The pvc spools are divided into equal diameter and different diameters. The ends of the pipes of the equal diameter spools are all the same size; the size of the main pipe of the reduced spool is the same, and the size of the pipe of the branch pipe is smaller than that of the main pipe. A spool is a pipe fitting used at the branch of a pipeline.

PVC straight cross pipe fittings are essential components used in plumbing systems to facilitate the intersection of four PVC pipes at right angles, forming a cross-shaped configuration. Here are key features and details about PVC straight cross pipe fittings:

1. Material: These fittings are typically made from PVC (Polyvinyl Chloride), a durable and corrosion-resistant thermoplastic widely used in plumbing for its versatility and cost-effectiveness.

2. Design: The straight cross design features four openings, creating a cross-shaped intersection for connecting four PVC pipes at right angles. This configuration allows for the branching of the pipeline in both horizontal and vertical directions.

3. Socket Ends: PVC straight cross fittings generally have socket ends, allowing for the insertion of PVC pipes into each opening. The joints are secured using PVC solvent cement or adhesive, ensuring a reliable and watertight connection.

4. Application: Straight cross fittings are used in various plumbing applications where the pipeline needs to branch in multiple directions. They find utility in residential, commercial, and industrial settings for creating complex piping systems.

5. Corrosion Resistance: PVC is inherently resistant to corrosion and chemical degradation, making it suitable for drain, waste, and vent applications where exposure to moisture and various substances is common.

6. Smooth Interior: The interior of PVC straight cross fittings is typically smooth, promoting efficient water flow and minimizing the risk of clogs or debris buildup.

7. Versatility: These fittings are versatile and can be used in conjunction with other PVC components, such as pipes, elbows, and couplings, to create comprehensive plumbing systems.

8. Codes and Standards: Adherence to local plumbing codes and standards is crucial when using PVC straight cross pipe fittings to ensure proper installation and compliance with regulations.

PVC straight cross pipe fittings play a crucial role in creating intricate plumbing configurations, allowing for the efficient and reliable conveyance of fluids in various construction and plumbing applications.