Technical Information
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API PLAN 23
Description
Circulation of pumped fluids from the discharge to the seal flush connection, passing through a flow rate controller and a heat exchanger.
Objetive
To control the fluid temperature in the seal chamber. This prevents the vaporisation of the fluid between the seal faces.
Aplications
Horizontal or vertical pumps.
Clean fluids at high temperatures. Hot water, boiler food products. Hot oils.
API PLAN 31
Description
Circulation of the pumped fluid from the pump discharge to the seal chamber, passing through a cyclone. Fluids with solids are returned to the suction area.
Objetive
To prevent the abrasion of the mechanical seal by particles.
Aplications
Horizontal or vertical pumps.
Fluids with suspended solids whose specific gravity is twice that of the fluid. In vertical pumps, a shaft bushing must be included at the base of the compartment.
API PLAN 51
Description
Static column of non pressurised fluid inside a tank, through the quench connection.
Objetive
To prevent potential leaks from being emitted into the atmosphere.
Aplications
Horizontal or vertical pumps.
Fluids that crystallise when in contact with the atmosphere.
Dangerous fluids with low concentrations.
PLAN API 52
Description
Forced circulation of an external non-pressurised fluid used as a barrier fluid.
This fluid is circulated through a pumping ring due to the thermo-siphon effect.
Objetive
To prevent atmospheric contamination in the event of leaks, using the external seal (atmospheric side) as a safety seal. Zero or very low emissions.
Aplications
Horizontal or vertical pumps.
Non-pressurised, double seal layout (tandem). Fluids that crystallise or vaporise when in contact with the atmosphere. Dangerous fluids with low concentrations, explosive or flammable fluids.
API PLAN 53A
Description
Forced circulation through a pumping ring of a barrier fluid in a pressurised tank with a pressure that is 2 bar higher than the product fluid.
Objetive
To prevent atmospheric contamination in the event of leaks, using the external seal (atmospheric side) as a safety seal. Zero or very low emissions.
Aplications
Horizontal or vertical pumps.
Fluids that crystallise or vaporise when in contact with the atmosphere. Dangerous fluids with high concentrations, explosive or flammable fluids.
API PLAN 62
Description
Injection of an external fluid to be used for quenching and flushing/washing. The quench lubricates the seal contact surfaces on the air side, with vapour or water. The flushing/washing operation has a lubricating function.
Objetive
To guarantee seal lubrication, reducing the formation of particles between the contact surfaces due to carbonisation, oxidation or crystallisation.
Aplications
Horizontal or vertical pumps.
Single seal layout. Fluids that crystallise when in contact with the atmosphere or generate solid deposit that block or stick to the seal faces.