Two-way/ three way Control Valve

Application:

The two-way valve (a three-way valve may also be used) is installed in heating and cooling systems

with a closed water circuit (e.g. central heating systems, fan coil units, chilled ceilings or fan convectors)

and serves the flow volume and temperature control in combination with actuators and thermostats.

When used as a three-way valve, it is for mixing or distributing the volume flows in bivalent heating

systems or hot water storage cylinders, for instance in solar or heat pump installations.

Material:

Valve body made of Ductile Iron, disc and stem made of Stainless steel, Seal ring made of Teflon.

Function:

When used as a two-way valve, the SUNFLU two-/three-way valve has one inlet port (A) and one outlet 

port (AB).

If the stem is pressed down, the straight port (AAB) is opened.

The central nipple is closed with a blind flange. The valve can be used as three-way valve after removal 

of the blind flange.

When used as a three-way mixing valve, the valve has two inlet ports (A and B) and one outlet port 

(AB).

Depending on the position of the valve disc, the cold and hot water is mixed. If the stem is pressed 

down, the inlet port A is opened and the inlet port B is closed.

When used as a three-way diverting valve, the valve has one inlet port (AB) and two outlet ports (A and 

B).

Depending on the position of the valve disc, the direction of flow is diverted from one to the other outlet 

port.

Technical data:

Permissible Pressure: PN16

Standard of flanged connection: ISO 7005-2

Leakage rate: 0.002% of Kvs

Permissible Media: Chilled water, cooling water, Anti-freeze water, Refrigerant, (R12、 R22、R134a、

R202)

Glycol, Hydrazine, Phosphate, Low and high temperature hot water, Saturated 

steam(≤130℃or≤0.1MPa)

Temperature: -10-130℃

Stroke: 20mm (DN40~DN65),  30mm (DN80), 40mm (DN100~DN150)

Dimension:

1. Valve

2. Electric Actuator

3. Size