Variable Demand Direct Steam Injection Water Heater

What is a "Variable Flow" Steam Injection Heater?

The Pick Variable Flow Steam Injector mixes medium-to-high pressure steam with cold water and delivers instantaneous hot water at a precisely controlled temperature over a wide range of water flows. 

It is used to accommodate wide variations in demand and frequent start-stop applications and is ideally suited as a central heating system for multiple use points such as hose wash-down stations or plant sanitation.  Standard systems can handle 12:1 water flow turndown or designed with dual control valves for up to 100:1 water flow turndown.

The Variable Flow system is ideal for replacing inefficient heat exchanges, storage tanks, steam spargers, and problematic individual steam/water mixing stations.

Why Choose a Pick Variable Flow Heater?

We're the Only One

Pick is the only Direct Steam Injection company to offer a true Instantaneous Variable Flow central system for multiple hose use points and on/off applications

Precise Temperature Control

Accurate temperature control +/- 3°F (1.6°C)

Energy Efficient

100% heat transfer - cuts fuel costs as much as 28% compared with indirect heat exchangers 

Wide Operating Range

Widest operating range of any steam injection heater; up to 100:1 turndown with optional dual control valves

How the Pick "Variable Flow" Heater Works:

1. Water (or water-miscible liquid) to be heated enters mixing chamber here.
2. Set controller to desired set point.
3. Pump circulates water within the system to prevent stratification of water during low-flow conditions or intermittent use.
4. Modulating steam control valve is activated by the temperature controller.
5. Steam and liquid mix instantly and thoroughly within the heater body.
6. During idle mode (no demand) the by-pass relief valve discharges a minimal amount of added condensate as steam is admitted to maintain set point temperature.
7. Heated liquid exits through the outlet.