HYDROMINE™ LFC_1B Oil Hydraulic / Nitrogen Accumulator Acting Surge Relief Valves
OVERVIEW
A surge relief valve is designed to open when an over pressure situation occurs and thereby prevent excessively high pressures from putting people and equipment at risk. The HYDROMINE™ LFC_1B oil hydraulic / nitrogen accumulator acting surge relief valve has been developed to present a robust and simple solution to fluid handling issues in the mining and other industrial sectors.
The HYDROMINE™ LFC_1B surge relief valve is specifically engineered to operate effectively in dirty and muddy water conditions. It is designed for easy commissioning and setup in underground mines and remote locations with limited access to tools and equipment. The oil pressure can be easily set and adjusted using a portable hydraulic hand pump. The accumulator comes pre-charged from the factory, eliminating the need to bring a nitrogen cylinder to the site for charging. In case of any faults, a compact and portable spare accumulator can be purchased and easily replaced on site.
SIMPLICITY
The HYDROMINE™ LFC_1B oil hydraulic / nitrogen accumulator acting surge relief valve is designed to minimize wearing parts and in effect only has one moving part called the plug assembly. The plug assembly is a piston that is engineered to be balanced. The balanced plug assembly together with the oil pressure on top of the plug assembly and the and nitrogen pressure in the accumulator, are designed to use inline fluid pressure to create specific conditions in the system without the use of an external controller or pilot. A fixed opening force can be established by fixing the surface area ratio exposed to the upstream pressure and the oil pressure and nitrogen pressure combined. Upstream pressure (Pu) would act to open the valve. As the Pu increases, the opening force increases proportionally causing the oil to compress the nitrogen to force the plug assembly to move to an open position.. If Pu is reduced, the valve will close proportionally in an effort to maintain its hydraulic ratio and oil pressure / nitrogen force combined.
MATERIAL SPECIFICATIONS
DIMENSIONS
FLOW RATES
VALVE SIZING
Please consult with HYDROMINE™ for clarification of correct sizing for your requirements.
LOW MAINTENANCE REQUIREMENT
All the moving parts of HYDROMINE™ LFC_1B oil hydraulic / nitrogen accumulator acting surge relief valve are manufactured from stainless steel which increases reliability and durability. The HYDROMINE™ LFC_1B requires minimal maintenance, the majority of which, can be conducted with the valve remaining in situ.
DESIGN STANDARDS
The HYDROMINE™ LFC_1B oil hydraulic / nitrogen accumulator acting relief valve has been designed in accordance with various international standards as set out below:
ASME Boilers and pressure vessels design code
ANSI B16.10 API 598
ANSI B16.34 ANSI B16.37
ANSI Bl6.5 ANSI N278 .1
Available sizes: DN50 / 2" to DN400 / 16"
Face to face dimensions: ANSI B16.10
Pressure rating: up to 25MPa / 3 626 psi
Available end connections: ANSI B16.5, BS4504, BS10, AS/NZS 4331.1 (ISO 7005-1) DIN, All makes of grooved or ring joint couplings, HYDROMINE™ U-Coupling, HYDROMINE™ HMP-TE tapered couplings and other as per clients requirement.
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