The Sanitary Cartridge Valve (SC) is a stainless steel check valve for use in new or existing sanitary systems. The SC design seals on the ID of sanitary ferrules with replaceable food grade seals (Standard is FDA EPDM). The valves fits the Alfa Laval Inc. Bevel Seat and Tri-Clamp® fittings, the Waukesha Cherry Burrell® Q-Line and S-Line fittings, and others with ID dimensions equal to the “F” dimension listed in the Sizes & Dimensions. The compact SC design fits inside a single fitting and requires no additional space in the line. Its size makes it extremely economical when compared to full-bodied valves. Choose from Check-All’s broad selection of Seat Materials Cracking Pressure Options that allow this series to be used as a check valve, relief valve, or a vacuum breaker.
Note: USP Class VI o-rings can be supplied with certification.
PED Compliance Statement: Due to the unique “insert” design of our 3S, SC, CB, TC, SI, & UV, style check valves, they do not constitute an “identifiable pressure bearing housing” as defined in PED Guideline 1/8. These styles must be installed into either ferrules or fittings to create a pressure bearing housing. Instead, they are classified as “components of pressure equipment” as defined in PED Guideline 1/8. As a result, these valves can be sold in the European Community and no CE Mark is required.
| Line Size | Size Code | A | B | C** | D** | E | F*** | Orifice Diameter |
|---|---|---|---|---|---|---|---|---|
| 3/4 | F | 3/4 | 1/16 | 0.44 | 0.78 | 0.28 | 0.620 | 0.348 |
| 1 | H | 1 | 1/16 | 0.53 | 0.89 | 0.30 | 0.870 | 0.464 |
| 1-1/2 | J | 1-1/2 | 1/16 | 0.53 | 1.06 | 0.63 | 1.370 | 0.890 |
| 2 | K | 2 | 1/16 | 0.66 | 1.39 | 0.66 | 1.870 | 1.135 |
| 2-1/2 | L | 2-1/2 | 1/16 | 0.69 | 1.56 | 0.88 | 2.370 | 1.385 |
| 3 | M | 3 | 1/16 | 0.75 | 1.97 | 1.25 | 2.870 | 2.025 |
| 4 | N | 4 | 1/16 | 0.88 | 2.41 | 1.63 | 3.834 | 2.560 |
NOTES (DIMENSIONS TABLE)*Maximum nominal dimension for valve closed.
**Maximum nominal dimension for a fully open valve.
***Valves are designed to function with fittings having these internal diameters. (±0.005)
Consult factory for more information.
- 316 Stainless Steel (SS)
| Body Material | Line Size | Non-Shock Pressure Temperature Rating |
|---|---|---|
| 316/316L Stainles Steel (SS) | 3/4" - 1½" | 1000 psig @ 100 °F |
| 2" - 4" | 725 psig @ 100 °F |
Seat material and spring material selection may limit the recommended service temperature.
See seat ratings, spring ratings, and body material ratings for their respective recommended service temperatures.
Consult the factory for reduced P-T rating above 100 °F. Standard spring material is 316 Stainless Steel.
PRESSURE DROP PSI
| Size | Cv |
|---|---|
| 3/4 | 2.4 |
| 1 | 4.6 |
| 1-1/2 | 9.5 |
| 2 | 20.9 |
| 2-1/2 | 37.0 |
| 3 | 77.9 |
| 4 | 141 |
FOR WATER AT 72°F
WATER FLOWRATE - GPM
Note: All flow curves and Cv values presume the valves are fully open with 1/2 PSI cracking pressure springs. Consult the factory for more information.
| SIZE | PART NUMBER | 316 SS |
|---|---|---|
| 3/4 | SCF | 0.3 oz. |
| 1 | SCH | 1.0 oz. |
| 1-1/2 | SCJ | 2.9 oz. |
| 2 | SCK | 6.1 oz |
| 2-1/2 | SCL | 11.2 oz. |
| 3 | SCM | 11.4 oz. |
| 4 | SCN | 2.6 lb. |
Valve weight are approximate.
| Valve Style | Size Range | Body Materials Other Options |
Allowable Seat Materials Other Options |
Standard Cracking Pressures Other Options More Info. |
Standard Spring Material More Info. |
|---|---|---|---|---|---|
| SC | 3/4" - 2" | 316 SS | AFLAS® Buna-N FDA AFLAS® FDA Buna-N EPDM/FDA EPDM FDA Viton® Kalrez® "Metal to Metal" Neoprene PTFE USP Class VI EPDM USP Class VI Silicone USP Class VI Viton® Viton® |
1/8 PSI 1/2 PSI 1.5 PSI 3.5 PSI |
316 SS |
| SC | 2-1/2" - 4" | 316 SS | AFLAS® Buna-N FDA AFLAS® FDA Buna-N EPDM/FDA EPDM FDA Viton® Kalrez® "Metal to Metal" Neoprene PTFE USP Class VI EPDM USP Class VI Silicone USP Class VI Viton® Viton® |
1/8 PSI 1/2 PSI 1.5 PSI |
316 SS |
For additional information about Check Valves
What is a Silent Check Valve?
What is a Spring Loaded Check Valve?
What is a Poppet Check Valve?
What is an Inline Check Valves?