OVERVIEW

A pressure control valve is designed to maintain a desired downstream pressure irrespective of the flow requirement. The LFC™_3B pressure control valve is fitted with a modulating intelligent electrical actuator. Any make of electrical actuator can be fitted to the pressure control valve. The LFC™_3B pressure control valve has been developed to present a robust, simple and cost effective low pressure (up to 2.5 MPa / 363 Psi) solution to fluid handling issues in any industrial sector.

SIMPLICITY

The LFC™_3B pressure control valve is designed to offer increased efficiency and accuracy as well as improve on ease of maintenance and in effect only has one moving part called the plug. The plug is a piston that is engineered to be balanced. The balanced plug enables easy opening and closing at any pressure and differential condition. The differential pressures do not affect the operating torque which results in a relatively flat torque curve allowing for the fitment of smaller actuators.

FEATURES

- Reduced cavitation
- Low noise levels
- Low vibration
- One moving part
- Long lasting 

MATERIALS OF CONSTRUCTION & DIMENSIONS

LOW MAINTENANCE REQUIREMENT

All the moving parts of LFC™_3B pressure control valve are manufactured from stainless steel which increases reliability and durability. The LFC™_3B requires minimal maintenance, the majority of which, can be conducted with the valve remaining in situ.

FLOW RATES

VALVE SIZING

Please consult with Hydromine for clarification of correct sizing for your requirements.

PLUG ASSEMBLY, V-PORT AND DEALING WITH CAVITATION

As displayed, the LFC™_3B pressure control valve plug assembly and movements.

Closed Position: Shows the plug assembly on the body seat in a fully closed valve position.

5% Open Position: Shows the plug assemble in a 5% open position. It can clearly be seen that only the top of the V-Port opens up and creates a flow path. This reduces cavitation and helps with fine control at low flow conditions.

12% Open Position: Shows the plug assembly in the 12% open position. Now it can be observed how the V-Port moved away from the seat and the openings are increasing proportionally. At this point the top of the V-Ports are now being exposed to the flow path.

30% Open Position: Shows the plug assembly in the 30% opened position. Now it can clearly be seen that the full V-Port is creating a larger orifice in the flow path. Up to this point, cavitation needs to be dealt with to increase the life expectancy of the valve. The V-port trim ensures that the seating elements are further apart from each other during low flow allowing the cavitation to take place on noncritical components of the valve.

40% Open Position: Shows the plug assembly in the 40% open position. Now it can clearly be seen that the V-Port is completely away from the seat and the flow path is now relatively large. At this point the flow is approaching its medium demand flow rate and the V-Port has little to no function. 

ROBUST, RELIABLE AND EFFICIENT

Due to the minimal number of moving parts to effect the fluid control, the number of potential failures are minimized.

DESIGN AND MANUFACTURING STANDARDS

The LFC™_3B pressure control valve has been designed in accordance with various international standards as set out below:

ASME Boilers and pressure vessels design code
ANSI B16.10 ANSI B16.3
ANSI B16.34 ANSI B16.37
ANSI B16.5 ANSI N278.1

Available sizes: DN50 / 2" to DN400 / 16"
Face to face dimensions to ANSI Bl6.10
Pressure rating: up to 2.5 MPa / 363Psi

Available end connections: ANSI Bl6.5, BS4504, BS10, AS/NZS 4331.1 (ISO 7005-1) DIN, All makes of grooved or ring joint couplings and other as per client’s requirement.