Earn Rewards on Every Order - Unlock Your Discounts Now!

00DAYS
00HRS
00MIN
00SEC
Next Working Day Delivery On In-Stock Spare Parts

Over 20,000 Orders Fulfilled

Darcy Alarm High Level Liquid Probe | PP/PROBE/HLQD-1-MCOVER

£95.00
Was £168.00 (inc VAT)
£114.00 (inc VAT)
£95.00 (exc VAT)
£140.00
2 IN STOCK — READY FOR DISPATCH
OUT OF STOCK
Restocking soon! PREORDER NOW
HURRY! BUY NOW

2 IN STOCK — READY FOR DISPATCH

Quantity

Secure Payment - Multiple Payment Gateways

Product Description

The High Level Liquid Probe is a reliable liquid level monitoring device designed to detect excessive liquid levels in a wide range of drainage and wastewater applications. Suitable for use in separators, storage tanks, washdown units, cesspools and wastewater treatment systems, this probe provides an early warning when liquid levels exceed the predetermined limit, helping to prevent overflows and operational problems. Utilising a simple and dependable float switch mechanism, the probe activates when the liquid reaches a specified level and sends an alarm signal directly to a compatible control panel. This allows operators to take immediate action before a high-level condition becomes a more serious issue. Although visually identical to a High Oil Probe, this sensor is specifically designed for high liquid level detection and should be used for liquid monitoring applications.


Key Features & Benefits

  • Designed for high liquid level monitoring
  • Suitable for tanks, separators, washdown units and cesspools
  • Simple and reliable float switch operation
  • Provides an alarm signal when liquid reaches a high level
  • Supplied with 5 metres of cable as standard
  • Can be retrofitted to most existing systems
  • Flexible strain relief cable gland for improved durability
  • Easy to install and maintain
  • Cost-effective liquid level monitoring solution

 

Typical Applications

  • Oil and grease separators
  • Wastewater treatment systems
  • Storage tanks
  • Pump chambers
  • Cesspools
  • Washdown and wash bay systems
  • Commercial and industrial drainage installations

 

Technical Benefits

  • Early warning of potential overflow conditions
  • Helps protect equipment and infrastructure
  • Supports preventative maintenance programmes
  • Reduces the risk of environmental incidents
  • Compatible with a wide range of alarm systems

 

How It Works

The probe is suspended at the required monitoring level within the tank or chamber. When the liquid rises and lifts the float switch, an alarm signal is sent to the control panel, providing a clear warning that the liquid level has exceeded the designated operating range. The High Level Liquid Probe provides a simple, dependable and cost-effective solution for monitoring liquid levels and protecting drainage and wastewater systems from overflow conditions.

 

Darcy Probe Guide

SKU: ELEALARDAR016

Why Buy Spare Parts from Direct Drainage?

Next-Day Delivery

Order in-stock spare parts before 3pm for next working day delivery.

Best Price Guarantee 

Found our product cheaper somewhere else? We will match it!

Stocked & Ready to Dispatch

A wide range of essential spare parts held in stock for fast, reliable dispatch.

Trusted Support

Not sure which replacement part you need? Call our team on 01388 537050.

You May Also Like

CUSTOMER REVIEWS

Rated 4.8/5 by Direct Drainage Customers

Based on over 600 verified reviews

VERIFIED REVIEW

Very helpful from the start to the finish

Items were despatched quickly and arrived the next day. Would recommend.

Title

North Hayne Farm Cottages | 26 June 2026

VERIFIED REVIEW

Cheapest price I could find for the pump

Cheapest price I could find for the pump and delivery the next day what more could you want.

Title

Sam Jukes | 5 November 2025

VERIFIED REVIEW

Great service!

I ordered a septic tank it was delivered within a week and the delivery driver left it in the exact right place and time. Would definitely use this company again, thanks so much.

Title

Eve Harland | December 2025

OFFICIAL SUPPLIERS OF:

FAQs

Everything you need to know about replacement spare parts, compatibility and next-day delivery.

What spare parts do you stock for sewage treatment systems?

Direct Drainage stocks a wide range of replacement parts and maintenance components for sewage treatment systems, air blowers, pumps and wastewater equipment.

 

Our range includes air blower diaphragms, filters, service kits, replacement fittings, electrical components and other essential spare parts.

 

We supply components for equipment from leading manufacturers, including Klargester, Secoh, Charles Austen, Hiblow and other established wastewater brands.

Product availability varies, so please check the individual listing or contact our team if you need assistance locating a specific component.

How do I find the correct replacement part for my equipment?

Finding the correct replacement part depends on the manufacturer, model and specifications of your existing equipment.

 

We recommend checking the model number, manufacturer part number or identification plate before purchasing.

 

For sewage treatment systems and air blowers, it's particularly important to confirm compatibility, as similar-looking components may not be interchangeable.

We have also added handy filters to help you find the exact part you need!

 

If you're unsure which part you need, contact our team on 01388 537050.

 

You can also email photographs of your existing component or equipment identification plate to sales@direct-drainage.co.uk, and we'll do our best to help identify a suitable replacement.

Are your replacement spare parts genuine manufacturer components?

Our range includes genuine manufacturer spare parts alongside selected compatible replacement components.

 

Genuine components are produced or supplied by the original equipment manufacturer, while compatible alternatives are designed for use with specified equipment.

 

The type of replacement part supplied will be identified in the individual product information wherever applicable.

 

Always check the product description, manufacturer and compatibility details before ordering.

 

If you specifically require a genuine manufacturer component, our team can help confirm availability.

How do I know if a spare part is in stock?

Stock availability is displayed on our product pages wherever this information is available.

 

Products held in our warehouse can usually be dispatched quickly, with next-working-day delivery options available on eligible orders.

 

Some specialist components may be ordered directly from the manufacturer and have longer delivery lead times.

 

If your replacement part is urgent, we recommend contacting our team before ordering to confirm current stock availability and dispatch arrangements.

How much is delivery?

Delivery costs vary depending on the type of product:

 

In-stock Spare Parts: £9.50 - shipped via DPD on a Tracked Next-Day service.
Supplier-shipped Spare Parts: £15 - dispatched directly from the supplier.

 

All delivery charges are calculated accurately at checkout.

What time do I need to order for next-day delivery?

We aim to dispatch in-stock spare parts on the same working day when orders are placed before 3pm, Monday to Friday, excluding public holidays.

 

Next-working-day delivery is available on eligible orders when the appropriate service is selected at checkout.

 

Orders placed after the cut-off time will normally be processed on the following working day.

 

Please note that dispatch and delivery times can occasionally be affected by stock availability, courier delays or other circumstances beyond our control.

Are your prices inclusive of VAT?

It is important to note that all prices listed on our website exclude VAT. VAT will be calculated at checkout. 

I've found the same item somewhere cheaper, can you match the price?

We always aim to offer competitive pricing. If you've found the same item cheaper elsewhere, let us know — we'll do everything we can to match or even beat the price.

 

Contact us directly on 01388 537050 or drop us an email at sales@direct-drainage.co.uk.