HMI ™121 SERIES
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The HMI 121 Series Back Pressure Check Valve will allow any amount of flow, depending on line size, but closes if the flow is reversed or stopped. The flow is determined by the top female thread. This valve may also be used in other piping systems to limit the flow to one direction. These are normally closed valves. Flow is toward the male thread.
| CARBON STEEL | STAINLESS STEEL |
| PART NO. | PART NO. | ||
| 121-105/CS | 121-105/SS | ||
| 121-125/CS | 121-125/SS | ||
| 121-127/CS | 121-127/SS | ||
| 121-157/CS | 121-157/SS | ||
| 121-1510/CS | 121-1510/SS | ||
| 121-207/CS | 121-207/SS | ||
| 121-2010/CS | 121-2010/SS | ||
| 121-2012/CS | 121-2012/SS | ||
| 121-2510/CS | 121-2510/SS | ||
| 121-2512/CS | 121-2512/SS | ||
| 121-2515/CS | 121-2515/SS | ||
| 121-3010/CS | 121-3010/SS | ||
| 121-3012/CS | 121-3012/SS | ||
| 121-3015/CS | 121-3015/SS | ||
| 121-3020/CS | 121-3020/SS | ||
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