Product Description
Armstrong 2½ FSA Flo-Trex Valve – 2-1/2" NPT x 2-1/2" Flanged, Straight or Angle
The Armstrong 2½ FSA Flo-Trex valve is a cast iron Flo-Trex valve that can be installed in a straight or angle position, 2-1/2" straight or angle pattern. A Flo-Trex valve is installed on the discharge side of a pump and combines three valves in one body: a non-slam check valve, a tight shut-off valve and a calibrated balancing (throttling) valve with metering ports for flow measurement. Replacing three separate fittings with one reduces equipment cost, installation labour and the space needed in the mechanical room.
| Model | 2½ FSA |
| SKU | 2-1/2-FSA |
| Size | 2-1/2" |
| Configuration | Straight / Angle |
| Connection | 2½ NPT (inlet from pump) x 2½ Flanged (outlet to system) |
| Maximum working pressure | 125 psig (9 bar) |
| Working temperature | 250°F (121°C) |
| Weight | 24 lb (10.9 kg) |
Design & Submittals
Materials of construction
- Body: Cast iron
- Disc and seat: Bronze
- Stem: Stainless steel
- Packing: John Crane Kevlar (non-asbestos)
Dimensions – inches (mm)
| A | B | C | D | E | F (clearance to remove cover) |
|---|---|---|---|---|---|
| 8.38 (213) |
11.50 (292) |
6.00 (152) |
5.00 (127) |
3.50 (89) |
3.75 (95) |
F = clearance required above the valve to remove the cover. Dimensions and weights are for reference only; certified dimensions available on request.
Pressure drop
| Position in pipe line | 3 ft/s (45 USgpm) |
4 ft/s (60 USgpm) |
5 ft/s (75 USgpm) |
6 ft/s (90 USgpm) |
8 ft/s (120 USgpm) |
|---|---|---|---|---|---|
| Straight | 1.6 ft | 3.2 ft | 5.1 ft | 7.2 ft | 12.5 ft |
| Angle | 1.3 ft | 2.2 ft | 3.5 ft | 4.7 ft | 8.2 ft |
Pressure drop in feet of water at the line velocity shown (flow in USgpm in brackets).
Notes
- FSA valves must be installed with the stem in the vertical upright position.
- Connections are threaded NPT or 125 lb. flanged as indicated.
- Companion flanges are provided on flanged connections.
- Dimensions are for reference only; for exact installation data contact the factory.
Documents
- Flo-Trex Valves, Model FSA – Submittal (PDF)
- SG & FTV Product Information Brochure (PDF)
- Flo-Trex Valves Typical Specifications (DOC)
Warranty
Covered by the Armstrong Fluid Technology manufacturer's warranty.
- Armstrong Terms of Sale & Warranty – Canada (PDF)
- Conditions de vente et garantie Armstrong – Canada, français (PDF)
Installation, Maintenance, Parts Kits & Manuals
Replacement parts, repair kits and help selecting the right Flo-Trex valve – call (416) 236-2338 or email sales@bramhambros.com.
