| 2050LA02 | Designed for double acting cylinders, available with various body materials and operational modes | Parker Hannifin | | |
| 2051BA02 | Heavy-duty operation. for single acting cylinders or diaphragms valves. lubricated or dry air-gas, water, light oil | Parker Hannifin | | |
| 2051BA03 | Heavy-duty operation. for single acting cylinders or diaphragms valves. lubricated or dry air-gas, water, light oil | Parker Hannifin | | |
| 2051BA04 | Heavy-duty operation. for single acting cylinders or diaphragms valves. lubricated or dry air-gas, water, light oil | Parker Hannifin | | |
| 2051LA02 | Heavy-duty operation. for single acting cylinders or diaphragms valves. lubricated or dry air-gas, water, light oil | Parker Hannifin | | |
| 2051LA03 | Heavy-duty operation. for single acting cylinders or diaphragms valves. lubricated or dry air-gas, water, light oil | Parker Hannifin | | |
| 2051LA04 | Heavy-duty operation. for single acting cylinders or diaphragms valves. lubricated or dry air-gas, water, light oil | Parker Hannifin | | |
| 2051SA02 | Heavy-duty operation. for single acting cylinders or diaphragms valves. lubricated or dry air-gas, water, light oil | Parker Hannifin | | |
| 2051SA03 | Heavy-duty operation. for single acting cylinders or diaphragms valves. lubricated or dry air-gas, water, light oil | Parker Hannifin | | |
| 2051SA04 | Heavy-duty operation. for single acting cylinders or diaphragms valves. lubricated or dry air-gas, water, light oil | Parker Hannifin | | |
| 2054-100 | 4" valve for ammonia and ecological refrigerants | Parker Hannifin | | |
| 2054-20 | 3/4" valve for ammonia and ecological refrigerants | Parker Hannifin | | |
| 2054-25 | 1" valve for ammonia and ecological refrigerants | Parker Hannifin | | |
| 2054-32 | 1.1/4" valve for ammonia and ecological refrigerants | Parker Hannifin | | |
| 2054-40 | 1.1/2" valve for ammonia and ecological refrigerants | Parker Hannifin | | |
| 2054-50 | 2" valve for ammonia and ecological refrigerants | Parker Hannifin | | |
| 2054-60 | 2.1/2" valve for ammonia and ecological refrigerants | Parker Hannifin | | |
| 2054-70 | 3" valve for ammonia and ecological refrigerants | Parker Hannifin | | |