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KOER

We can deliver KOER products on the same day! Most products are in stock, so you don't have to wait. Place your order from the comfort of your home and have it delivered to your address, to an AlzaBox, or to one of our stores. Why shop anywhere else but on Alza.cz?

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7 reasons to shop for KOER products on Alza.cz

We have a wide network of stores across the Czech Republic, where we follow all hygiene measures, as well as contactless AlzaBoxes (pick-up points).
You can see the availability of each item right away. Don't forget that we deliver on weekends too.
We accept most payment methods, including contactless and cryptocurrency.
You can easily return or exchange your product at any of our AlzaBoxes.
Need assistance? Our customer support is available 24/7.
We complement our range with accessories and additional services.
You'll find all the essential information for each product, and for some, user reviews to help with your selection.

What to consider when choosing KOER goods?

When making your selection, don't forget to consider a few aspects that will help you choose the right product. In the left menu, you can use the parametric filter to narrow down the offer to match your preferences. We also recommend sorting KOER products by popularity or price.

KOER brand names you'll find in our offering

KOER Radiator Valve KR.904 1/2" × 1/2" - Corner Valve

KOER Radiator Valve KR.904 1/2" × 1/2"

In stock > 10 pcs at the supplier's

Added to cart

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KOER Ball Valve with Compression Fitting, Butterfly Handle, Red, KR.353 Diameter 16 × 16 - Irrigation Valve

KOER Ball Valve with Compression Fitting, Butterfly Handle, Red, KR.353 Diameter 16 × 16

In stock > 10 pcs at the supplier's

Irrigation Valve - ball valve, compression fitting, nickel-plated brass, up to 20 bar

Added to cart

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KOER Angle Valve KR.510 A 1/2"× 3/8" - Corner Valve

KOER Angle Valve KR.510 A 1/2"× 3/8"

In stock > 10 pcs at the supplier's

Added to cart

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KOER Angle Valve KR.510 1/2" × 1/2" - Corner Valve

KOER Angle Valve KR.510 1/2" × 1/2"

In stock > 10 pcs at the supplier's

3 sizes

Added to cart

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KOER Flush Kit: Drain Valve + Inlet Valve KT-0302-3/8" - Valve

KOER Flush Kit: Drain Valve + Inlet Valve KT-0302-3/8"

In stock > 10 pcs at the supplier's

Valve - toilet cistern flush kit, dual-flush outlet valve + fill valve, bottom water inlet; plastic 3/8" thread, mechanical control

Added to cart

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KOER Valve, KR.521 3/4″ × 3/4″ × 3/4″ - Corner Valve

KOER Valve, KR.521 3/4″ × 3/4″ × 3/4″

In stock > 10 pcs at the supplier's

Added to cart

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KOER Filling Valve with Universal Connection and Brass Thread KT-0101-3/8" - Valve

KOER Filling Valve with Universal Connection and Brass Thread KT-0101-3/8"

In stock > 10 pcs at the supplier's

Valve - fill valve for toilet cistern, universal connection – bottom and side inlet, 3/8" brass thread

Added to cart

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KOER Garden Tap with Quick-Connect Adaptor, KR.259 1/2" - Irrigation Valve

KOER Garden Tap with Quick-Connect Adaptor, KR.259 1/2"

In stock > 10 pcs at the supplier's

Irrigation Valve - external thread, nickel-plated brass, ball valve, up to 12 bar

Added to cart

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KOER Lockable Garden Ball Valve, KR.249 1/2" - Irrigation Valve

KOER Lockable Garden Ball Valve, KR.249 1/2"

In stock > 10 pcs at the supplier's

Irrigation Valve - external thread, nickel-plated brass, ball valve, up to 20 bar

Added to cart

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KOER KR.510 Angle Valve 1/2"×3/4" - Corner Valve

KOER KR.510 Angle Valve 1/2"×3/4"

In stock > 10 pcs at the supplier's

3 sizes

Added to cart

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KOER Bottom Inlet Fill Valve with Brass Thread KT-0103-3/8" - Valve

KOER Bottom Inlet Fill Valve with Brass Thread KT-0103-3/8"

In stock > 10 pcs at the supplier's

Valve - toilet cistern fill valve, bottom water inlet, brass 3/8" thread, flow pressure 0.2–16 bar, adjustable height 8"–13"

Added to cart

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KOER Garden Ball Valve, KR.251 3/4" - Irrigation Valve

