NBS Source
List your products
Description

A range of fully automatic PVC single and double self-closing flap valves for 100 or 150 mm sewage and waste pipelines. Manual closure is possible in an emergency.

Devices for sewage pipelines include external control panel with warning device and integral buffer battery (electrical supply required). Backflow stop will operate up to 8 hours following power failure.

General information
Specification data - Anti-flood valves
Product Reference

28100 Harmer backflow stop valve

Automatic backflow stop valve for 100 mm diameter sewage pipeline; dust cover included.

28100s Harmer backflow stop valve

Automatic backflow stop valve for 100 mm diameter sewage pipeline; grating included; outlet invert 370–550 mm.

28150 Harmer backflow stop valve

Automatic backflow stop valve for 150 mm diameter sewage pipeline; dust cover included.

28150s Harmer backflow stop valve

Automatic backflow stop valve for 150 mm diameter sewage pipeline; grating included; outlet invert 370–550 mm.

72100 Harmer backflow stop valve

Backflow flood water shut off valve for 100 mm waste pipes.

72150 Harmer backflow stop valve

Backflow flood water shut off valve for 150 mm waste pipes.

73100 Harmer backflow stop valve

Backflow stop valve for 100 mm continuous waste pipes.

73150 Harmer backflow stop valve

Backflow stop valve for 150 mm continuous waste pipes.

74100.10 Harmer backflow stop valve

Backflow stop valve for 100 mm waste pipes; adjustable grating included.

74150.10 Harmer backflow stop valve

Backflow stop valve for 150 mm waste pipes; adjustable grating included.