# Check valve set, sera 29239, 2 pieces

**URL:** https://aio.lv/en/product--sera-29239--12075602
**Data updated:** 2026-03-12 21:54 (EET)
**Category:** Aquarium Supplies
**Manufacturer:** sera
**Manufacturer code:** 29239
**EAN:** 4001942088183
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 8.49 €
**Prices and availability valid until:** 2026-07-06 23:59
**Price without VAT (21%):** 7.02 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--sera-29239--12075602

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 29.06.2026 | free |
| Pickup points | 02.07.2026 | 1.99 EUR |
| Courier delivery to door | 02.07.2026 | 4.99 EUR |

## Summary description

Set of two check valves from sera (model 29239) designed to permit unidirectional flow and prevent backflow in aquarium and pond plumbing. Compact plastic fittings suitable for use with standard tubing and return lines; useful for securing filters, pumps and CO2 systems against siphoning. Simple inline installation for maintenance and safety.

## Long description

The sera check valve set (2 pieces) provides a compact solution to allow unidirectional flow and prevent backflow in aquarium and pond plumbing systems. Each valve is a plastic inline fitting designed to be installed directly into standard tubing and return lines. The set is intended for use where accidental siphoning or reverse flow could damage filters, pumps or CO2 systems; it enables safer maintenance and reduces the risk of water loss or equipment failure.
Advantages
These check valves offer a simple, space-saving design that fits common tubing sizes and installs inline without special tools. They work automatically, allowing flow in one direction while preventing backflow when the downstream pressure drops. The plastic construction is lightweight and resistant to typical water conditions found in aquariums and garden ponds, providing a cost-effective method of protecting pumps, filters and gas systems from siphon-related issues.
Suitable for
Inline return lines for aquarium filters and external canister filters
Pond pump return circuits to prevent backflow during power outages
CO2 supply lines and dosing systems to avoid reverse gas or liquid movement
Air pump and aeration lines where one-way flow is required
Key specifications
Quantity: 2 pieces per set
Material: durable plastic suitable for freshwater and pond use
Type: inline non-return (check) valve for tubing installations
Installation: inline insertion into flexible tubing or return lines
Operation: allows flow in one direction and prevents backflow automatically
How to use
Cut the tubing at the desired location and insert the check valve inline, ensuring correct orientation so that the arrow on the valve corresponds with the intended flow direction. Push the tubing fully onto each end of the valve to create a secure fit; use hose clamps if needed for larger or high-pressure lines. After installation, run the pump or system to verify uninterrupted forward flow and confirm that no reverse flow occurs when the downstream circuit is depressurized.
Usage recommendations
Regularly inspect the valve for debris or buildup that could impair sealing. Clean or replace valves if you notice reduced flow or intermittent backflow. For long-term reliability, avoid exposing the valve to strong solvents or prolonged direct sunlight; in systems with high pressures or unusual tubing sizes, select appropriately rated fittings or add hose clamps to ensure a secure connection.

## FAQ

### How much does the Check valves sera 29239 — set of 2 cost, and is it available for purchase?

The price is 8.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 10 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 29.06.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All sera products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized sera service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

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