Wastewater Air Release Valve type 34WW | Cla-Val | Philippopoulos s.a.
Wastewater Air Release Valve type 34WW | Cla-Val | Philippopoulos s.a.

Wastewater Air Release Valve type 34WW | Cla-Val

Cla-Val 34WW for Wastewater Applications

The Cla-Val 34WW is an air release valve engineered for wastewater and industrial effluent pipelines. It is installed at high points in pressurized networks where air and gases accumulate, discharging small volumes before significant air pockets form. This prevents flow restriction and mitigates the risk of hydraulic disruptions.

Operation

The 34WW is not a primary air intake valve or vacuum breaker. Its function is continuous air release under pressure in wastewater systems, aiming to reduce air binding, head loss, and increased energy consumption at pumping stations. The valve is designed for media with suspended solids and is compatible with typical wastewater temperatures and pressure classes (consult manufacturer for specific ratings).

Applications

  • Pressurized sewage force mains
  • Industrial wastewater pipelines
  • High points in effluent networks
  • Horizontal lines with regular air release requirements
  • Systems where gas accumulation impacts hydraulic capacity

Selection Criteria

Sizing is based on operating pressure, connection diameter, expected air/gas volume, and hydraulic profile location. For vacuum protection, a dedicated air intake valve or a combination type is required. Sealing materials and body construction should be selected for chemical compatibility with the conveyed media.

Technical FAQ

Installation locations:
High points and at intervals along horizontal pipelines.

Operational benefits:
Reduces air accumulation, air pockets, pressure losses, and flow instability.

Use with potable water:
Not recommended as a primary choice. The 34WW is designed for sewage and industrial wastewater service.

Datasheet and documents

Description

The Cla-Val 34WW Series Water and Wastewater Air Release Valve is specially designed for sewage service. It will protect pipelines from entrained air or gases that collect at high points in sewage pipelines. This valve effectively eliminates air from a system by releasing small amounts of air before large air pockets can occur. In extreme cases, the continued accumulation of air without release valves can actually stop the flow completely. Increased power consumption and associated power costs can be anticipated if systems are not properly designed to release accumulated air.

34WW Series Air Release Valves are typically installed at high points in pipelines and at regular intervals of approximately 1/2 mile, along horizontal pipelines.