可置換玻璃管，用于氣體或液體
指示高容量水平氣體或液體的流量刻度
刻度:127mm長
精度:±10%
量程：5-120L/M到20-500L/M空氣；0.5-8L/M到1-22L/M水
溫度限制:121°C
安裝:垂直
浮子:316SS
連接:3/8"內螺紋
分為銅質有閥、銅質無閥、不銹鋼質有閥、不銹鋼質無閥幾種
選型表:
| 無閥銅端件 | 有閥銅端件 | 有閥不銹鋼端件 | 流量（空氣）scfm(SLPM) | 流量（水）GPM(LPM) |
| DR4101 | DR4141 | DR4241 | 0.2-4 (5-120) | |
| DR4103 | DR4143 | DR4243 | 0.5-11 (20-320) | |
| DR4104 | DR4144 | DR4244 | 1-16 (20-500) | |
| DR4106 | DR4146 | DR4246 | 0.1-2 (0.5-8) | |
| DR4108 | DR4148 | DR4248 | 0.2-4 (1-16) | |
| DR4109 | DR4149 | DR4249 | 0.5-5 (1-22) |
| 無閥不銹鋼端件 | ||
| DR4201 | Stainless Steel, without Valve | 0.2-4 (5-120) Flow Rate (Air) |
| DR4201 | 0.2-4 (5-120) | |
| DR4203 | Stainless Steel, without Valve | 0.5-11 (20-320) Flow Rate (Air) |
| DR4203 | 0.5-11 (20-320) | |
| DR4204 | 1-16 (20-500) | 1-16 (20-320) Flow Rate (Air) |
| DR4204 | Stainless Steel, without Valve | 1-16 (20-320) Flow Rate (Air) |
| DR4206 | 0.1-2 (0.5-8) | |
| DR4206 | Stainless Steel, without Valve | |
| DR4208 | Stainless Steel, without Valve | |
| DR4208 | 0.2-4 (1-16) | |
| DR4209 | Stainless Steel, without Valve | |
| DR4209 | 0.5-5 (1-22) | |
| DR4241 | Stainless Steel, with Valve | 0.2-4 (5-120) Flow Rate (Air) |
| DR4243 | Stainless Steel, with Valve | 0.5-11 (20-320) Flow Rate (Air) |
| DR4244 | Stainless Steel, with Valve | 1-16 (20-320) Flow Rate (Air) |
| DR4246 | Stainless Steel, with Valve | |
| DR4248 | Stainless Steel, with Valve | |
| DR4249 | Stainless Steel, with Valve |
