Pipe Vessel Size (NPS)
202" NPS (60.3 mm OD)
303" NPS (88.9 mm OD)
404" NPS (114.3 mm OD)
606" NPS (168.3 mm OD)
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FAV
FAV Industrial Condensate Pots & Seal Chambers
FAV Condensate Pots (also known as Seal Pots or Condensate Chambers) are specialized pressure vessels installed in differential pressure (DP) flow measurement lines to catch foreign material, condense steam or hot condensable vapors, and maintain constant, identical liquid head reference columns across impulse lines. Manufactured in accordance with ASME B31.1 (Power Piping) and ASME B31.3 (Process Piping), FAV Condensate Pots are fabricated from seamless pipe (2", 3", 4", and 6" NPS in Sch 40, Sch 80, Sch 160, and XXS) with dish-end closures and are available in 2, 3, 4, 5, or 6-port configurations (Designs Type A through Type F).
Fabricated from seamless carbon steel, stainless steel, alloy steel, or nickel alloy pipe with full-penetration welded dished ends
Standard Pipe Sizes: 2", 3", 4", and 6" NPS (DN 50, DN 80, DN 100, DN 150) in Schedules 40, 80, 160, and XXS
Port Configurations: 2-Port, 3-Port, 4-Port, 5-Port, and 6-Port (Design Types A, B, C, D, E, F per international piping standards)
Process & Instrument Connections: 1/4", 3/8", 1/2", 3/4", and 1" NPT Female, BSPP, Socket Weld, Butt Weld, or ANSI Flanged
Ready for quotationShare your range, connection and case requirement.
Talk to ATHDesign CodesASME B31.1 Power Piping, ASME B31.3 Process Piping, ASME Section VIII Div 1, IBR (Indian Boiler Reg.)
Nominal Pipe Sizes2" NPS (60.3mm OD), 3" NPS (88.9mm OD), 4" NPS (114.3mm OD), 6" NPS (168.3mm OD)
Pipe SchedulesSch 40, Sch 80, Sch 160, Sch XXS (Extra Extra Strong)
Port Layout OptionsType A (2 Ports), Type B (3 Ports), Type C (4 Ports), Type D (4 Ports opposing), Type E (5 Ports), Type F (6 Ports)
Connection End Types1/2" NPT Female (standard), 3/4" NPT, 1" NPT, Socket Weld (ASME B16.11), ASME Flanges
Working Pressure1800 PSI to 10,000 PSI (124 bar to 690 bar) depending on schedule and material
Operating Temperature-50°C to +550°C (-58°F to +1022°F) for high-temperature alloy steel P11/P22/P91
Standard MaterialsASTM A106 Gr B Carbon Steel, ASTM A312 TP316L/304L, ASTM A335 P11/P22/P91, Duplex 2205
Non-Destructive Testing100% Dye Penetrant (PT), Hydrostatic Test, Radiographic Test (RT) on request, PMI verified
Technical Selection Guide
FAV Condensate Pot & Seal Chamber Specifications
Select vessel pipe diameter, wall schedule, material grade, and port layout.
CodesASME B31.1 / B31.3
Pipe Sizes2", 3", 4", 6" NPS
SchedulesSch 40, 80, 160, XXS
Port TypesType A through Type F
Wall Schedule
SCH40Schedule 40 (Standard Pressure)
SCH80Schedule 80 (Heavy Wall / 3000 PSI)
SCH160Schedule 160 (High Pressure / 6000 PSI)
SCHXXSSchedule XXS (Ultra Pressure / 10000 PSI)
Port Design Configuration
AType A (2 Ports: Top + Bottom)
BType B (3 Ports: Top + Side + Bottom)
CType C (4 Ports: Top + 2 Sides + Bottom)
DType D (4 Ports: 2 Top + 2 Bottom)
FType F (6 Ports Multi-Connection)
Model Code
FAV-FCP-30-SCH80-316L-8N-C
Brand
Type
Size
Schedule
Material
Connection
Design
Technical specifications
Fabrication StandardASME B31.1 & B31.3
Weld Inspection100% Dye Penetrant / RT
Hydrostatic Test1.5x Design Pressure
TraceabilityEN 10204 3.1 Mill Test Reports
Application & Piping Notes
Install condensate pots at identical horizontal elevations relative to the orifice plate taps to guarantee zero static head difference.
Blowdown bottom drain valves periodically during steam startup to purge accumulated line slag and debris.
Function & Application Principles
In steam orifice metering and high-temperature gas measurement loops, hot vapors entering impulse lines can flash into steam or produce uneven condensation levels between the high-pressure and low-pressure legs. This creates false differential pressure readings and destroys transmitter calibration.
FAV Condensate Pots provide a large surface area chamber where steam condenses into water at identical elevations for both sensing lines. They also serve as seal liquid containment vessels in corrosive, viscous, or toxic fluid measurement to isolate the transmitter diaphragm.
Maintains stable liquid reference head to eliminate measurement errors caused by ambient temperature swings
Protects electronic differential pressure transmitters from direct exposure to superheated steam temperatures
Traps heavy particulates, pipe scale, and solids before they can plug sensitive instrument tubing and manifolds
Optional mounting brackets allow secure anchoring to vertical structural pipe racks or wall channels
Design Types & Port Configurations
Type A (2 Ports)1 Top Inlet Port + 1 Bottom Drain/Outlet Port (Basic Seal Chamber)
Type B (3 Ports)1 Top Port + 1 Side Instrument Port + 1 Bottom Drain Port
Type C (4 Ports)1 Top Port + 2 Side Ports (Opposing or Offset) + 1 Bottom Drain Port (Most Common Steam Orifice Standard)
Type D (4 Ports)2 Top Fill/Vent Ports + 2 Bottom Sensing/Drain Ports
Type E / F (5-6 Ports)Multiple top filling, side sensing, vent, and bottom blowdown ports for multi-manifold tie-ins
Part Number Breakdown
Example Part CodeFAV-FCP-30-SCH80-316L-8N-C
Brand PrefixFAV = FAV Fittings and Valves
Product FamilyFCP = FAV Condensate Pot
Pipe Size30 = 3" NPS Pipe Body
Pipe ScheduleSCH80 = Schedule 80 Wall Thickness
Material Code316L = Stainless Steel 316/316L
Connection Size8N = 1/2" NPT Female Ports
Port Design TypeC = Type C 4-Port Configuration