A throttle valve is a component of the ventilation system used to control the speed and volume of air flow in shelters and bomb shelters. This device allows you to equalize air resistance and adjust its volume.
Valves can be round or rectangular. Throttle valves for bomb shelters are made of thick sheet metal to protect against the blast wave. The stuffing box in the design of the DZ is used to ensure the sealing of the gaps.
Series
Marking
D
D1
D2
H
L
d
n
ДЗ
100
100
185
205
133
290*
9
8
150
150
235
255
153
320*
9
8
200
200
275
305
173
340*
9
8
225
225
300
330
183
355*
9
8
250
250
325
355
193
365*
9
8
300
300
400
430
213
390*
9
8
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