Are these ball and spring?

That is not part of the description and no such assembly is visible. You would have to ask Pawfly.

What size hose are these made for?

Standard aquarium hose 3/16" ID hose will fit. Used it with PENN PLAX Standard Airline Tubing without any problems

What type of plastic is it made of

It's a hard clear good quality plastic. Successful at backflow prevention

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🐠 Keep your tank’s vibe fresh with flawless airflow!

COMPACT SPACE SMART DESIGN - Small footprint fits seamlessly into any tank setup without clutter.
RELIABLE ONE WAY VALVE FUNCTION - Prevents backflow, protecting your pump and maintaining optimal air pressure.
PREMIUM CLEAR PLASTIC DURABILITY - Robust, transparent design ensures long-lasting performance and easy inspection.
SECURE PACKAGING FOR SAFE DELIVERY - Arrives intact and ready to install, so you can dive into maintenance stress-free.
EFFORTLESS AQUARIUM AIRFLOW CONTROL - Guarantees smooth, hassle-free oxygen circulation for your aquatic friends.

The Pawfly 6 PCS Aquarium Air Pump Check Valves are precision-engineered clear plastic one-way valves designed to prevent backflow and ensure consistent oxygen delivery. Compact and durable, these valves fit standard aquarium tubing and come securely packaged for safe arrival, making them an essential upgrade for any serious fish tank enthusiast.

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Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

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Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Material	Plastic
Brand	Pawfly
Item dimensions L x W x H	5.4 x 2.1 x 2.1 Centimeters
Exterior Finish	Plastic
Inlet Connection Type	Barb
Number of Ports	2
Manufacturer	Pawfly, Pawfly
UPC	712383629098 712383629555
Manufacturer	Pawfly
Item model number	PF-Ap
Product Dimensions	5.4 x 2.1 x 2.1 cm; 10 g
ASIN	B01N92AXHF

Pawfly 6 PCS Aquarium Air Pump Check Valves Red Clear Plastic One Way Non-Return Check Valve for Fish Tank

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