LK 521 MultiFill® is a combination valve for easy filling of refrigerant fluid into ground source heat systems. The valve has a filter to protect the evaporator against possible grit. Its compact construction allows it to be installed in tight spaces. The valve comes with insulation to protect against condensation and possible icing. LK 521 MultiFill® can also be used in other applications where filling and filtration are required.
Arrows on the valve body indicate the direction of the flow. The enclosed insulation should be used.
test text Installation
Apart from cleaning the filter, no maintenance is required. The filter should be cleaned immediately after installation, a month later and then every other year or when refilling fluid to the system. Check the installation regularly.
LK 521 MultiFill® 25 for heat pumps, max. 12 kW LK 521 MultiFill® 32 for heat pumps, max. 30 kW LK 521 MultiFill® 50 for heat pumps, max. 50 kW
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Refund Policy
We want you to be completely satisfied with your purchase. If for any reason you’re not, we offer a 30-day return policy — you have 30 days from the date you receive your item to request a return.
Eligibility for Returns
To qualify for a return:
Your item must be in the same condition as when you received it — unused, undamaged, and in its original packaging.
You must provide a receipt or proof of purchase.
How to Start a Return
To begin the return process, please contact us at shop@renewableproductswarehouse.com. Once your return request is approved, we’ll send you a return shipping label along with detailed instructions on how and where to send your package.
Please note: Items sent back without prior approval will not be accepted.
Returns should be sent to: Renewable Products Warehouse 24 McDowall Street Paisley, PA3 2NB
Please inspect your order as soon as it arrives. If your item is defective, damaged, or incorrect, contact us immediately so we can assess the issue and make it right. All damages must be reported within 24 hours of receiving your order.
Exceptions / Non-Returnable Items
Certain items cannot be returned, including:
Tailored or made-to-order products
Custom fixing systems
Refunds
Once we receive and inspect your returned item, we’ll notify you whether your refund has been approved. If approved, your refund will be processed to your original payment method within 10 business days.
Please note, it may take additional time for your bank or credit card company to post the refund. If more than 15 business days have passed since your return was approved, please contact us at shop@renewableproductswarehouse.com.
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