Product Overview

The CLA-VAL 52-03: Surge Anticipator and Pressure Relief Valve is typically installed near a pump on a discharge line to atmosphere. While gradual starting and stopping of pumping systems prevent harmful surges, abrupt pump shutdowns (e.g., due to power failure) can cause dangerous surges and severe equipment damage. The CLA-VAL 52-03 anticipates these surges by opening on the low pressure wave, ensuring it is fully open on the returning high wave to effectively divert excess pressure. As part of the CLA-VAL SERIES 50, it also functions as a sustaining valve, accurately maintaining a minimum preset inlet pressure, and as a relief valve that opens fast to dissipate excess system pressure. It offers simple, reliable, and accurate operation with complete automation.

Key Benefits

• Proactive Surge Protection: Anticipates and diverts dangerous pressure surges caused by abrupt pump shutdowns (like power failures) by opening on the low-pressure wave.
• Dual Pressure Control: Functions as both a fast-opening pressure relief valve (dissipating excess system pressure) and a pressure sustaining valve (maintaining minimum preset inlet pressure).
• Protects Equipment: Safeguards pumping systems and installations from severe equipment damage due to high-pressure surges.
• Automatic Operation: Provides completely automatic, simple, reliable, and accurate performance without constant manual intervention.
• Quality Approved Materials: Manufactured with quality-approved materials, ensuring durability and long service life.

Applications

The CLA-VAL 52-03 is a vital component for pumping systems requiring robust surge protection and pressure management:

• Installation near a pump on a discharge line to atmosphere for surge anticipation.
• Protecting systems against high pressure surges during pump shutdowns.
• Maintaining stable pressure in water distribution lines.

Features & Construction

• Pressure Relief Control: CRL.
• Series: CLA-VAL SERIES 50.
• Anticipates surge by opening on low pressure wave.
• Diverts excess pressure by being fully open on returning high wave.

Customisation Options

• Operational Enhancements:
  • LFS Option: For controlling low flows or night flows.
  • KO Option: To extend valve life with Anti-Cavitation trim.
  • KG1 Option: Use stem cleaning for harsh water.
• Maintenance & Monitoring:
  • Option to check on periodic maintenance.
• Environmental Adaptability: Options to adapt to high temperatures or frost risk.
• Security & Protection: Options to add hydraulic safety back-up to your valve or remove excessive system overpressures.
• Corrosion Protection: Possibility to protect the valve with upgraded materials.
• Recommended Assembly: Can be combined with a Pump Control Valve (CLA-VAL 60-31/02), Strainer (AQUA 90-501), and Sensing line for optimal regulation.

Technical Specifications

Specification	Value
Series	CLA-VAL SERIES 50
Function	Surge Anticipator and Pressure Relief Valve
Pressure Relief Control Model	CRL

Installation & Maintenance

• Installation: Typically installed near a pump on a discharge line to atmosphere. Its strategic placement allows it to anticipate and divert dangerous surges during abrupt pump shutdowns.
• Maintenance: Periodic maintenance checks are recommended. The valve's robust design and quality-approved materials contribute to its durability and long service life, reducing ongoing maintenance requirements.