Product Description
Armstrong SG-43 Suction Guide – 4" x 3" ANSI 125 Flanged (516860-020)
The Armstrong SG-43 suction guide (part number 516860-020) is installed at the suction side of a centrifugal pump to turn the flow 90°, straighten it with internal guide vanes and strain out debris before it reaches the pump. With a 4" inlet and 3" outlet, it replaces an elbow, strainer and straight run of pipe in one compact fitting, saving space in mechanical rooms. It is rated for 175 psi and 300°F, and the SG-43 has a cast iron body and guide vanes with a stainless steel strainer.
| Model | SG-43 |
| Part number | 516860-020 |
| Connections | ANSI 125 flanged |
| Inlet (from system) | 4.00" (102 mm) |
| Outlet (to pump) | 3.00" (77 mm) |
| Strainer free area | 44.79 in² (289 cm²) |
| Maximum pressure | 175 psi |
| Maximum temperature | 300°F |
| Weight | 52.00 lb (23.6 kg) |
Design & Submittals
Materials of construction
- Body: Cast iron
- Guide vanes: Cast iron
- Strainer: Stainless steel, 0.125" (3 mm) perforations
- Start-up strainer: Fine mesh galvanized steel (remove after 1 week)
- Inlet gauge tapping: 1/4" NPT, plugged
- Magnetic plug: Standard
Dimensions – inches (mm)
| A | B | C | D | E | F | G | ØH | ØI | ØJ |
|---|---|---|---|---|---|---|---|---|---|
| 6.50 (165) | 3.63 (92) | 5.90 (150) | 10.24 (260) | 7.50 (191) | 0.75 (19) | 5.50 (140) | 0.94 (24) | 9.00 (229) | 7.81 (198) |
G = clearance to withdraw strainer. ØH = support pipe size (supplied by contractor). Dimensions are for reference only; tolerance ±0.125" (±3 mm). Certified dimensions available on request.
Pressure drop – ft (m) of water at flow in USGPM (L/s)
| Velocity ft/s (m/s) | 3 (0.91) | 4 (1.22) | 5 (1.52) | 6 (1.83) | 8 (2.44) | 10 (3.05) | 12 (3.66) |
|---|---|---|---|---|---|---|---|
| Pressure drop | 0.20 (0.06) | 0.35 (0.11) | 0.55 (0.17) | 0.80 (0.25) | 1.42 (0.43) | 2.20 (0.67) | 3.15 (0.96) |
| Flow | 70 (4.4) | 92 (5.8) | 115 (7.3) | 138 (8.7) | Call* | 230 (14.5) | 276 (17.4) |
* Flow at 8 ft/s is misprinted in the manufacturer's submittal – contact us to confirm.
Documents
- Model SG Suction Guide Submittal (PDF)
- SG & FTV Product Information Brochure (PDF)
- Suction Guide 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
- Companion flanges are not included.
- Support the suction guide with a 0.94" (24 mm) support pipe (dimension ØH), supplied by the contractor.
- Leave at least 5.50" (140 mm) clearance (dimension G) to withdraw the strainer for cleaning.
- Remove the fine mesh start-up strainer after 1 week of operation.
- The 1/4" NPT inlet gauge tapping is supplied plugged; the magnetic plug collects ferrous debris and should be checked during routine maintenance.
- Replacement strainers, start-up strainers and gaskets are available – see the replacement parts list below, then call (416) 236-2338 or email sales@bramhambros.com to order.