Water Works Strainer Valves

Water Works Strainer Valves play an essential role in waterworks systems by filtering out debris, solids and contaminants that could damage pipelines, equipment and valves if left unchecked. They comprise a Y-shaped arrangement with a removable strainer basket or filter element that traps solid particles while allowing liquid to pass through.

Strainer Valves May Be Divided Into 5 Types

• Y Type Strainer – The most common type of strainer valve. They have a Y-shaped body with two inlets and one outlet. The strainer element is located between the inlets and outlet. Y-strainers are simple and economical.
• Basket Strainers – They contain a removable strainer basket that collects debris. The basket can be easily removed for cleaning or replacement. Basket strainers are reliable and cost-effective.
• Duplex strainers – Duplex strainers, which are another type of basket filter or strainer, are typically composed of iron, steel, or stainless steel and designed for permanent use.
• Automatic strainers – Self-cleaning baskets are a feature of automatic strainers, which are designed for permanent use. They are self-cleaning strainers that continuously back-flush solids from the strainer basket. Automatic strainers require compressed air for back-flushing but reduce maintenance requirements.
• Screen Strainers – Instead of a strainer basket, they use a perforated or woven metal screen as the filtering element. Screens can handle higher flow rates but are more difficult to clean.

Applications Of Oil & Gas Strainers

• Gas and oil strainers have a wide range of applications, with upstream and downstream being the most common.
• Upstream applications involve drilling for oil and utilize strainers in the derrick/mast, drawworks, top drive, mud/fuel tanks, power/pump stations, and shaker units.
• Downstream applications employ strainers for hydrocracking and filtration purposes.