KOER Garden Ball Valve, KR.251 3/4"

In stock > 10 pcs at the supplier's

Irrigation Valve - male thread, nickel-plated brass, ball valve, up to 20 bar

Added to cart

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KOER Radiator Valve, Angled, KR.901 1/2" × 1/2" - Corner Valve

KOER Radiator Valve, Angled, KR.901 1/2" × 1/2"

In stock > 10 pcs at the supplier's

2 sizes

Added to cart

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KOER Garden Ball Valve, KR.251 1/2" - Irrigation Valve

KOER Garden Ball Valve, KR.251 1/2"

In stock > 10 pcs at the supplier's

Irrigation Valve - male thread, nickel-plated brass, ball valve, up to 20 bar

Added to cart

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KOER Radiator Valve KR.903 1/2" × 1/2" - Corner Valve

KOER Radiator Valve KR.903 1/2" × 1/2"

In stock > 10 pcs at the supplier's

Added to cart

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KOER Ball Valve Butterfly, Angle, Red, KR.208 1/2" FM - Valve

KOER Ball Valve Butterfly, Angle, Red, KR.208 1/2" FM

In stock > 10 pcs at the supplier's

Valve - ball valve, compression fitting, nickel-plated brass, up to 20 bar, angle

Added to cart

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KOER Ball Valve, Angle, KR.511 1/2" × 1/2" - Valve

KOER Ball Valve, Angle, KR.511 1/2" × 1/2"

In stock > 10 pcs at the supplier's

2 sizes

Valve - angle ball valve; connection 1/2" × 1/2", chrome-plated brass CW617N, flow rate 1.3 m³/h, operating pressure up to 12 bar, dimensions 75.5 × 28.5 × 25mm

Added to cart

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KOER Angle Ball Valve, KR.511 1/2" × 3/4" - Valve

KOER Angle Ball Valve, KR.511 1/2" × 3/4"

In stock > 10 pcs at the supplier's

2 sizes

Valve - angle ball valve; connection 1/2" × 3/4", chrome-plated brass CW617N, flow rate 1.3 m³/hr, operating pressure up to 12 bar, dimensions 69 × 28.5 × 26mm

Added to cart

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KOER KR.171 1" Check Valve - Check Valve

KOER KR.171 1" Check Valve

In stock > 10 pcs at the supplier's

3 sizes

Check Valve - spring-loaded, with double-sided 1" internal thread, CW617N brass with chrome, operating pressure up to 40 bar, medium temperature from −20 to +90°C

Added to cart

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KOER Ball Valve with Compression Fitting, Butterfly Handle, Red, KR.351 Diameter 16 × 1/2" M - Irrigation Valve

KOER Ball Valve with Compression Fitting, Butterfly Handle, Red, KR.351 Diameter 16 × 1/2" M

In stock > 10 pcs at the supplier's

Irrigation Valve - ball valve, compression fitting, nickel-plated brass, up to 20 bar, male thread

Added to cart

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KOER Ball Valve with Compression Fitting, Butterfly Handle, Red, KR.352 Diameter 16 × 1/2" F - Irrigation Valve

KOER Ball Valve with Compression Fitting, Butterfly Handle, Red, KR.352 Diameter 16 × 1/2" F

In stock > 10 pcs at the supplier's

Irrigation Valve - ball valve, compression fitting, nickel-plated brass, up to 20 bar, female thread

Added to cart

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KOER KR.171 Check Valve 1/2" - Check Valve

KOER KR.171 Check Valve 1/2"

In stock > 10 pcs at the supplier's

3 sizes

Check Valve - spring-loaded, with double-sided 1/2" internal thread, chrome-plated CW617N brass, operating pressure up to 40 bar, medium −20 to +90°C

Added to cart

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KOER Radiator Valve, Corner, KR.902 1/2" × 1/2" - Corner Valve

KOER Radiator Valve, Corner, KR.902 1/2" × 1/2"

In stock > 10 pcs at the supplier's

2 sizes

Added to cart

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KOER KR.171 Non-Return Valve 3/4" - Check Valve

KOER KR.171 Non-Return Valve 3/4"

In stock > 10 pcs at the supplier's

3 sizes

Check Valve - spring-loaded, with 3/4" internal thread on both sides, chrome-plated CW617N brass, operating pressure up to 40 bar, medium −20 to +90°C

Added to cart

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