Class 125 | ASTM A126-B | 2″ to 12” | Flanged | Cast Iron Suction Diffusers
Care to learn more about our many suction diffuser solutions?
Contact our sales and support team today to discover your perfect suction solution!
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SSI products are engineered and manufactured to provide high-quality valves at competitive prices. SSI has successfully developed a reputation for manufacturing industry leading cast iron suction diffusers.
As well as cast iron suction diffusers, SSI also manufactures basket strainers, butterfly valves, triple duty valves, expansion joints, check valves, foot valves utilizing state-of-the-art, computer controlled, automated machining equipment.
125SFI Suction Diffuser
Product Description:
SSI manufactures cast iron suction diffusers that are long-lasting, functional, cost-effective, and are well suited for commercial and industrial use. SSI cast iron suction diffusers are suitable for a full range of water, gas, steam, petrochemical and general use/utility services and applications.
Features Include:
• Pressure rated to 200 PSIG
• Temperatures to 212º F
• Available in sizes of 2” to 12″
• All encompassing strainer, flow straightener, elbow and pipe reducer for pump applications
• Direct mount to the suction side of a pump in either horizontal or vertical position
• Flow turbulence reduced through integral straightening vanes for improved pump efficiency
• All strainers supplied with removable Stainless Steel startup mesh over Stainless Steel perforated plate
• Cast Iron FF Flanges on all sizes
• All sizes complete with O-ring sealed covers with knob bolts to minimize down time
• Supporting pads for easy mounting of standard I.D. support foot
• Drain connection with plug furnished as standard

Our SSI Cast Iron Suction Diffusers have the following Build of Materials and Product Specifications.
No. | Part Name | Material |
---|---|---|
1 | Body | Cast Iron A126-B |
2 | Cover | Cast Iron A126-B |
3 | Perforated Screen1 | 304 SS |
4 | Mesh Scree | 304 SS |
5 | Knob2 | Ductile Iron |
6 | O-ring1-Standard Optional Optional |
Buna N EPDM Viton |
7 | Plug2 | Malleable Iron |
DIMENSIONS inches (mm) and WEIGHTS pounds (kg) | ||||||||||
Size | A | B | C1 | D | E | F | G2 | H | Weight | |
---|---|---|---|---|---|---|---|---|---|---|
Inlet | Outlet | |||||||||
2 (50) |
11/2 (40) |
101/4 260.00 |
41/2 114.30 |
5 127.00 |
41/2 114.30 |
23/16 55.00 |
3/4 (20) |
3/4 (20) |
515/16 151.00 |
21 (9.5) |
2 (50) |
2 (50) |
101/4 260.00 |
41/2 114.30 |
5 127.00 |
41/2 114.30 |
23/16 55.00 |
3/4 (20) |
3/4 (20) |
515/16 151.00 |
23 (10.4) |
21/2 65 |
2 (50) |
107/8 276.00 |
5 127.00 |
5 127.00 |
5 127.00 |
21/2 64.00 |
1/2 (15) |
1 (25) |
69/16 167.00 |
32 (14.5) |
21/2 65 |
21/2 65 |
107/8 276.00 |
5 127.00 |
5 127.00 |
5 127.00 |
21/2 64.00 |
1/2 (15) |
1 (25) |
69/16 167.00 |
34 (15.4) |
3 (80) |
2 (50) |
