North American wafer valves are lightweight, rugged and built to last.
FEATURES/SPECIFICATIONS
2052
EP2
Valve Body Material Valve Disc Material Valve Shaft Material
Cast Iron Cast Iron 416 SST
Cast Iron Cast Iron 416 SST
10psi w/< 2psi
10psi w/< 2psi
Maximum Inlet Pressure, psi
drop at valve position for 1156
drop at high fire for 1146
10psi w/<1psi
10psi w/<1psi
Maximum Inlet Pressure, psi
drop at valve position for 1146
drop at high fire for 1156
Acceptable Media
Combustion Air
Combustion Air
Fluid Temperature Range
5°F to 250°F (-15°C to 121°C) for 1156 250°F - 700°F (121°C to 371°C) for 1146
5°F to 250°F (-15°C to 121°C) for 1156 250°F - 700°F (121°C to 371°C) for 1146
Ambient Temperature Range
-40°F to 140°F (-40°C to 60°C)
-4°F to 175°F (-20°C to 80°C)
Input Signal
4-20mA
4-20mA
Protocol
Hart
Hart
Feedback
4-20mA
4-20mA
Agency Approval Protection Concept
FM
None
Explosion Proof/Intrinsic Safe/Non-Incendive
General Purpose Non-Hazardous 20psi to 90psi 0psi to 90psi
Suitable Area
Class I, Div. II 5psi to 145psi 6psi to 140psi
Supply Air Air Output
Switches
(2) SPDT Switches in Positioner
None
Display
None
Operator panel w/4 push buttons and display
Visual Indication Mechanical Stops
On Positioner
On Positioner
2
2
VALVE SIZING
Full port wafer valves in lines of the same pipe size give increasing flow for a fixed pressure drop until they are about 60° or 70° open. At 90° open, the valve’s flow resistance is negligible. Its pressure drop is practically zero, and it can be ignored in pressure drop calcula- tions. For control sensitivity, wafer valves should be selected for maximum flow at not more than 70° open.
Bulletin 1156/46/2052-EP2 page 2
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