3-Way Control Valves

Universal control valve baelz 342-B

Universal control valve for industrial applications. Angle way Kvso = 2% (class I).

FluidNominal pressureNominal diameterBody materialTemperature range
water / hot waterPN 16 – 25DN 15 – 125spheroid ductile iron (5.3103)-10°C to 240°C

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Universal control valve baelz 342-B


Universal control valve baelz 342-BK and baelz 342-BK-SS

Universal control valve with cooling tube for industrial applications.
Type baelz 342-BK-SS additionally with stainless steel bellows, for applications using thermal oil.
Angle way Kvso = 2% (class I).

FluidNominal pressureNominal diameterBody materialTemperature range
water / hot water;

thermal oil

PN 16 / 40DN 15 – 125spheroid ductile iron (5.3103) /

cast steel (1.0619)

-10°C to 350°C

Download Datasheet

Universal control valve baelz 342-BK and baelz 342-BK-SS


Universal control valve baelz 347-B and baelz 347-BB

Universal control valve for industrial applications. Straight way and angle way Kvso = 0,004% (better than class IV). Perfect suited to complex control solutions.

FluidNominal pressureNominal diameterBody materialTemperature range
water / hot water

 

 

PN 16 – 25DN 15 – 300spheroid ductile iron (5.3103)-10°C to 240°C

Download Datasheet

Universal control valve baelz 347-B and baelz 347-BB


Universal control valve baelz 347-BK and baelz 347-BK-SS

Universal control valve with cooling tube for industrial applications.
Type baelz 347-BK-SS additionally with stainless steel bellows, for applications using thermal oil.
Straight way and angle way Kvso = 0,004% (better than class IV).

FluidNominal pressureNominal diameterBody materialTemperature range
water / hot water;

thermal oil

PN 16 / 40DN 15 – 300spheroid ductile iron (5.3103) /

cast steel (1.0619)

-10°C to 350°C

Download Datasheet

Universal control valve baelz 347-B and baelz 347-BB


Balanced universal control valve baelz 347-B-EMF

Balanced universal control valve for industrial applications with relatively constant operating conditions. Straight way and angle way Kvso = 0,004% (better than class IV).

FluidNominal pressureNominal diameterBody materialTemperature range
water / hot waterPN 16 – 25 / 40DN 15 – 300spheroid ductile iron (5.3103) /

cast steel (1.0619)

-10°C to 240°C

Download Datasheet

Balanced universal control valve baelz 347-B-EMF


Balanced universal control valve baelz 347-BK-EMF

Balanced universal control valve with cooling tube for industrial applications with relatively constant operating conditions. Straight way and angle way Kvso = 0,004% (better than class IV).

FluidNominal pressureNominal diameterBody materialTemperature range
water, hot waterPN 16 – 25 / 40DN 15 – 300spheroid ductile iron (5.3103) /

cast steel (1.0619)

-10°C to 315°C

Download Datasheet

Balanced universal control valve baelz 347-BK-EMF


ANSI control valve baelz 367

Flanged control valve with pressure ratings according to American ANSI/ASME standards.

FluidNominal pressureNominal diameterBody materialTemperature range
hot water / cold water,

glycol (up to 50%),

thermal oil

ANSI 300DN 15 – 250
(1/2″ – 10″)
cast steel (SA216WCB)-29°C to 343°C
(-20°F to 650°F)

Download Datasheet

ANSI control valve baelz 367


In constant flow applications, the bi-directional ports of a 3-way control valve allow water to bypass the coil or load through mixing or diverting. An actuator is used to force an upward and downward movement of the valve’s plug which works to open and close off the different ports to redirect pressure and flow. Mixing applications have two inlets and one outlet, while diverting applications move water through one inlet and two outlets. The three-way valve is more cost effective control option for diverting or mixing applications than the use of multiple 2-way valves.

Three Way Valve InformationHow It Works: 3-Way Valves

  • 3 main components: Valve body, Actuator, Spindle and Plug
  • You can use pneumatic or electric actuation
  • Available in many different diameters (15mm – 300mm)
  • Different size actuators are available for different size valve bodies.
  • There are three ports: A, B and AB
  • Ports are bidirectional
  • Tight seal leakage protection

These valves operate using an actuator which moves the valve plug up and down; this plug opens and closes the valve’s ports to help redirect the pressure and flow of the passing fluid.

As mentioned earlier, 3-way valves can be used solely for opening or closing a passage, or for modulating and precisely controlling the flow and temperature of the process. In comparison to 2-way valves are a most cost-effective choice for diverting and mixing applications.

Three Way Control Valves

Three Way Control Valves Ebook

This technical ebook provides a technical description of how Baelz 3-Way valves can be used as mixing or diverting valves, as well as the advantages that come with utilizing the Baelz 3-way valve.

Download your copy here

3-Way Mixing Valves vs. 3-way Diverting Valves

Based on desired function, 3-way valves can be installed either as mixing or diverting valves. While a mixing valve has two inlets (A and B) and one outlet (AB), a diverting valve has one inlet (AB) and two outlets (A and B).

In diverting valves, the plug closes against the seat. Diverting valves should be used with low differential pressures and electric actuators rather than pneumatic. However, diverting valves can only be used in applications with low differential pressure, and can should be sued in with electric actuators- rather than pneumatic ones – as large drops in pressure may cause hammering of the plus. For these reasons, installing 3-way-valves as mixing valves is simpler and easier than installing them as diverting valves.

Applications

These valves are ideal for heating and cooling hot oil, water, and steam applications.

It is very important to orient the valves properly when using 3-way valves in mixing or diverting. 3-way valves are most commonly used as a bypass valve, which can be used on a primary or secondary loop.

Industries

  • Wood
  • Automotive
  • Food
  • Municipal Steam
  • Marine
  • Petroleum

Contact Baelz NA for 3-Way Control Valves

As the official distributor of Baelz Automatic actuators, controllers, and valves, Baelz North America is proud to offer top-quality 3-way control valves. Curious to learn more about the benefits and uses of 3-way valves, or need to discuss your application with an expert? Contact us today.

3-way control valve eBook

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