Deaerator Accessories - Relief Valve, Pressure Gauge, Thermometer, Control Valves, Level Switches, Overflow Valves, Gauge Glass

Accessories

Kansas City Deaerator can provide accessories to complete the deaerator as a turnkey system. Typical systems include pressure and temperature monitoring, level control, pressure control, boiler feed pumps, boiler feed pump recirculation and control panels. Mechanical, pneumatic or electronic accessories can be utilized to interface with existing plant control systems.

Relief Valves
Pressure Gauge
Thermometer
Control Valves
Level Switches
Overflow Valves
Gauge Glass
Other
Accessories Chart

	Relief Valve One or more relief valves are provided to either protect the pressure vessel against over-pressurization or act as sentinel relief. Overpressure can occur upon a failure of the steam pressure reducing valve, single or multiple trap discharges entering the deaerator or other conditions. It is the responsibility of the purchaser to evaluate all possible conditions and determine the worst case scenario for sizing the relief valve. If sentinel relief is selected by the customer for the deaerator, safety relief must be provided elsewhere in the system. When sentinel relief is selected, a nominally sized sentinel relief valve will be provided unless HEI is specified, in which case, sizing will be per HEI standards. The relief valve(s) are set to relieve at the deaerator design pressure.
Pressure Gauge A pressure gauge is provided for the steam space in the deaerator. A typical gauge would be 4 ½” dial (minimum) type with stainless steel bourdon tube construction. Either dry or liquid filled gauges may be specified. A siphon tube and shutoff cock for mounting the pressure gauge is included. In addition to considering the operating pressure of the deaerator, the gauge resolution (graduations) should be evaluated when selecting the pressure range of the pressure gauge.
Thermometer Thermometers, when properly located, give a visual indication of deaerator performance. Preferred locations are the steam space of the deaerator, and under the water level in the storage area. Gauges are 5” dial (minimum) bimetal with stainless steel thermowells. Gauges should be constructed with adjustable viewing angle, hermetically sealed and with a stem length consistent with the location of the gauge in the deaerator. In addition to consideration of the operating temperature of the deaerator, the gauge resolution (graduations) should be evaluated when selecting the temperature range of the thermometer.
	Control Valves Control Valves are typically used to control the inlet water flow from one or more sources. The valve size depends on the required flow rate, temperature, and valve inlet and outlet pressures. The valve shall be modulating type with stainless steel trim and can be specified as mechanical, pneumatic or electronic. An external float cage and lever actuator are provided for a mechanically operated valve. For pneumatic control, a pneumatic actuator and caged displacer level controller are provided. If electronic control is specified, provide an I/P positioner on the valve to accepting a 4-20 ma input and a level transmitter are specified required.
Level Switches Level switches are utilized for warning of high or low water levels , actuating a pneumatic overflow valve, and/or for boiler feedpump cutoff. Audible or visible alarms may be specified if desired. As a minimum the switches shall have the following characteristics: Housings will be general purpose NEMA-1 Switch ratings shall be 10 amps 120 VAC/DC Switch action shall be SPST Other housings, ratings, and actions may be specified Mercury or non-mercury switches may be specified
Overflow Valves Overflow control valves are used to protect against high water level in the storage area. This device can be a float trap or a control valve with control sized to relieve the full capacity of deaerator.
	Gauge Glass Gauge glasses are used to visually indicate the liquid level in the storage tank . The glass consists of a water column with shutoff valves to cover 10%-90% of the water level in the storage section. Glass can be specified as tubular red line pyrex, reflex or magnetic type. The gauge glass should be rated for the operating temperature and pressure of the deaerator.
	Other Instruments and Accessories In addition to those shown here, Kansas City Deaerator can provide a wide variety of transmitters, controllers and other items. Consult with the factory for specialized applications.

Accessories Chart

ITEM	DESCRIPTION	ACC PKG	PUMP PKG	√ Select
A	WATER INLET
A1	Inlet Valve
	Mechanical	STD	STD
	Pneumatic	OPT	OPT
A2	Level Controller	STD	STD
	Level Transmitter	OPT	OPT
A3	Inlet Valve Bypass Valves	OPT	STD
A4	Inlet Valve Bypass Piping	OPT	STD
A5	Inlet Valve Bypass Strainer	OPT	STD
B	STEAM CONTROL
B1	Steam PRV		OPT
	Self Contained	OPT	OPT
	Pneumatic	OPT	OPT
B2	Steam PRV Controller	OPT	OPT
B3	Steam PRV Bypass Valves	OPT	OPT
B4	Steam PRV Bypass Piping	OPT	OPT
B5	Steam PRV Bypass Strainer	OPT	OPT
C	RELIEF VALVE
C1	Relief Valve
	Sentinel	STD	STD
	Full	OPT	OPT
C2	Relief Valve Exhaust Piping	OPT	OPT
D	THERMOMETER
D1	(2) 5" Thermometer w/ss wells	STD	STD
E	PRESSURE GAUGE
E1	(1) 4 1/2" Pressure Gauge	STD	STD
E2	Siphon & Cock	STD	STD
E3	Pressure Transmitter	OPT	OPT
F	VENT
F1	Vent Valve	STD	STD
F2	Vent Orifice w/ Flange	OPT	OPT
F3	Vent Bypass Valves	OPT	OPT
F4	Vent Bypass Piping	OPT	OPT
H	VACUUM BREAKER
H1	Vacuum Breaker	STD	STD

ITEM	DESCRIPTION	ACC PKG	PUMP PKG	√ Select
M	BFP RECIRC
M1	BFP Recirc Shutoff	N/A	OPT
M2	BFP Recirc Check	N/A	OPT
M3	BFP Recirc Orifice	N/A	OPT
	BFP Recirc ARC Valve	N/A	OPT
M4	BFP Recirc Piping	N/A	OPT
M5	BFP Recirc Pressure Gauge	N/A	OPT
N	BFP SUCTION
N1	BF Pumps
	(2) 100% Capacity	N/A	STD
	(3) 50% Capacity	N/A	OPT
	Motors
	ODP	N/A	STD
	TEFC	N/A	OPT
N2	BFP Suction Isolation Valve	N/A	STD
N3	BFP Suction Strainer	N/A	STD
N4	BFP Suction Piping	N/A	STD
N5	BFP Suction Expansion Joint	N/A	STD
N6	BFP Discharge Pressure Gauge	N/A	OPT
N7	BFP Discharge Check Valve	N/A	OPT
N8	BFP Discharge Isolation Valve	N/A	OPT
O	CHEMICAL FEED
O	Chemical Feed Quill	OPT	OPT
Q	OVERFLOW
Q1	Overflow Valve/Trap	STD	STD
Q3	Overflow Piping	OPT	STD
R	LEVEL SWITCHES
R1	Level Switches
	High and Low (TWO)	STD	STD
	High High (ADDITIONAL)	OPT	OPT
R2	Level Switch Bridle Piping	OPT	OPT
S	GAUGE GLASS
S1	Gauge Glass
	Red Line Pyrex	STD	STD
	Reflex	OPT	OPT
	Magnetic	OPT	OPT
S2	Gauge Glass Bridle	OPT	STD