Valves for irrigation systems and irrigation pump stations

The medium

Canal and river water carries suspended solids, sand and plant debris. Abrasives wear seals quickly and debris prevents tight closure, so full bore, no dead zones and the ability to flush matter.

Lift irrigation pump stations

Large stations use big gate valves and butterfly valves, check valves on discharge lines and surge protection. For gate valves on silty water a resilient wedge or hardened seat pair is preferred; for butterfly valves, a wear-resistant liner.

Seasonal operation and lay-up

The off-season is the main enemy of valves: stagnant water, corrosion and seized stems. Before shutdown drain the system, cycle the valves and grease the stems; before start-up check travel and packing.

Drip and sprinkler irrigation

Drip distribution networks use small ball and butterfly valves, filters and pressure regulators. The main from the pump to the fields is fitted with gate valves and air valves like any water main.

Supply from Tashkent

TAZ supplies gate valves and butterfly valves to water authorities, farms and contractors across Uzbekistan and neighbouring countries. Send the station layout and sizes and we will put the package together.

Checklist

• DN and pressure
• water quality and silt
• station type
• check and air valves
• seasonal regime
• actuators

Primary references

• AWWA standards for water valves
• European and British standards catalogue, BSI