12in Threaded Tank Lid with Non-Return Valve – 350mm Polypropylene

Threaded polypropylene tank lid featuring an integrated non-return valve for sealed water tank systems.

This 12-inch tank lid threads securely into a compatible lid ring collar, creating a watertight seal. The built-in non-return valve permits air circulation during filling and prevents external contaminants from entering the tank. Lightweight polypropylene construction ensures durability without excess weight.

Key Features

• Integrated non-return valve allows air escape without contamination ingress
• Durable, lightweight polypropylene construction
• Ergonomic handle for quick, tool-free opening and closing
• Secure threaded connection for watertight seal
• Compact 29mm depth

Specifications

• Overall diameter: 350mm
• Thread diameter: 313mm
• Depth: 29mm
• Material: Polypropylene

Applications

• Water storage tank systems
• Above-ground and below-ground tank installations
• Agricultural and industrial water storage
• Potable water containment
• Systems requiring pressurisation or venting control