Heavy Duty Waterlock - Capacity: 10L
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Heavy Duty Waterlock - Capacity: 10L
Heavy Duty Waterlock - Capacity: 10L
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Heavy Duty Waterlock - Capacity: 10L
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Heavy duty waterlocks
The HD waterlocks are made of a special blended composite which is heat resistant up to 260°C, almost twice as much as standard GRP materials! The same applies for the thermal resistance to deformation under pressure. It is perfect for applications where the system is put to the test such as commercial or coastguard vessels.

The NLP waterlock design is already known for its extraordinary noise reduction features, versatile installation options and extremely low back pressure. By adding mechanical properties, this product can meet any challenge. The Heavy Duty Line is therefore unique in this market!

We offer two types of HD waterlocks; the NLPHD (4.5 - 10 litres) and the HPW (55 litres).


  • Suitable for Ø 50, 60, 75 and 90 mm internal hose diameters
  • 360° Rotating bodies and hose connections (infinite connection possibilities)
  • Available in black or white
  • Comes with floor and bulkhead mounting brackets

After ordering online, you will receive an automated email confirmation containing your order details. Your order will then be confirmed within a few minutes of placing your order.

It is our policy to ensure we deliver to our customers in a timely manner. In order to achieve this we use a range of freight companies depending on the size and weight of your order. In some instances we may use a number of carriers to get your products to you. For example, chain may come by road, some electronic equipment by air.

Most orders are shipped within 2 - 5 Days

Shipping rates

Orders delivered to Australian Post Codes under $499 attract an $18.00 shipping charge.

Orders of $499 or more ship free.*

For Remote areas and bulky items. If the cost to send is vastly different to our standard delivery costs, someone from our team will contact you prior to dispatch to arrange further payment or to issue a refund if you are not happy with the additional charges.

International orders will be charged at $0.00 initially and our staff will be in contact with a shipping quote. If the quote is not accepted the customer reserves the right to cancel their order and be refunded in full.

Should you have any queries or concerns about shipping, please don't hesitate to get in touch by clicking the support button on bottom right of the page.