xl ironing board cover_iron board cover 110 x 33

A gate valve is designed to provide unobstructed flow through a pipeline when fully opened, making it suitable for high-flow applications. The gate, typically a rectangular or wedge-shaped disc, slides between two seats when the valve is opened or closed. The addition of a drain port to this design allows for the controlled release of any accumulated fluid within the valve or pipeline. This is particularly beneficial in systems where sediment or debris may settle over time.

2. Space Efficiency Unlike traditional barriers, retractable bollards do not obstruct pathways when retracted. This space-saving design is perfect for locations that prioritize pedestrian movement while allowing for necessary vehicle ingress at specific times.

Manhole patterns can be of any design but are usually restricted to concentric circle pattern, basket weave or waffle. Each manhole cover has two patterns, one for the top part which is decorative, and the other for the lower half which is usually flat or designed in a spider web pattern. Neenah Foundries has pattern shops that come out with 15 to 20 new patterns every day ranging from small changes made to existing patterns to new patterns as specified by customers. CNC machines are used to construct patterns made of wood, aluminum, plastic and metal. Metal patterns are very durable and strong making them useful for manufacturing manhole covers in large scale. To allow for shrinkage while cooling, the patterns are designed to be marginally larger than the intended size of the finished manhole cover.