RS Boiler Feed System

The Sellers RS boiler feed system provides a simple assembly which collects condensate and pumps feedwater into a boiler. The unit includes a receiver to hold returned condensate as well as a float valve to add make-up water. Components are factory assembled on a structural steel stand. Many options and customer configurations are available upon request. More sophisticated pressurized return systems as well as heated return systems and deaerators can be provided to handle more critical needs.

Features

Receiver: Tanks are made of heavy steel plate with a generous corrosion allowance. Heads are at least 5/16” thick. Standard receivers are vented as they are not designed to be pressurized.
Stand: The heavy duty structural steel stand rigidly supports all components.
Pumps: Centrifugal pumps with mechanical seals eliminate the problems that are typical with packed pumps. Closed coupled pumps eliminate coupling and alignment problems while providing high efficiency, lower NPSH and better balance. Stainless steel and bronze trimmed pumps reduce corrosion and wear.
Drain valve to flush and clean tank.
Stainless steel temperature gauge.
Water gauge glass assembly with safety type ball check gauge cocks.
Make-up feeder: MM #21 provides 17 gpm at 40 psi supply pressure to handle system losses. Larger pneumatic or electric solenoid valves are optionally available when needed.
Electric control: Pump combination motor starter and circuit breakers provided with overload protection.
Control panel with numbered terminal trips and H-O-A switches all pre-wired to motors.

Downloads:

Description

Advantages

Deaeration reduces oxygen and carbon dioxide corrosion in the boiler and associated piping
Using preheated feedwater reduces the chance of thermal shock caused by the expansion and contraction of heating surfaces
Mechanical deaeration provides a fixed method of eliminating oxygen without the use of the expensive chemical alternative
Continuous deaeration reduces total CO2 in the steam system, ultimately lowering maintenance costs

Options

Linings: Corrosion resistant epoxy-phenolic linings can be added to extend tank life.
Heating Assembly: Steam injectors can pre-heat the water and remove up to 90% of the oxygen and CO2. Hot feedwater reduces thermal shock and stress on the boiler.
Manhole, 16 Round: Allows greater access to receiver interior.
Pump Discharge Piping: Can include check valve, balancing valve and bypass lines for better operation.
Low Water Cutoff: To protect the pumps.
ASME Receiver: To meet code requirements.
Stainless Steel Shell Construction.
Vertical Confirguration.