Precision Valves for Every Application

Vent-Tech valves are engineered to tackle the unique demands of wastewater and clean water systems. Durable and high-performing, they deliver trusted solutions for sewer and water applications.
Vent-Tech

Sewer Valves

Optimized solutions for wastewater flow

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Vent-Tech

Water Valves

Engineered for efficient water flow in critical systems

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Explore Our Industry-Leading Vent-Tech Products

At International Valve, our products are engineered for top performance, reliability, and durability. From municipal water systems to industrial applications, our superior valve solutions deliver precision engineering and innovative design, setting the standard for water and wastewater infrastructure.

Sewer Valves
Water Valves
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Sewer Valves

Engineered to optimize wastewater flow and prevent blockages, our sewer valves provide unmatched reliability for tough environments. Built to withstand demanding conditions, they ensure long-term performance and efficient system operation.

SWG
SWG Vent-Tech
The Vent-Tech Model SWG valves are all-purpose sewage valves. When the existing headroom is ample and operating pressures are high, we recommend Model SWG.

Model SWG offers the industry-leading, proven sealing performance at 3 psi and above, full port vacuum relief, surge protection, large air out at start-up and pressurized air release. Model SWG combines years of manufacturing experience with advanced Patented flow designs. The Model SWG was engineered to expand and improve the technological advances of the flat float air/vacuum valve.

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SZG
SZG Vent-Tech
The Vent-Tech Model SZG valves are high-performance, world class sewage valves. If the HGL is expected to be consistently maintained above 3-5 psi then use a Model SWG valve, otherwise we recommend specifying the SZG.

Model SZG (‘Z-Valves’), seal at zero hydraulic head (i.e. no reliance on a minimum pipeline pressure to achieve seal). full port vacuum relief, surge protection, large air out at start-up and pressurized air release. A true Z-valve will seal at 0psi and from the effects of buoyancy alone.  Model SZG valves do so with the liquid level low enough in the valve so that when the valve reaches full rated pressure the fluid remains low enough within the valve to avoid fouling the seals.

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SXG
SXG Vent-Tech
The Vent-Tech Model SXG is our best 3"-8", compact low-pressure sealing CARV. For greater than 1 psi applications and where height is limited, we recommend specifying Model SXG. Refer to Model SDG for 2-inch size.

Model SXG is essentially a shorter version of the Flanged SWG air/vacuum relief valve with improved flow performance and sealing characteristics. In In applications where clearance height is ample, valve weight is not a factor and you require 0 psi sealing pressure, specify the “Z-Valve TM and for 3 psi applications, use Model SWG. For greater than 1 psi applications and where height is limited, we recommend specifying Model SXG. Refer to Model SDG for 2-inch size.

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SSG
SSG Vent-Tech
The Vent-Tech Model SSG offers the best vacuum flow performance of all our 2-inch valves. In applications where clearance height is ample or valve weight is not a factor, specify the Model SWG valve, otherwise we recommend specifying the Model SSG or Model SDG.

Model SSG sewer valve is essentially a shorter version of the Model SWG air/vacuum relief valve, but with improved flow performance, less weight and better self-cleaning. Model SSG is available as a 1 or 2-inch valve and offers proven sealing performance at less than 3psi minimum, full or reduced port vacuum relief, surge protection, large air out at start-up and pressurized air release. It can be configured to mate with 2 through 4-inch pipeline connection and provides superior vacuum flow performance.

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SDG
SDG Vent-Tech
The Vent-Tech Model SDG is our best compact, low pressure sealing CARV. For less than 1 psi applications and where height is limited, we recommend specifying the Model SDG.

The Model SDG is essentially a shorter version of the Model SZG air/vacuum relief valve with improved flow performance, less weight and better self-cleaning. In applications where clearance height is ample, valve weight is not a factor and you require 0 psi sealing pressure, specify the “Z-Valve”. For 3-5 psi applications, use Model SWG. For less than 1 psi applications and where height is limited, we recommend specifying the Model SDG.

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SKW
SKW Vent-Tech
The Vent-Tech Model SKW is our best super-compact, low pressure sealing CARV. In applications where clearance height is ample, valve weight is not a factor and you require 0 psi sealing pressure, specify the “Z-Valve TM ”. For 3-5 psi applications, use Model SWG. For less than 1 psi applications and where height is limited, we recommend specifying the Model SDG. In severely height restricted applications, use Model SKW.

Model SKW was designed at the request of a customer who needed an extremely short valve. Even we were reluctant. We were convinced that we were spitting in the sewer god’s eyes. 2025 will mark 5-years since these valves went into service. They have performed brilliantly, and references are available. Model SKW is always Biased and a unique design with a single internal float.

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Water Valves

Designed for efficiency and durability, our water valves ensure seamless operation in critical clean water systems. With advanced features for precision and reliability, they deliver consistent performance for various applications.

WTR
WTR Vent-Tech
The Vent-Tech Model WTR clean water valve combines thirteen years of manufacturing experience with advanced Patent Pend-ing flow designs. The Model WTR was engineered to expand and improve the technological advances of the flat float air/vacuum valve. For valve sizes 3-inch and larger, we recommend using the Model WTW.

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WZR
WZR Vent-Tech
TBD

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WTW
WTW Vent-Tech
The Vent-Tech Model WTW clean water valves are air release and vacuum break valves designed to provide surge protection and seal at three (3) psi hydraulic head. The Model WTW was engineered to expand and improve the technological advances of the Model WTR flat float air/vacuum valve. If the HGL is expected to be consistently maintained above ~5 psi then use a Model WTW valve, otherwise we recommend specifying the WZW. Now available thru 16-inch.

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WZW
WZW Vent-Tech
The Vent-Tech Model WZW clean water valves are air release and vacuum break valves designed to provide surge protection and seal at zero hydraulic head (i.e. no reliance on a minimum pipeline pressure to achieve seal). If the HGL is expected to be consistently maintained above ~5 psi then use a Model WTW valve, otherwise we recommend specifying the WZW. Now available thru 16-inch.

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RAW
RAW Vent-Tech
The Vent-Tech Model RAW raw water valves were designed specifically for use in raw water installations. We define raw water as water that has not been treated for human consumption and is sourced directly from the environment. This includes rainwater, groundwater, surface water, effluent, well water, lakes, and/or rivers. The Vent-Tech Model RAW valve is designed to handle normal environmental debris, such as leaves, twigs, silt, and similar organic materials commonly found in raw water. However, it is important to note that this valve is not intended for use with raw sewage. Raw sewage refers to untreated wastewater containing human waste, industrial debris, grease, and/or other contaminants.

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