Class 125 | Cast Iron Suction Diffuser | ASTM A126-B | 2″ to 12” | Flanged
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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.
Cast Iron 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
• Available in sizes of 2” to 12″
• Direct mount to the suction side of a pump in either horizontal or vertical position
• All strainers supplied with removable Stainless Steel startup mesh over Stainless Steel perforated plate
• All sizes complete with O-ring sealed covers with knob bolts to minimize down time
• Drain connection with plug furnished as standard
• Temperatures to 212º F
• All encompassing strainer, flow straightener, elbow and pipe reducer for pump applications
• Flow turbulence reduced through integral straightening vanes for improved pump efficiency
• Cast Iron FF Flanges on all sizes
• Supporting pads for easy mounting of standard I.D. support foot

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 | |||||||||
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) |
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) |
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) |
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) |
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) |
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) |
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) |
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) |
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) |
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) |
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) |
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) |
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) |
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) |
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) |
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) |
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) |
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) |
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) |
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) |
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) |
For almost 15 years, ValvSource Equipment 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 Equipment 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 call ValvSource Equipment today or email us at [email protected].