1. Foot-operated for labor-saving convenience: The cover is opened by stepping on a foot lever, eliminating the need for manual lifting and allowing operators to use both hands for measurement, significantly reducing labor intensity.
2. Reliable sealing for leak prevention: The cover and seat are equipped with rubber or PTFE sealing rings, providing zero leakage when closed, effectively preventing vapor loss and ingress of external contaminants.
3. Guide tube design for accurate measurement: An internal dipping guide tube ensures that the dip tape or sampling tube enters the tank vertically, guaranteeing accurate measuring points and avoiding sticking.
4. Dust and rain protection structure: The top features a dust cover or flip lid to prevent rain, dust, and debris from falling into the hatch, suitable for harsh outdoor environments.
5. Corrosion-resistant materials: The housing and internal parts are made of aluminum alloy, cast steel, or stainless steel; seals are made of oil-resistant rubber or fluororubber, suitable for various media such as oil products and chemical solvents.
6. Safe operation with optional lock: An optional locking device prevents unauthorized access, enhancing tank farm safety.
7. Easy installation and maintenance: Standard flange connection for direct mounting to tank flanges; foot mechanism and seals are easy to replace, keeping maintenance simple.
8. Compliant with relevant standards: Designed and manufactured according to GB/T 21451 (Petroleum and liquid petroleum products – Measurement of liquid level in storage tanks) and other applicable codes.