Shut-Off Gate Valve Ma 220; Downpipe L = 1.0 M; Special Adaptor - Viessmann KOB PYROTEC Technical Manual

Design information
Trade name
Type
Part no:
a
b
c
d (Di)
e (Da)
e (Di)
e (Da)
f
Output, drive
Drive speed

Shut-off gate valve MA 220

Part no. 7388 020
Fire protected appliance for installation in a drop section, for mechan-
ical separation of the combustion system and unpressurised fuel store.
The shut-off gate valve opens automatically and closes with zero volts
via a spring balancer in the event of burnout, risk of burn-back or power
failure.
Material: Steel/brass
Drive: Spring return motor, fire protection: RSE according to TRVB and
VKF
Standard delivery:
■ Shut-off gate valve according to order data
■ Control of shut-off gate valve according to boiler control unit
■ Spring return motor (torque 30 Nm)
6

Downpipe L = 1.0 m

Part no. 7387 942
Connection of a drop section between the discharge system or con-
veyor device and an onward conveyor device by means of a downpipe.

Special adaptor

Part no. 7387 939
Connection of a drop section between the external discharge system
and an onward conveyor device by means of a special adaptor.
80
(cont.)
Rotary lock valve
MZ 190
7387 967
mm 260
mm
7193
mm 662
mm 150
mm 200
mm 150
mm 200
mm 274
kW 0.75
rpm 252
B
13,91 mm
230
410
785
1015
A Shut-off gate valve closed
B Shut-off gate valve open
Note
The length of the downpipe is 1 m.
Design (diameter, profile) of the downpipe is matched to the relevant
project at the factory.
Note
Design (diameter, profile) of the special adaptor is matched to the rel-
evant project at the factory.
MZ 260
7387 422
330
7264
709
202
250
202
250
346
0.75
25
A
605
230
PYROTEC