | 32mm Male BSPT |
| Thread Standard | British Standard Pipe Thread (BSPT) |
| Material Options | Polypropylene (GRPP), PVDF, ECTFE |
Choose Based on Chemical Compatibility
Polypropylene (GRPP) – Green
Cost-effective baseline material with high tensile strength. Resists most acids and alkalis. Lightweight and rigid construction. Best for general chemical injection in non-UV environments
PVDF – Blue or Natural
Advanced thermoplastic with superior temperature and pressure handling. Resists ozone, sulfuric acid, nitric acid, and chlorine. UV-stable. NSF 61 and FDA approved in natural color for potable water
ECTFE
Extreme chemical resistance in high-pH alkaline environments above pH 10. Low flammability per DIN 4102. UV-A and UV-B resistant. Physiologically safe for demanding industrial applications
Understanding BSPT Dimensions
British Standard Pipe Thread (BSPT) does not measure as indicated on a ruler. A 1/4" BSPT actually measures approximately 0.518" in diameter. The 50mm BSPT on the ISO 2081 inlet and outlet is the nominal pipe size, not the actual thread diameter. The 32mm BSPT suction port follows the same standard. Always verify thread compatibility with actual fittings, not tape measurements.
| 1/8" BSPT | 0.383" actual diameter |
| 1/4" BSPT | 0.518" actual diameter |
| 3/8" BSPT | 0.656" actual diameter |
| 1/2" BSPT | 0.825" actual diameter |
| 3/4" BSPT | 1.041" actual diameter |
| 1" BSPT | 1.309" actual diameter |
Where the ISO 2081 Works
The Mazzei ISO 2081 series with 50mm BSPT connections handles high-flow applications in commercial water treatment, industrial process water, agricultural fertigation systems, and municipal chemical dosing. Common uses include chlorine injection for disinfection, ozone dissolution for oxidation, oxygen injection for aquaculture, hydrogen peroxide dosing for oxidation, and fertilizer injection in irrigation systems. The 32mm suction port accommodates concentrated chemical feeds or gas lines with adequate draw capacity for most medium-to-large installations.
No Pump Required
Uses line pressure to create vacuum and inject chemicals without external pumps or power
Lower Operating Cost
No electricity, no moving parts to replace, no maintenance schedules beyond periodic inspection
