VTTR20-2,5 VTTV / VTTR / VTTB - 2-way, 3-way and 3-way (bypass) zone valves DN15-20, kvs 0.25-6.0

Valves for control of heating and cooling in fan-coil or chilled beams applications. The valves are intended to be used together with the thermal RTAN and RTAOM actuators. They are available as 2- and 3-way versions, as well as bypass versions. The valves have linear flow characteristics. The adapter for RTAOM…actuators is delivered with the valve.

Specifications

Software & documentation

Accessories

Specifications

Specifications for VTTR20-2,5
Connection	G 3/4
Actuator connection	M30 x 1,5
Stroke	2.5 mm
Nominal diameter	DN20
Kvs	2.5 m³/h
Max. diff. pressure	250 kPa

Specifications for VTTV / VTTR / VTTB - 2-way, 3-way and 3-way (bypass) zone valves DN15-20, kvs 0.25-6.0
Application	Heating, Cooling, Fan coil, Chilled beams
Pressure rating	PN16
Connection types	BSP externally threaded according to ISO 228/1
Flow characteristics	Linear
Leakage	0.0 % of Kvs (No leakage)
Media	Hot water, Cold water, Glycol-mixed water (max. 40 % glycol)
Closing direction	When stem is pulled outward
Media temperature	2…95 °C
Body	Brass CW614N
Seat	Stainless steel 1.4305
Plug	PA + GF
Stem	PA + GF
O-rings	FKM
Stuffing box	PPO + GP
Spring	Stainless steel