Specialty Valves & Assemblies


C8/CR Series: Cryogenic

Triac C8/CR Series 3-Piece Manual Ball Valves feature a direct mount automation pad. The high quality investment castings feature a fully machined bore. The superior live-loaded packing system is accomplished with Belleville washers, “V” ring packing and a unique primary pyramidal stem seal. This advanced sealing system provides for protection against stem leaks experienced by ordinary ball valves.


DR Series: 3-Way Temperature Control

FM Approved Assemblies

Valve Assemblies for Liquid and Gas Shut-off Requirements

  • Supervisory Cocks
  • FM Approved

These assemblies are FM approved for use in applications requiring protection for fuel burning equipment per FM class 7400, 7412, 7420 and 7422. The components include a spring return automated ball valve, explosion-proof limit switch and solenoid pilot valve. Assemblies feature the latest in quarter-turn automation, rack and pinion actuator design; a marked improvement from the older spring-diaphragm technology. The actuator, combined with the superior valve seating and stem seal design, provides for reliable and consistent closure when needed. These assemblies provide for a compact fuel gas safety shut-off system.

  • Sizes 1/2" - 6", 316 SST or WCB 
  • 3-piece design with threaded, socket weld or butt weld end connections
  • Flanged design available with ANSI Class 150 or 300 rating
  • Manual safety cocks and automated safety shut-off valves
  • Solenoid approved for waterproof and explosion-proof environments
  • Valves feature patented pyramidal stem seal system

P1 Series: Piggable

Butterfly Valve Tee Assembly

A-T Controls’ Butterfly Valve Tee Assemblies provide a cost-effective, alternative to a 3-way valve solution. Available for lug style butterfly valves, these unique tee assemblies can be customized to fit your application. Consult factory for valve selction and assembly options.

  • Sizes 2" - 36"
  • Lug style Ductile Iron body
  • Various seat options for special application

Painless Stainless: Stainless Steel Ball Valve Packages

T5 Series: Tank Bottom

Triac TB Series Tank Bottom Valves are of 316SS construction and feature the Series 55 Valve body. The 3-piece design allows for easy maintenance and assembly. The weld-in-place tank pad is designed to bolt directly to the valves center body. It can be fitted with threaded, socket weld, butt weld or 150# flanged mating end.


TA-Luft: Low Emissions Ball Valves

In March of 2007 A-T Controls received TA-Luft Low Emission certification for broad range of valves with a patented "Pyramidal Stem Seal" system.  At that time fourteen different TRIAC series valves with the live-loaded packing system passed the TA-Luft standard that was established by the German TUV agency (Technischer Uberwachungs-Verein).  Considered the world's most stringent standard on valve emissions, TU-Luft testing requires less than 1 ppm leakage through the valve stem.

Fugitive valve emissions are a major environmental and economic issue for process industries. TRIAC valves can reduce fugitive emissions and lost product by 99% or more compared to legacy control valves. A-T is excited to offer such a range of valve choices to help industries in their drives to reduce emissions.

The TRIAC TA-Luft certified valves employ a unique live-loaded pyramidal stem packing system. This features a patented 45° pyramidal stem and stem seal with Belleville washers and PTFE chevron style stem packing, protecting against stem leaks experienced with ordinary ball valves.

The TRIAC valves also feature a patented automation pad that allows direct mounting of ISO5211-compliant actuators to eliminate the cost and fabrication of special couplings or brackets. 

A-T Control's product literature identifies each valve model carrying the TU-LUFT certification with a green logo.


WB/W6 Series: Dual Valve Isolation

Installing an A-T Controls WB Series block & bleed valve assembly eliminates the need for isolation on well head pressure relief feed, filter skid pressure relief and dryer skid relief feed lines. This changes the dynamics of pressure relief re-certification! Eliminate the need for additional maintenance and component removal reduces down-time, and the possibilities of leakage and gasket replacement.