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Webtec DHT401 Series Bi-directional Digital Hydraulic Testers

Hydraulic Equipment Supermarkets - Official Webtec Distributors. This is the Webtec simplified digital hydraulic tester with a single ON / OFF switch. The DHT401 measures flow, temperature and pressure in one robust unit. The DHT 1 Series Digital Hydraulic Testers accurately measure flow, pressure and temperature. The tester is designed to conveniently check the performance of hydraulic pumps, motors, valves and hydrostatic transmissions. This easy to use diagnostic tester has simplified controls and can pinpoint hydraulic system faults, reducing downtime and helping in preventive maintenance. The tester comprises a turbine flow block and a large easy to read digital display which indicates both flow and temperature. The tester has a built-in loading valve to simulate the working pressure during normal machine operation. The built-in safety discs protect the machine and operator in event of excessive pressure, allowing oil to safely bypass the loading valve INTERNALLY with no spillage of oil from the hydraulic circuit, eliminating clean-up costs and environmental hazards. 1" BSP Ports. For more information on the Webtec DHT401 or other models in the DHT series please contact HES on 01452 730774 or email enquiries@hydraulicequipment.net
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Ordering Description Price Quantity

Technical Overview

  • Flows up to 400 lpm (100 US gpm)
  • Pressures up to 420 bar (6000 psi)
  • Temperature up to 120°C (250°F)
  • Digital display for flow / temp, analogue pressure
  • Flow accuracy 1% of full scale
  • Easy to use

Bi-directional loading valve with INTERPASS(TM) burst disc protection fitted as standard.


  • FLOW 10-800 lpm, 2.5-210 US gpm
  • PRESSURE 480 bar, 7000 psi
  • ACCURATE measurement of flow, pressure and temperature
  • BUILT-IN loading valve
  • BI-DIRECTIONAL for unrestricted connection and simplified testing
  • INTERNAL oil by-pass protects the tester and system against overpressure
  • EASY to operate controls
  • LOW power consumption from standard battery. Automatic “Power Off” feature
  • PORTABLE AND LIGHTWEIGHT with angled case for easier viewing and cleaning.

Functional specification

  • Ambient temperature: 5 to 40°C (41-104°F)
  • Fluid type: Hydraulic oil
  • Accuracy: Flow: ± 1% full scale
  • Pressure: ± 1.6% full scale
  • Temperature: ± 1°C (± 2°F)
  • Dimensions in mm (inches) DHT401 240 (9.45”) wide, 200 (7.87”) deep, 200 (7.87”) high



Delivery Information and Returns Policy

Delivery Information :

Delivery charges apply.

If you require International Delivery charges will apply and you will need to contact enquiries@grouphes.com to process your order. 

Delivery will be Next Working Day wherever possible if the order is made before 4pm or 2pm for any order of oil.  Please allow up to 7 working days for any orders of 205 litre/45 gallons barrels of oil or 1000L IBCs. 


Returns policy:

You are entitled to cancel your order and return the product to any division of Group HES within 7 working days from delivery date.  After this date, it will be at the discretion of management to decide whether a refund or exchange will be given. A full refund is available if the item is unused, undamaged and in the original packaging. The item must not contain any fluids, including water, oil etc.

An average 20% (percentage may vary), handling charge will be applicable unless the part is faulty or incorrectly described. Any shipping costs will not be refunded.  

If you need to return an item, please contact admin@grouphes.com immediately with your order number and reason for return.

Please allow up to 30 days for refunds to be applied or alternatives to be resent out. The company reserves the right to assess whether there is any consumer error involved and will take this into account when refunds are granted.

Your statutory rights are not affected.

These terms are subject to change so do check back regularly. 

If you need to return an item due to warranty reasons - please refer to our Terms and Conditions and contact admin@grouphes.com or call 01452 730 774.