IAPMO IGC 305-2019 ABS and PVC Horizontal Backwater Valves with Lifting Devices
Description
1 Scope
1.1 Scope
This Standard
(a) covers backwater valves
(ii) intended for use in horizontal pipe runs (e.g., to floor drains, sewers, and holding tanks);
(ii) equipped with a moving sealing element that can be removed with a lifting device; and (iii) having an overall length of the access structure that may be more than 600 mm (24 in) from the access opening; and
(b) specifies requirements for materials, physical characteristics, performance testing, and markings.
Note: Horizontal backwater valves covered by this standard are classified in CSA B181.0 as Type IV backwater valves.
