หัวปรับแรงดันแก๊ส First Stage Pressure Regulator FISHER รุ่น 67CH
| Type | Size | Outlet Pressure | Flow Capacity |
| 67CH/742 | 1/4" x 1/4" FNPT | 30 to 60 psig | 700K BTU |
| 67CH/743 | 1/4" x 1/4" FNPT | 3 to 35 psig | 750K BTU |
| 67CH/751 | 1/4" x 1/4" FNPT | 3 to 20 psig | 675K BTU |