About Diesee
Over the years Diesse Fluid Control, after an entrepreneurial process started in the 1950 years and based on proven technical competence, DIESSE has successfully developed its know-how in the fluids measuring instruments sector and has registered own patents. Today the company is one of the most well-known level gauge manufacturers in the business and offers a high service performance ensuring high product quality and flexibility, unique and reliable delivery terms, customer care through research of innovative and personalized/tailor made solutions.
Diesse level gauges are manufactured with selected Italian/ European-only components and certified in accordance
with major international standards and are exported worldwide through fidelized Distributors and Customers.
Diesse Fluid Control Overview
Today, the company is one of the most well-known level gauge manufacturers in the business. know-how, quality diesse fluid control :
- Wide skills base and teamwork to achieve business objectives.
- High product quality thanks to a careful selection of Italian and European-only materials and through supplier assessment/qualification process.
- Customer care customer special projects development, immediate response to any request, extreme flexibility in terms of production processes and deadlines, assistance in identifying the most suitable technical solution.
Diesse Fluid Control Products
The products are suitable for most industrial process applications and general boiler applications as well, The Diesse products range covers:
Glass Level Gauges

Glass level gauges give very accurate level readings, making them the ideal product for calibrating other instruments as well.
READING TYPE
The required visible length depends on the type of fluid and the shape of the tank. The visible length with a single glass varies from 95 mm to 320 mm. If the required visible length exceeds these measurements, additional glasses of
the same length are joined together and mounted on a single bar.
To ensure continuous reading along a housing consisting of numerous glasses, one or more housings can be placed on the side at the points where the reading is interrupted.
REFLEX level gauges
The level is ascertained using a glass which has a smooth side and a wetted prismatic side. The level of the fluid inside the level gauge is shown by using the optical principles of refraction: the wetted part fully absorbs light and so the fluid appears to be black. The part in contact with the gas, on the other hand, fully reflects light and so the gas appears to be of a very light colour.

The product line includes level gauges suitable for pressure ratings from PN10 to PN250 and a huge number of industrial process applications
This type of gauge is recommended: for taking clear and simple readings (see counter-indications below) if you are looking for an inexpensive gauge which will also save you money on maintenance costs
The product is NOT suitable for use in the following instances:
- if exposed to corrosive fluid (e.g. caustic soda, hydrofluoric acid, citric acid …)
- if exposed to high pressure steam
- if subjected to repeated thermal shocks
- In the scenarios listed above, the glass must be protected with MICA or PCTFE shields, so a transparent level gauge is necessary
- for checking the level of separation between two immiscible fluids (interface)
- for checking the colour of a fluid (all fluids look very dark)
- in cases where the fluid is particularly viscous (a film may form on the glass which prevents you from taking an accurate reading)
- in cases where the fluid is particularly dark (the reflex principle is rendered ineffective)
TRASPARENT level gauges
In this kind of level gauge, the fluid is held between two smooth glasses. The level can be identified as the fluid has a different level of transparency compared to gases and steam. The transparent level gauge is particularly recommended for applications where the glass needs to be protected from corrosive fluids and high temperatures. A lamp can also be fitted behind the gauge to improve visibility in special operating conditions.

The product line includes level gauges suitable for pressure ratings from PN10 to PN250 and a huge number of industrial process applications.
This type of gauge is recommended:
- for use with corrosive fluids (protective shield for the glass is required)
- for steam with an operating pressure > 20 bar (protective shield for the glass is required)
- if repeated thermal shocks are likely (protective shield for the glass is required)
- for checking the interface (level of separation between two immiscible fluids)
- for checking the colour of a fluid
- for dirty / oily fluids
- Operating limits / Conditions:
- Process:
- Max. pressure: 255,5 bar @ 38°C (rating class 1500)
- Max. temperature: 300°C (max. temperature allowed by borosilicate glasses as per the DIN 7081
- Max. pressure: 70 bar
- Max. temperature: 280°C
Weld-on level gauges
This type of level gauge is designed to be welded on to the tank and withstand the pressure inside it. It is made from both carbon steel and stainless steel and can take reflex and transparent glasses. Reflex glasses are recommended as they improve visibility. In order to prevent warping or distortions while the level gauge is in service, the technician tasked with installing the product must reinforce the wall of the tank where the gauge is to be welded on.

For visible lengths exceeding 320 mm, we recommend welding additional gauges on different axes to avoid weakening the tank structure. During welding operations (which must only be carried out prior to gauge assembly), special care must be taken to avoid exposing the weld-on base to high temperatures for long periods of time as this may comprise the resistance of the gauge when in operation.
Operating limits / Conditions:
- Max. pressure: rating class 300 (A105: 51 bar; AISI 316L : 49,6 bar) @ 38°C
- Max. temperature: 300°C (max. temperature allowed by borosilicate glasses as per the DIN 7081 standard – see page 1.69)
- On request: rating class 600 (A105: 102 bar; AISI 316L : 99,3 bar) @ 38°C
Magnetic Level Gauges
A by-pass (which mainly consists of a tube longer than the fluid range) is connected to the tank containing the fluid whose level is to be measured. A float containing a magnet moves up and down the tube, and its position determines the tank fluid level (the level is clearly indicated by red and white markers).

Variation in fluid level causes the float to move and the float magnet then makes the roller display (which also contains a magnet) rotate. Red markers are normally shown in the part of the tank holding the fluid and white markers in the part containing the gas/steam.
NOTE: Magnetic level gauges are built exclusively according to the centre-to-centre distance specified by the customer. The reading length usually matches the centre-to-centre distance.
Cylindrical Plug Cocks
The DIESSE cylindrical plug cock is suitable for all kinds of applications in a number of different sectors. The seal is soft and is achieved by fitting a case between the vessel and the plug cock.

The DIESSE manometer setting valve is a three way cylindrical plug cock with control flange (DS PM18) is soft sealing and the ideal product for securely fitting a manometer.
The cock has a flanged connection for this purpose, which must be screwed in so that no loss occurs as a result of incorrect operation (when a control manometer is not connected).
Read More : Tube Spring Manometer RC 63/100/160 Hengesbach
Blow Down Valves
DIESSE blow down valves must be installed downstream of a shut-off globe valve suitable for the intended use of the system.

The main function of these valves is to drain mud in hydraulic circuits. The seal is metal and, thanks to the tempered disc and stellited seat, the valve can be used with high temperature steam.
Read More :Process Level Gauges TC Fluid Control
Types:
- Blow Down Valve With Lever
- Blow Down Valve With Pneumatic Actuator
Needle Valves
The needle valves allow the interception and regulation of various fluids and gases that are compatible even aggressive. The closing element in the form of a nail or pin is positioned in a conical seat that contains it entirely.

Diesse Needle Valve products range:
- Needle Valve Class 3000 psi (Light type)
- Needle Valve Class 3000 psi (Heavy type)
- Manometer Setting Needle Valve Class 3000 psi
Source : diessefluidcontrol.com
You must be logged in to post a comment.