OVERVIEW: The SF-IG cast iron, full body swing check valve is a proven, durable design that offers a flow path that is unobstructed for reduced head loss. Purchase costs are economical. It is ideal for preventing flow reversal which aids in protecting pumps, compressors, tanks, and other vessels. It can also be used to isolate high pressure systems from low pressure systems and to prevent contamination between systems.
The Buna-N soft seats and the precision machined sealing surfaces helps to ensure a drop-tight seal that meets AWWA C508. The Buna-N seal is well suited for most water, wastewater, and petroleum applications, with excellent compression set, tear, and abrasion resistance.
It is also available as the SF-IGA with adjustable weights and levers to prevent the disc from opening until a desired pressure is reached. Special coatings are available conforming to AWWA C508.
Acceptable for wastewater.
| MODEL | TYPE |
SIZE
(in)
|
ENDS | BODY MTL | SEAT | DISC | CLASS | Cv |
WT
(lbs)
|
A
(in)
|
B
(in)
|
ITEM NO |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SF-IG1 | NO LEVER & WEIGHT | 2 | 150# FLGS | CAST IRON | BUNA-N | IRON | 125 | 48 | 25.35 | 8.0 | 5.0 | VCSF-IG1IBT0200 |
| SF-IG1 | NO LEVER & WEIGHT | 2.5 | 150# FLGS | CAST IRON | BUNA-N | IRON | 125 | 76 | 36.38 | 8.50 | 5.40 | VCSF-IG1IBT0250 |
| SF-IG1 | NO LEVER & WEIGHT | 3 | 150# FLGS | CAST IRON | BUNA-N | IRON | 125 | 109 | 46.30 | 9.50 | 5.79 | VCSF-IG1IBT0300 |
| SF-IG1 | NO LEVER & WEIGHT | 4 | 150# FLGS | CAST IRON | BUNA-N | IRON | 125 | 198 | 55.12 | 11.50 | 6.54 | VCSF-IG1IBT0400 |
| SF-IG1 | NO LEVER & WEIGHT | 5 | 150# FLGS | CAST IRON | BUNA-N | IRON | 125 | 310 | 92.60 | 13.00 | 7.50 | VCSF-IG1IBT0500 |
| SF-IG1 | NO LEVER & WEIGHT | 6 | 150# FLGS | CAST IRON | BUNA-N | IRON | 125 | 446 | 110.0 | 14.00 | 8.55 | VCSF-IG1IBT0600 |
| SF-IG1 | NO LEVER & WEIGHT | 8 | 150# FLGS | CAST IRON | BUNA-N | IRON | 125 | 801 | 230.0 | 19.50 | 10.45 | VCSF-IG1IBT0800 |
| SF-IG1 | NO LEVER & WEIGHT | 10 | 150# FLGS | CAST IRON | BUNA-N | IRON | 125 | 1260 | 370.38 | 24.50 | 11.81 | VCSF-IG1IBT1000 |
| SF-IG1 | NO LEVER & WEIGHT | 12 | 150# FLGS | CAST IRON | BUNA-N | IRON | 125 | 1821 | 537.93 | 27.52 | 13.47 | VCSF-IG1IBT1200 |