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Tank-Valves
Tank Valves

Tank Valves

These Tank Valves are designed to protect process tanks and piping systems from the dangers of vacuum or over-pressurisation. Designed as lightweight, hygienic breather valves, the 645 Series ensures system integrity during operation by allowing controlled air movement into or out of the tank as required, maintaining a safe internal environment at all times. A precision-calibrated spring, seat-seal assembly, and polymer bushing are enclosed within a robust stainless steel housing, providing dependable and durable performance even under demanding process conditions.

  • Storage & Process Tanks
  • Fermentation Vessels
  • Pharmaceutical Processing
  • Food & Beverage
  • Chemical Manufacturing
Technical Specifications
Feature Specification
Sizes Available DN40 – DN100 (1½” – 4″)
Sealing Materials EPDM, FPM (FKM), VMQ (Silicone)
Vacuum Break Pressure 0.007 Bar (0.09 psi)
Opening Pressure (positive pressure) 0.07 Bar (1 psi)
Sterilisation Temperature Up to 135°C
Housing Material Stainless Steel
Bushing Material Special Polymer
Key Features
  • Lightweight, Compact Design: Facilitates easy installation without compromising durability
  • Hygienic Construction: Suitable for high-purity and sanitary applications
  • Reliable Protection: Prevents vacuum formation and over-pressurisation inside tanks and piping
  • High-Temperature Resistance: Sterilisation capable up to 135°C (284°F)
  • Calibrated Operation: Ensures consistent pressure control with minimal maintenance
Benefits
  • Maintains optimal tank and system pressure automatically
  • Protects vessel integrity and product quality
  • Reduces maintenance costs through reliable, long-lasting design
  • Compatible with CIP/SIP systems for efficient cleaning and sterilisation
  • Suitable for a wide range of hygienic and industrial applications