Header Pipe Size (NPS)
101" NPS (Sch 40 / Sch 80)
151-1/2" NPS (Sch 40 / Sch 80)
202" NPS (Sch 40 / Sch 80)
303" NPS (Sch 40 / Sch 80)
404" NPS (Sch 40 / Sch 80)
Product page
FAV
FAV Air Headers & Air Distribution Manifolds
FAV Air Headers and Air Distribution Manifolds provide centralized distribution and individual isolation of instrument air, pneumatic signals, and purge gases in process plants. Designed as an integrated substitute for bulky field-fabricated multiple-valve piping assemblies, each FAV manifold features a precision-welded main header pipe (1" to 4" NPS in Sch 10 to Sch 160) equipped with up to 24 take-off ports fitted with high-integrity miniature ball valves or needle valves, end drain valves, and safety lockout plugs.
Custom Port Configurations: Available from 4-way up to 24-way outlet distribution (single or dual opposing rows)
Main Pipe Sizes: 1", 1-1/2", 2", 3", and 4" NPS (DN 25 to DN 100) in Schedules 10, 40, 80, and 160
Inlet Connections: Flanged ASME B16.5 Class 150/300/600, Ball Valve, Needle Valve, or Female/Male NPT / BSPP / BSPT
Outlet Valves: Integrated 1/4", 3/8", or 1/2" FAV Stainless Steel Ball Valves (1000 PSI) or Needle Valves (6000 PSI)
Ready for quotationShare your range, connection and case requirement.
Talk to ATHDesign StandardsASME B31.3 Process Piping, ASME B16.5, ASME B1.20.1 NPT, MSS-SP-99 / MSS-SP-105
Header Pipe Size1" to 4" NPS (Standard stock: 1" and 2" Sch 40/80)
Number of Outlets4-Way, 6-Way, 8-Way, 10-Way, 12-Way, 16-Way, 20-Way, 24-Way (Custom pitch available)
Inlet End Types1/2" to 2" NPT/BSPP Female/Male, ASME Flanged (Class 150/300/600 RF), Socket Weld
Outlet Valve TypesFAV SS 316 1-Piece / 3-Piece Ball Valves (1000 PSI) or Heavy-Duty Needle Valves (6000 PSI)
Drain Connection1/2" NPT Female Ball Valve / Needle Valve with 1/2" NPT Male Hex Plug
Standard MaterialsSS 316/316L (standard), SS 304, Carbon Steel A106B, Duplex 2205, Monel 400, Hastelloy C276
Working PressureUp to 3000 PSIG (207 bar) depending on pipe schedule and selected valve series
Operating Temperature-40°C to +200°C (-40°F to +392°F) with PTFE/PEEK valve packing
Testing & Certification100% Hydrostatic & Pneumatic Shell/Seat Tested, EN 10204 3.1 MTR, NACE MR0175
Technical Selection Guide
FAV Air Distribution Header Specifications
Select header pipe size, port configuration, valve type, and inlet termination.
StandardASME B31.3 / B16.5
Header NPS1" to 4"
Port Count4 to 24-Way
MaterialsSS316L, SS304, CS, Duplex
Distribution Outlets
4W4-Way Single Row Outlets
8W8-Way Dual Row (4x4 Opposing)
10W10-Way Dual Row (5x5 Opposing)
12W12-Way Dual Row (6x6 Opposing)
16W16-Way Dual Row (8x8 Opposing)
24W24-Way Dual Row (12x12 Opposing)
Outlet Valve Options
BV4N1/4" NPTF Ball Valve (1000 PSI)
BV8N1/2" NPTF Ball Valve (1000 PSI)
NV4N1/4" NPTF Needle Valve (6000 PSI)
NV8N1/2" NPTF Needle Valve (6000 PSI)
Model Code
FAV-AH-20-SS316-10W-BV4N-FL150
Brand
Type
Size
Material
Ports
Valve
Technical specifications
Design Pressure3000 PSIG (207 bar)
Design Temperature-40°C to +200°C
Welding CodeASME Section IX TIG
Testing StandardMSS-SP-99 Hydrostatic
Installation & Operation Notes
Mount manifold horizontally with drain valve positioned at bottom center or end for complete moisture drainage.
Ensure all unused outlet ports are fitted with hex safety plugs before pressurizing the pneumatic system.
Product Engineering & Advantages
FAV Air Headers streamline plant instrumentation layouts by eliminating complex site-welded manifolds. By providing a single point of supply for pneumatic actuators, positioners, transmitters, and purge systems, they reduce leak points, simplify maintenance isolation, and substantially lower installation labor costs.
Every manifold undergoes automated precision TIG welding with full root penetration, followed by internal passivation and ultrasonic cleaning to prevent particulate contamination in sensitive pneumatic instrumentation loops.
Compact, space-saving design with customized center-to-center port spacing to fit tight control racks and analyzer shelters
Optional mounting brackets and U-bolt assemblies for rigid wall or structural steel framework installation
Valves can be color-coded with customized handle locking plates (padlockable) for safety compliance
Drain port situated at lowest point ensures complete removal of condensate buildup in compressed air lines
Ordering & Specification Matrix
10-Way (5x5 Opposing)2" SS316 Main Header, 2" NPTF Inlet Ball Valve, 10x 1/2" NPTF Ball Valves, 1/2" Drain Valve
12-Way (Single Row)1" SS304 Main Header, 1/2" NPTF Inlet, 12x 1/4" NPTF Ball Valves, 1/2" Drain Needle Valve
16-Way (8x8 Opposing)2" SS316 Main Header, 1" Class 150 Flanged Inlet, 16x 1/2" NPTF Needle Valves, 1/2" Drain
20-Way (10x10 Opposing)2" SS316 Main Header, 2" Class 300 Flanged Inlet, 20x 1/2" NPTF Ball Valves, 1/2" Drain
Mounting AccessoriesSupplied with SS 304 / SS 316 Mounting Clamps, Standoff Brackets, and Hardware
Part Number Breakdown
Example Part CodeFAV-AH-20-SS316-10W-BV4N-FL150
Brand PrefixFAV = FAV Fittings and Valves
Product FamilyAH = Air Distribution Header
Header Size20 = 2" NPS Pipe Size (Sch 40)
Header MaterialSS316 = Stainless Steel 316/316L
Port Quantity10W = 10-Way Distribution Ports (5x5 Opposing)
Outlet Valve TypeBV4N = 1/4" NPT Female Ball Valve with Plug
Inlet TypeFL150 = 2" ASME B16.5 Class 150 Raised Face Flange