The Imp water
valve box
locator / detector
Designed for, and with the co-operation of Severn Trent Water
Authority, one of the UK’s largest regional water companies.
Many other water authorities also use the Imp water valve box
detector / locator
It will accurately locate water valve boxes and manhole covers
faster than anything on the market. The Imp is deceptively simple
in operation and appearance. It is extremely popular with the
operators who use it on site.
Frequently used by those in the building trade
who require a simple rugged instrument for scanning areas of ground
before digging foundation. Can avoid very expensive damage to
buried services etc.
Saves time and money.
It has a built-in filter to ignore metallic litter (such as cigarette
cartons, metal foil etc.) without any loss of sensitivity or detection
range. Avoids the cost of digging and refilling unnecessary holes
due to false signals.
Can be used next to parked cars and
chain link fencing.
Strong directional search field is unaffected by nearby metal
objects. See illustration below.
Unaffected by moisture and temperature
changes.
No re-tuning required even when passing over wet grass, or from
sunlight to shadow.
Designed with the needs of the operator
in mind.
Lightweight and well balanced so that it can be held in one hand
without tiring.
Built to last.
Some of our customers have been using the same instruments for
over 15 years.
Low cost water valve box location /
detection equipment
If the cost of the instruments are taken over their life time
then they represents superb value for money.
Backed-up by full product support service
The Imp has a full one year parts and labour guarantee. |
Amazing time savings due to highly
directional field and litter filtering technology

Highly directional detection field
Unaffected by nearby interfering signals. Simple metal detectors
or water valve box detectors / locators simply cannot match this
instrument in action.
Unique false signal filtering technology
Eliminates time wasting false signals from cigarette packets and
similar metallic litter.
Deep detection range
Can detect inspection covers down to nearly 1 metre, even when
obscured by foil packets and similar items buried a few centimetres
down, above the cover. The Imp will ignore the litter but will
detect the inspection cover.
Equipment performance ranges and dimensions
| Approximate detection ranges |
Dimensions |
| Stop top box |
50cm(19") |
Overall length |
96cm(38") |
| Fire hydrant cover |
87cm(34") |
Search head diameter |
21cm (8") |
| Inspection cover |
95cm(37") |
Weight |
1.1kg (2 1/2lb) |
|