BT-Maric Flow Control Valves maintain a fixed, pre-set, constant flow rate, regardless of pressure. BT-Maric Constant Flow Valves are engineered to provide precise, reliable flow rates, ensuring optimal performance in a variety of applications.
Start by identifying the desired flow rate for your application. It’s essential to choose a valve that can meet your required flow rate.
Our valves are available in 3 types of configurations:
1. Inserts from 0,15 to 233 L/min
2. Screwed type from 0,15 to 342 L/min
3. Wafer type from 0,15 L/min to 8 854 L/min
Choose the available nominal flow rates from the table 1 below.
Please note larger flow rates are possible with connection type wafer. (For wafers, please just indicate the flow rate that your application requires, and we will combine multiple control rubbers with the below flow rates to meet your requirements.)
Following nominal flow rates are available as standard, with type Precision control rubbers:
Control rubbers, together with the shape of their enclosure, control the flow rate.
Control rubber type Precision are supplied as standard unless otherwise specified.
The standard performance of the control rubber Precision is as below.
Performance graph for standard valves with control rubber type, Precision:
If the standard Precision control rubber is not suitable for your application, see below for the full range of control rubber types available.
Choose the correct control rubber based on your application parameters.
Parameters to be considered when selecting control rubbers for the valves:
Choose the right material for your application. Consider the type of fluid flowing through your system to ensure chemical compatibility.
Our valves are available in stainless steel, brass, and PVC as a standard.
OTHER non-standard materials are: POM, PVD-F, TITANIUM, DUPLEX, PE.
Choose the correct valve size based on your pipeline dimensions.
For example, if you’re working with a 1-inch pipe, select a valve that matches this size.
Our valves are available in sizes ranging from DN6 to DN300 or 1/8” to 16”.
Consider maximum flow rate per DN size.
All flow rates (specified in table1 far above) smaller than maximum flow, are available in the specific valve body size.
Choose the appropriate connection type for your system.
We offer 3 types of configurations:
Wafers are normally used to accommodate larger flow rates. Wafers are designed to be mounted between pipe flanges. Please specify DN and pressure class PN when ordering. As standard wafers are manufactured according to ISO 7005 PN10. Other standards as ANSI are optional.
Inserts are the smallest product in our range. They are fitted in your application´s existing pipe work, for example between/in threaded fittings. The smallest standard diameter is 12,45 mm. The insert can be made with a small flange and be equipped with an o-ring for better sealing. Please discuss a custom made solution with your local sales office.
Connections are available in sizes from DN6 up to DN50. Standard is female/female (FF). Please verify in the “nominal flow rates table” on previous page that your flow rate fits in the chosen valve body size. If you cannot find what you are looking for among our standard valves, please contact your local sales representative for a customized solution.
Standard threading is ISO 228 (BSP). NPT is also available.
When ordering our constant flow valves, it’s important to let us know both the quantity you need immediately and your anticipated annual usage.
1. Current Purchase Quantity: Please specify the number of valves you require for your current project or immediate needs.
Example: For a new installation or replacement, consider the exact number of valves needed to complete your system.
2. Yearly Purchase Quantity: To help us better serve you and manage our inventory and pricing, we also ask that you provide an estimate of the quantity you plan to purchase over the next 12 months.3. Wafer type from 0,15 L/min to 13 500 L/min
If you anticipate regular maintenance, expansion, or recurring projects, consider how many valves you may need annually.
By specifying both your immediate and annual needs, we can:
If you need assistance in estimating your yearly quantity, our team is here to help you assess your needs based on your specific application and project timelines.
Contact our experts for personalized support, or make a note
in the quotation form – and we will contact you!
Please refer to our catalogue for more detailed information. You may also contact our experts. They will be more than happy to help you with your challenge.
