Envirep/TLC is the exclusive manufacturer's rep for H-Tec air valves in Pennsylvania, New Jersey, Delaware, Maryland, and West Virginia.

About H-Tec

H-TEC manufactures innovative and high-quality air valves for potable water distribution systems and wastewater force mains. Their products are functional and corrosion resistant, providing long-term cost savings for municipalities and private utilities.

Air valves in force mains serve two primary functions.

The first function is to release air or gas accumulated at the high points in the force main. This air accumulation occurs when the buoyancy or the air is greater than the energy to convey the air with the liquid.

The second function of an air valve is to add air into the piping system when the internal pressure of the pipeline drops below atmospheric pressure. Admitting air into the pipe reduces the vacuum, prevents a potential collapse of the force main, and the formation of vapor cavities.

H-Tec air valves improve the efficiency of pumping systems by preventing air accumulation in the force main. Pumping system efficiency is improved by removing air from the piping system that increases the line pressure, reduces flow, and increases pumping costs.

The H-Tec air valve used for these applications is an H-Tec air and vacuum valve. H-Tec manufactures a comprehensive line of air valves. Each has unique characteristics which make them ideal for specific applications.

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PRODUCTS

Traditional air release valves operate with two functions: open or closed. The H-TEC valves include a rubber diaphragm seal with an infinitely variable operating. As the float rises, it slowly closes the diaphragm seal and reduces the airflow. This function slows the water column to prevent water hammer. In addition, the variable orifice seal allows utilities to standardize using the same air valve on every high point on all their force mains.

Air Release and Vacuum Valve – Model 990-00

  • Automatic and infinitely variable air valve for wastewater applications
  • Valve body of US made stainless steel 316
  • AIS compliant
  • Maximum Operating Pressure: 250 PSI
  • Non-leaking seal closes at 0 PSI
  • Valve seal does not contact the sewage
  • Two connections for effective flushing during maintenance
  • Corrosion-resistant materials
  • NPT or flanged connection

Air Release and Vacuum Valve – Model 989-00

  • Automatic and infinitely variable air valve for wastewater applications
  • Short body allows for installation in tight spaces
  • Maximum Operating Pressure: 150 PSI
  • Non-leaking seal closes at 0 PSI
  • Valve body of 316 stainless steel
  • Valve seal does not contact the sewage
  • Corrosion-resistant materials
  • NPT or flanged connection

Air Release and Vacuum Valve – Model 986-01

  • Automatic and infinitely variable air valve for wastewater applications
  • Maximum Operating Pressure: 250 PSI
  • Non-leaking seal closes at 0 PSI
  • Valve body of 316 stainless steel
  • Valve seal does not contact the sewage.
  • Two connections for effective flushing during maintenance
  • Corrosion-resistant materials
  • NPT or flanged connection

Air Release and Vacuum Valve – Model 986-03

  • Automatic and infinitely variable air valve for wastewater applications
  • Maximum Operating Pressure: 250 PSI
  • Non-leaking seal closes at 0 PSI
  • Valve body of epoxy-painted steel
  • Valve seal does not contact the sewage.
  • Two connections for effective flushing during maintenance
  • Corrosion-resistant materials
  • NPT or flanged connection

Air Release and Vacuum Valve – Model 988

  • Automatic and infinitely variable air valve for wastewater applications
  • Maximum Operating Pressure: 250 psi
  • Non-leaking seal closes at 0 PSI
  • Patented valve seal does not contact the sewage
  • Infinitely variable surge protection
  • The design of the H-TEC 988 ARV allows for large volumes of air (in/out).
  • Air release capacity up to 2,500 CFM
  • Vacuum flow rate is 3,000 CFM at 12 PSI negative pressure
  • Two connections for effective flushing during maintenance
  • Corrosion-resistant materials
  • NPT or flanged connection

Air Release and Vacuum Valve – Model 986-00

  • The Model 986 automatic air and vacuum valve with shut-off can be used to replace existing air valves
  • Eliminates confined space entry requirements
  • The air valve with shut-off installed on 2" FNPT pipe ends
  • All maintenance and repair is done from the surface
  • Maximum Operating Pressure: 250 PSI
  • Non-leaking seal closes at 0 PSI
  • Air valve body: stainless steel
  • Shut-off valve: Epoxy powder coating, stainless steel blade
  • NPT or flanged connection

FEATURES

Innovative Design

The large body prevents contamination by creating a large air gap. The beveled bottom allows debris to be quickly and easily flushed back into the force main. The smooth interior surface ensures debris does not plug the valve. The debris shield prevents solids from contaminating the seal.

Non-Leaking

The valve will seal drip tight even at 0 psi pressure in the process piping. Traditional ARV's require 3 PSI or more to close the seal, resulting in a release of sewage.

Infinitely Variable Air Discharge/Intake

The unique cup seal allows infinitely variable amounts of air in, or out as needed by the application.

Easy Maintenance

Service personnel can easily remove the working parts of the valve through the top of the valve, including the cup seal.

Corrosion Resistant Materials

The internal components are stainless steel and high-grade plastics such as Buna-N, Polyethylene, and Delrin®. They will not corrode in wastewater applications. H-Tec valves provide years of dependable service in corrosive environments.

Light Weight

H-Tec valves weigh much less than traditional air release valves making installation and maintenance easier.

Readily Available Parts and Service

Parts are readily available and easy to obtain. Local service is available.

LITERATURE

H-Tec Air Release and Vacuum Valves for Wastewater

Replace your old air release valves with H-Tec air release valves

H-Tec Providing Pipeline Protection & Efficiency with Automatic Air Release & Vacuum Valves

H-Tec Model 986 Automatic Air and Vacuum Valve for Wastewater

H-Tec Model 990 Automatic Air and Vacuum Valve for Wastewater – Made in the USA

H-Tec Model 988 Automatic Air and Vacuum Valve for Wastewater

H-Tec Model 986-00 Automatic Air and Vacuum Valve for Wastewater with Shut-Off

H-Tec Model 986-03 Automatic Air and Vacuum Valve for Wastewater with Epoxy Coated Body

SPARE PARTS

H-Tec Replacement Parts

H-Tec is the leading manufacturer of high-quality drinking water and wastewater air release valves. At Envirep/TLC, we will help you choose the best H-Tec parts for your needs.

Envirep is an authorized distributor of H-Tec products, and we carry a large inventory of spare parts, so our customers receive the best service possible.

Need Assistance? Let Us Help!

Our team at Envirep/TLC is well versed in all fields of water and wastewater systems. We can help you select the right parts & equipment based on your requirements. Talk to one of our engineering experts today at 717-761-7884 or email us at sales@envirep.com.

Have questions? We're here to help.