500 Pcs Plastic Inline Spring Check Valve Pipe Fittings

500-Piece Plastic Inline Spring Check Valve Set

Keep your fluid systems flowing in the right direction with this comprehensive 500-piece set of plastic inline spring check valves. Designed as inner plug spool-style check valves, these fittings prevent backflow and maintain consistent one-way fluid flow in pipes, tubing, and inline systems. Whether you're working on irrigation, aquariums, pneumatic lines, or DIY plumbing projects, this bulk pack ensures you always have the right fitting on hand.

Made in Mainland China.

Key Features

• Bulk Value Pack: 500 pieces per order — perfect for professional contractors, hobbyists, and maintenance teams who need reliable stock on hand.
• Plastic Construction: Lightweight, corrosion-resistant plastic material suited for water, air, and low-pressure fluid applications.
• Inline Spring Mechanism: Internal spring-loaded spool design ensures consistent one-way flow and prevents reverse flow or siphoning.
• Inner Plug Design: Easy-to-insert inner plug style fits securely into standard pipe and tubing fittings for a leak-resistant seal.
• Wide Application: Ideal for irrigation lines, aquarium air pumps, drip systems, pneumatic circuits, beverage dispensing, and more.
• Easy Installation: No tools required — simply press or push into the fitting for a quick and secure connection.

Specifications

Common Applications

• Garden drip irrigation and watering systems
• Aquarium and fish tank air pump lines
• Pneumatic and compressed air circuits
• Beverage dispensing and food-grade fluid systems
• DIY plumbing and household pipe maintenance
• Industrial inline flow control

Related Products You May Like

• 10Pcs Broom Handle Grip Sleeve – Nonslip Plastic Replacement End Cap
• 100pcs Rubber Pourer Cap – Bottle Pour Spout Dust Covers
• 10pcs Durable Gold Blade Nut – Universal Trimmer Replacement Parts

Learn more: OSHA on eye and face protection

Frequently Asked Questions

Q: What is a plastic inline spring check valve used for?

A: A plastic inline spring check valve is a one-way flow control fitting used in pipes and tubing to allow fluid or air to pass in one direction while automatically blocking reverse flow. They are commonly used in irrigation systems, aquarium air lines, pneumatic circuits, and beverage dispensing equipment.

Q: Are these check valves compatible with standard pipe and tubing sizes?

A: These inner plug spool-style check valves are designed to fit into standard pipe and tubing fittings. Please check the specific inner diameter of your tubing or pipe before ordering to ensure a proper fit. The plastic construction makes them suitable for low-to-medium pressure water and air applications.

Q: How do I install an inner plug check valve?

A: Installation is straightforward — no special tools are required. Simply align the check valve with your pipe or tubing fitting and press it firmly into place. The spring-loaded spool mechanism activates automatically, allowing one-way flow while blocking backflow whenever pressure drops or reverses.

Q: How many pieces are included in this set?

A: This set includes 500 individual plastic inline spring check valve fittings, making it an excellent bulk supply for professionals, contractors, and enthusiasts who need a large quantity for ongoing projects or inventory.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.