All products presented on this website are subjected to extensive checks from our team of engineers and mechanics. Althought,we can not offer a full guarantee for any of our products, as they are used parts from third parties. The limited liability guarantee that comes with these products is extensively analysed here. Please contact our Support Lineif you have any questions about our products guarantee.
ℹ️ Additional Information
| Condition |
USED/GOOD WORKING CONDITION |
|---|---|
| Manufacturer |
BOLL & KIRCH |
| Product Code |
100.104.00056 |
📦 Guarantee Terms
🗂️ Product Files
🖹 Description
The differential pressure indicators 4.36 from BOLL & KIRCH provides you with robust, compact devices which display the contamination state of the filter insert.
These can be mounted on every BOLLFILTER and they display on the coloured segmented disk when filter cleaning is required.
The differential pressure indicator for every application. We will offer you the appropriate version, e.g. the differential pressure indicator with an electronic contact mechanism. Two switches are available here which can be used independently of each other as switch or alarm contacts. At 75% and at 100% of the set differential pressure limit value, the contacts of the two reed switches are operated magnetically.
The housing of the differential pressure indicator is made from coated aluminium pressure casting and is suitable for a maximum operating pressure of 100 bar.
On type 4.46 the internal parts are designed from Cr-Ni steel. The housing enables an operating pressure of up to 160 bar.
The mechanical differential pressure gauge model 4.36.2 by Boll & Kirch is a critical monitoring instrument used in industrial systems to measure pressure differences across components such as filters and pipelines. Unlike standard pressure gauges that display absolute pressure, this device focuses on the pressure drop between two points, providing valuable insight into system performance and condition.
What It Is
A differential pressure gauge is designed to measure the difference in pressure between two connected points in a system. This allows operators to determine how much resistance or restriction is occurring within a component, such as a filter, strainer, or heat exchanger.
What It Does
Instead of simply showing pressure, the 4.36.2 gauge answers an important operational question:
👉 “How much pressure drop is occurring across a component?”
This makes it an essential diagnostic tool for identifying inefficiencies and potential issues within fluid systems.
Design and Components
The device features a robust and practical design suitable for industrial environments:
- Two connection ports:
- One connected upstream (before the component)
- One connected downstream (after the component)
- Front dial indicator:
- Displays pressure difference visually
- Often includes a color-coded scale (green → yellow → red) for quick status assessment
How It Works
The operation is simple and reliable:
- Pressure enters both sides of the gauge
- An internal mechanism compares the two values
- The difference moves the indicator needle
This real-time measurement provides continuous monitoring of system conditions.
Typical Applications
Differential pressure gauges are most commonly used in:
- Filtration systems (filters and strainers)
- Heat exchangers
- Water, oil, and steam systems
- Industrial process and automation environments
Why It’s Important
One of the main uses of this gauge is monitoring filter condition:
- Clean filter → low pressure difference
- Dirty or clogged filter → high pressure difference
Example Scenario
- Before filter: 6 bar
- After filter: 5.5 bar
Differential = 0.5 bar (normal operation)
Later:
- Before: 6 bar
- After: 3 bar
Differential = 3 bar (filter clogged – maintenance required)
Advantages
- Early detection of clogging or blockages
- Protection of equipment from damage
- Reduced downtime and maintenance costs
- Simple, reliable operation without electronics
In Simple Terms
Think of the Boll & Kirch 4.36.2 as a “filter health indicator”, giving you instant feedback on when maintenance is needed.
Role in a System
In a complete industrial setup:
- Actuators and valves → control flow and motion
- Regulators and converters → manage pressure and signals
- Differential pressure gauge (this device) → monitors system condition and performance
Overall, this gauge is an essential tool for ensuring efficiency, safety, and reliability in any fluid handling or industrial process system.
