Cleanroom Utility Systems

Steam Condensate Recovery System

A factory-assembled duplex electric return package that collects hot condensate in one vented stainless receiver and transfers it through two alternating low-NPSH pumps.

One vented stainless receiver
Two alternating electric pumps
Pre-piped valves and level controls

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Product Introduction

The Steam Condensate Recovery System is a skid-mounted electric return unit for collecting gravity-fed condensate and lifting it into a remote return header. The selected package has one horizontal atmospheric 304 stainless-steel receiver, two identical close-coupled centrifugal pumps mounted side by side beneath it, one pre-wired control enclosure and one externally visible level gauge. Separate suction branches feed the two pumps, while isolation and non-return valves protect each branch before both outlets join a common discharge manifold. The receiver also provides dedicated inlet, vent, overflow and drain connections. Float or magnetic level switches start, alternate and assist the pumps as the liquid level changes, while a high-level input supports local alarm and building-management monitoring. This identity is a condensate collection-and-lift package, not a flash vessel, pressurized pump trap, deaerator, boiler-feed dosing system or water-treatment skid.

Key Features

Single horizontal 304 stainless-steel atmospheric receiver with inlet, vent, overflow and drain connections

Two matched low-NPSH stainless centrifugal pumps in a duty-assist or duty-standby arrangement

Automatic lead-pump alternation to distribute running hours between the two pump trains

Independent pump suction isolation and discharge non-return valves for branch-level service

Common flanged discharge manifold for one field return-line connection

Visible receiver level gauge with separate control and high-level switching points

Pre-wired IP65 metal control enclosure with status lamps, selector controls and emergency stop

Rigid powder-coated carbon-steel skid frame with stainless-steel piping supports

Customer Product Concerns

A condensate return package must accommodate hot inflow and changing load without cavitation, overflow, branch reverse flow or loss of pumping availability.

Hot condensate can flash inside a vented receiver and reduce the suction margin available to an electric pumpSize the receiver vent for the expected flash-steam load and select low-NPSH pumps with the required flooded suction at the maximum condensate temperature.

One pump may be unable to clear a peak return load or may be unavailable during maintenanceUse two equal pump trains with automatic lead alternation and assist or standby logic so the second pump can respond to a higher liquid level.

Reverse flow through an idle pump can cause unstable operation and complicate service isolationProvide a dedicated suction isolating valve and discharge non-return valve on each pump branch before the outlets combine.

An undersized discharge line or unaccounted static head can leave the receiver at high levelSelect the package from the actual condensate return rate and total discharge head, then size the common return line for the maximum combined pumping rate.

Typical Applications

Central condensate return from cleanroom air-handling steam coilsPharmaceutical utility and process-heating condensate collectionSterilizer, autoclave and jacketed-vessel utility condensate returnFood and beverage plant steam-heating networksMechanical-room condensate lift where gravity return cannot overcome the system head

Technical Parameters

The selected catalogue identity is a 200 L-class duplex electric condensate recovery skid with one horizontal atmospheric receiver and two fixed-speed pumps. The envelope and construction below describe this locked image configuration; pump duty, connection sizes, control voltage and vent capacity remain selectable from the hydraulic and flash-steam design conditions.

Core Material	304 stainless-steel receiver, pump casings, impellers, suction and discharge pipework with a powder-coated carbon-steel structural skid
Panel Thickness	Receiver shell typically 3.0-4.8 mm for the selected 200 L-class atmospheric package
Effective Width	Approximately 650 mm skid depth for the selected duplex configuration
Maximum Length	Approximately 1500 mm overall skid length for the selected 200 L-class unit
Steel Facing Thickness	Control-enclosure sheet and formed stainless guards typically 1.5-2.0 mm
Core Density	304 stainless steel approximately 7900 kg/m³
Thermal Conductivity	304 stainless steel approximately 15 W/(m·K) at 20°C
Surface Finish	Neutral satin-finished and passivated stainless receiver and pipework with a black powder-coated structural skid
Joint Type	PN16 flanged field inlet, vent, overflow and common discharge connections with bolted valve branches and welded skid pipework
Customization	Available based on the intended application and operating environment.

Available Options

Duty-assist or duty-standby duplex pump logicAlternative receiver volume for the return profile and pump cycle ratePump selection for condensate temperature, flow and total delivery head304 stainless-steel or powder-coated carbon-steel frameAlternative flanged connection standards and nominal sizesVariable-speed pump control where a modulating return profile is requiredRemote BMS contacts for pump healthy, pump run and high-level alarmOutdoor enclosure, insulation and heat-tracing package for a defined climate

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