Brochure

125
Selection Guides
Hoffman Specialty
®
Selection Guidelines
Self-Contained
Temperature Pilot
Spring
Pilot
Feed
Line
Feedback
Line
Heated
Water
ThermoBulb
Cold
Water
Instantaneous Hot Water Heater
Main Valve
Steam
Inlet
Check
Valve
Heated
Water
Return
Circulating Pump
Y Strainer
F&T
Trap
Y Strainer
Vacuum
Breaker
Self-Contained
Temperature Pilot
Spring
Pilot
Feedback
Line
Main Valve
Steam
Inlet
Thermo
Bulb
Storage
Heater
Y Strainer
Vacuum
Breaker
F&T
Trap
Y Strainer
Instantaneous Heater Domestic Hot Water
Storage Heater for Domestic Hot Water
Description: Direct acting pilots may be used to
control instantaneous heat exchangers when control
air is not available (use in conjunction with fail safe
valves for domestic hot water applications).
(Must be used to circulate water across
bulb to prevent temperature build-up in
the heat exchangers tube.)
Description: A Series 2000 Main valve used with
a Self-Contained Temperature pilot and a Spring
pressure pilot is recommended for storage tanks
when steam pressure exceeds 15 psig (1 bar).
Series 2000 Typical Applications (continued)