101/4 260.00 |
51/2 139.70 |
5 127.00 |
51/2 139.70 |
23/16 55.00 |
3/4 (20) |
1 (25) |
515/16 151.00 |
37 (16.8) |
3 (80) |
21/2 (65) |
115/16 288.00 |
51/2 139.70 |
5 127.00 |
51/2 139.70 |
3 76.00 |
3/4 (20) |
1 25 |
71/16 179.00 |
49 (22.2) |
3 (80) |
3 (80) |
115/16 288.00 |
51/2 139.70 |
51/4 133.00 |
51/2 139.70 |
3 76.00 |
3/4 (20) |
1 25 |
71/16 179.00 |
55 (24.9) |
4 (100) |
3 (80) |
12 332.00 |
51/2 165.10 |
51/4 133.00 |
61/2 165.10 |
37/8 98.00 |
3/4 (20) |
1 25 |
83/4 223.00 |
57 (25.9) |
4 (100) |
4 (100) |
1213/16 325.00 |
61/2 165.10 |
71/8 181.00 |
61/2 165.10 |
37/8 98.00 |
3/4 (20) |
11/4 (32) |
81/4 210.10 |
92 (41.7) |
5 (125) |
4 (100) |
153/4 400.00 |
71/2 190.50 |
71/8 181.00 |
71/2 190.50 |
47/16 112.70 |
3/4 (20) |
11/4 (32) |
75/8 194.00 |
97 (44.0) |
5 (125) |
5 (125) |
161/8 411.00 |
71/2 190.50 |
71/8 181.00 |
71/2 190.50 |
59/16 141.00 |
1 (25) |
11/4 (32) |
10 254.00 |
101 (45.8) |
6 (150) |
4 (100) |
13 332.00 |
8 203.20 |
71/8 181.00 |
8 203.20 |
37/8 98.00 |
3/4 20 |
11/4 (32) |
83/4 223.00) |
140 (63.5) |
6 (150) |
5 (125) |
17 433.00 |
8 203.20 |
71/8 181.00 |
8 203.20 |
57/16 138.00 |
1 (25) |
11/4 (32) |
1011/16 272.00 |
145 (65.8) |
6 (150) |
6 (150) |
17 433.00 |
8 203.20 |
77/8 200.00 |
8 203.20 |
57/16 138.00 |
1 (25) |
2 (50) |
1011/16 272.00 |
182 (82.6) |
8 (200) |
6 (150) |
17 433.00 |
8 203.20 |
77/8 200.00 |
9 228.60 |
57/16 138.00 |
1 (25) |
2 (50) |
1011/16 272.00 |
197 (89.4) |
8 (200) |
8 (200) |
2013/16 528.00 |
9 228.60 |
161/4 413.00 |
9 228.60 |
7 176.50 |
1 (25) |
2 (50) |
115/8 295.00 |
292 (132.5) |
10 (250) |
8 (200) |
2013/16 528.00 |
9 228.60 |
161/4 413.00 |
11 279.40 |
7 176.50 |
1 (25) |
2 (50) |
115/8 295.00 |
312 (141.5) |
10 (250) |
10 (250) |
261/4 667.00 |
11 279.40 |
161/4 413.00 |
11 279.40 |
93/4 248.00 |
1 (25) |
2 (50) |
143/16 360.00 |
398 (180.5) |
12 (300) |
8 (200) |
255/16 643.00 |
11 279.40 |
161/4 413.00 |
11 279.40 |
81/4 209.00 |
1 (25) |
2 (50) |
133/4 349.00 |
412 (186.9) |
12 (300) |
10 (250) |
261/4 667.00 |
11 279.40 |
161/4 413.00 |
12 304.80 |
93/4 248.00 |
1 (25) |
2 (50) |
143/16 360.00 |
491 (222.7) |
12 (300) |
12 (300) |
261/4 667.00 |
12 304.80 |
181/8 461.00 |
12 304.80 |
93/4 248.00 |
1 (25) |
2 (50) |
153/8 390.00 |
573 (259.9) |
For almost 15 years, ValvSource America has continually committed itself to offer the best SSI cast iron suction diffuser products to meet a wide range of applications and requirements.
As an industry leader, ValvSource America has your perfect SSI cast iron suction diffusers solution. Our success in the valves industry is attributed to our customer-centric team of sales personnel, engineers, and trained staff that are collectively committed to providing quality products at a price you would come to expect.
To find your perfect valve solution, please contact ValvSource America today at 1 (877) 683-2200 or by email at [email protected].