The VZ308E is a small linear three-way zone valve used for the control of hot or chilled water in terminal units. It is designed to be used with the MZ140 family of thermal actuators. The valves utilise a double O-ring design on the plug to ensure a leak tight seal on both valve ports, this ensures no loss of energy leakage through the valve. The valve is BSP male threaded valves with flat face seals, a range of connection sets are available to mate onto pipe. Size DN 15, G1/2A connection, 1.6 Kvs. Pressure class PN16, stroke 2.5 mm, Normally closed (A-Ab). External thread to ISO 228/1 (flat face seal).
Specifications:
|
Main |
|
|
Product or component type |
Valve |
|
Valve type |
Zone |
|
Device application |
Fan coil unit |
|
Chilled ceiling |
|
|
Terminal unit |
|
|
Medium compatibility |
Glycol 25 % |
|
Glycol 30 % |
|
|
Water |
|
|
Glycol 50 % |
|
|
Valve configuration |
3-Way |
|
Valve connection type |
G External |
|
Valve connection size |
G 1/2A |
|
Body size |
15 mm (1/2 in) |
|
Pipe size |
15 mm |
|
Flow characteristic |
Uncharacterized |
|
Flow coefficient B to AB |
1.16 cv |
|
1 kvs |
|
|
Flow coefficient |
1.6 kvs |
|
1.85 cv |
|
|
Pressure class |
PN16 |
|
Pressure fluid max delta P quiet service |
62.05 kPa |
|
Pressure fluid max delta P normal life |
255.1 kPa |
|
Seat leakage |
Port A: Class IV-S1 (0.005 %) |
|
Stem movement |
Linear |
|
Trim material |
Brass |
|
body material |
Brass |
|
Stem material |
Stainless steel AISI 303 |
|
Seating seal material |
Port A:EPDM (ethylene propylene diene monomer) |
|
Stem seal material |
EPDM (ethylene propylene diene monomer) |