Fuel Tank Vent Valve

Pressure relief valves and venting components are critical safety and operational devices for tank trucks and transport/storage systems. They effectively protect tanks from overpressure or vacuum conditions, ensure smooth breathing during loading and unloading operations, and prevent liquid or vapor emissions from impacting the environment. Leading manufacturers such as Perolo design these components with precision engineering, high reliability, and strict compliance with international safety standards.

Role of Pressure Relief & Venting Components in Tank Truck Operations

Pressure relief and venting components regulate internal tank pressure during transport and loading/unloading operations, protecting tank structural integrity, preventing product leakage, and ensuring compliance with global regulations (such as ADR, IMDG, RID). These components are typically integrated with bottom loading systems and vapor recovery systems, enabling safe and efficient liquid transport operations.

Core Components & Functions
1. Safety Relief Valves (Pressure & Vacuum Relief Valves)

Safety relief valves are key protective devices that automatically open when tank pressure exceeds safe limits or when vacuum occurs, preventing structural damage.

Perolo YAK™ and MEGA SUPERVENTIX™ Safety Relief Valves

Available in single- or dual-action to protect tanks from both overpressure and vacuum

Made of 316/316L stainless steel for corrosion resistance and long service life

Available in multiple connection sizes: 1½″ (ND40), 2″ (ND50), 2½″ (ND65), and 3″ (ND80)

Compact design with high flow rate, suitable for chemical, fuel, or food-grade tank trucks

Key Functions:

Automatically release internal pressure during overpressure events

Allow air entry when vacuum exceeds preset limits

Maintain safe operating pressure under varying temperatures and loading conditions

2. Venting Valves & Venting Assemblies

Perolo Venting Valves

Allow tanks to breathe freely with the atmosphere during loading/unloading

Automatically open when internal vacuum drops below set limits to prevent tank stress

Made of durable materials (stainless steel or carbon steel) with PTFE/FEP seals, suitable for various venting and protective applications

Overturn Protection Vent Devices

Combine venting functions with anti-spillage protection

Mounted on tank flanges to enable passive venting while minimizing environmental emissions

Typical Applications

Road tank trucks transporting fuel, chemicals, or food-grade liquids

ISO tank containers and storage tank systems

Bottom loading and vapor recovery systems

Emergency breathing and safety protection systems

Environmental emission control installations

These components ensure that tank trucks maintain safe internal pressure during transport and terminal operations while complying with regulatory and environmental requirements.

Advantages of Choosing Industry-Leading Designs

Selecting pressure relief and venting components from leading brands like Perolo offers:

Reliable pressure control, protecting tank structure and cargo integrity

Automatic vacuum and overpressure response, ensuring safe tank breathing

High-flow, compact design, enhancing operational efficiency

Durable materials and advanced sealing technologies, suitable for harsh environments

Compliance with international transport and safety standards, suitable for global operations

These advantages make them the preferred choice for tank truck fleets, fuel stations, and industrial bulk liquid operations.