Three way valve
Three way control valves are designed to be used as mixing and diverting devices. The construction and materials used ensure the highest flow rate among modern three way valves, as well as reliability and a long service life. Regardless of their design, valves are "flow to open", which guarantees the dynamic stability of the plug in the flow.
Technical specifications
-
Nominal diameter DN 25 to 300 mm
-
Nominal pressure PN 1,6 to 10 MPa
-
Operating temperature - 29 to 454 °С
-
Flow capacity Сv 6…1080 / Kv 5,2…929
-
Flow characteristic linear
-
Rangeability 100:1
-
Seat leakage class II, III or IV according to GOST 9544-2015
-
Body material carbon steel / cold-resistant steel / heat-resistant steel / stainless steel
-
Packing material carbon + PTFE / graphite
-
Connection flanged / welded
-
Actuator pneumatic spring-diaphragm / pneumatic piston / electric / manual
Execution options
Special materials
Bodies made of special alloys Uranus B6, or Hastelloy C for highly aggressive media, or bronze for oxygen applications. Materials compliant with NACE standard requirements for hydrogen sulfide-containing media.
Mixing or diverting valve
It allows for the mixing of two flows or the splitting of one flow into two directions, with precise flow control.
With extension bonnet for high temperature or cryogenic applications
Extension bonnet ensures effective thermal insulation of the gland packing assembly: heat from the process fluid is not transferred to the actuator and seals, thereby maintaining the temperature in the gland zone below 100 °C. This configuration guarantees reliable valve performance in both high-temperature and cryogenic service, ensuring tightness, precise regulation, and an extended service life for the Carbon/PTFE gland packing.
With a drain plug
It allows the working medium to be drained from the valve body for maintenance or preservation without its removal from the pipeline.
In accordance with the requirements of the NACE MR 0103/01-75 standard for media containing hydrogen sulfide
This valve is built with corrosion-resistant materials and a robust design to withstand hydrogen sulfide. It guarantees long-term durability and dependable performance in aggressive environments where selective or general corrosive wear may occur, adhering to NACE MR 0103/01-75 standards for the oil and gas and chemical industries.
For oxygen service
The valve design and materials prevent fire or decomposition upon contact with oxygen, ensuring safe operation in oxygen-containing environments.
With adaptation to an aggressive environment containing corrosive gases or acid vapors, as well as the marine atmosphere
The valve is constructed with materials and protective coatings that ensure resistance to corrosion and durability when operating in aggressive industrial and coastal environments. It ensures dependable operation in environments containing acidic or corrosive gases and high marine air humidity.
With a steam jacket heating
To maintain the temperature of the working medium inside the valve. The steam jacket ensures uniform heating of the body, preventing thickening or crystallization of viscous or temperature-sensitive fluids, and also reduces the risk of condensate formation. It is used in systems with high medium viscosity or in low-temperature environments.
With bellows seal
Designed for installations with increased requirements for tightness and safety. Tightness is ensured by a metal bellows, which completely prevents the working medium from escaping into the atmosphere, even during long-term operation. The bellows operates under external pressure and is protected by guide bushes, ensuring resistance to vibrations and pressure drops. This design is optimal for toxic, explosive, and vacuum media where leakage is unacceptable, and guarantees durability, reliability, and maintenance-free operation of the packing gland assembly.
With a leak-off packing
The valve is equipped with a control system for detecting and diverting minor leaks through the gland packing, which prevents the working fluid from entering the environment and enhances operational safety. This design allows for prompt detection and control of leaks, reducing the risk of accidents and the need for frequent maintenance.