{ "culture": "en-US", "name": "", "guid": "", "catalogPath": "", "snippet": "", "description": "Sewer Control valves are a set of valves that operate in special ways. Air control valves are control valves that are used to either relieve the system of trapped air or vacuums that may develop. Check valves are self-activating valves that permit gases and liquids to flow in only one direction, preventing process flow from reversing. They are classified as one-way directional valves.", "summary": "", "title": "Sewer Control Valve", "tags": [], "type": "", "typeKeywords": [], "thumbnail": "", "url": "", "minScale": 0, "maxScale": 0, "spatialReference": "", "accessInformation": "District of Saanich", "licenseInfo": "" }