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Instrument and meter
Breathing Manhole (HXF-HR)
Single call valve (HXF-V)
Single suction valve (HXF-VI)
Emergency emptying manhole (HXF-R)
Hydraulic safety valve (HXF-Y)
Equipped with exhalation connection breathing valve (HXF-IV)
Equipped with dual tube breathing valve (HXF-II)
89 type breathing valve (ZFQ-89)
Breathing valve with suction connection (HXF-III)
88 type breathing valve (ZFQ-88)
Successful operation!
