冬斯-压力调节器
FRI/6 平衡型压力调节器将压力调节器和 50 微米气体过滤器组合在一个外壳中。使用 FRI/6 与大多数 DMV 截止阀可以进行各种组合,以形成紧凑的模块化系统:
- 带螺纹法兰的单独式压力调节器和气体过滤器,或直接安装到 DMV 尺寸 701、702 和 703 系列安全截止阀上。
- 通过直接安装 A2 型压力开关监控调节器输出压力。检测入口和出口压力的附加端口也位于螺纹法兰上。
- 重型隔膜结构,具有耐用性和强度。
- 出口压力的稳定、精确和瞬时调节。
- 锁定式调节器(详见第 2 页和第 3 页)。
- 工厂安装的排气限制器。查看排气管要求的适用规范。
应用 FRI/6 压力调节器推荐用于工业和商业加热应用,适用于天然气、丙烷、丁烷、空气和惰性气体。适用于按体积计高达 0.1 % 的干燥 H2 S。
“干燥”气体的露低点低于 +15 °F,其相对湿度低于 60 %。
规格数据参数 | ||
Body sizes Flanges | FRI 705/6 - FRI 707/6 | FRI 710/6 - 712/6 |
1/2" - 1" NPT or Rp | 1" - 2" NPT or Rp | |
Max. operating pressure | 7 PSI (500 mbar) UL and CE | |
5 PSI (350 mbar) CSA | ||
Max. body pressure | 15 PSI (1000 mbar) | |
Input pressure range | 2 in. W.C. to 200 in. W.C. (5 mbar to 500 mbar) | |
Output pressure range | 1 in. W.C. to 60 in. W.C. (2.5 mbar to 150 mbar); adjustable with different springs Actual outlet pressure is +/- 15 % of set pressure (15 % hystersis/droop) | |
Materials in contact with gas | Housing: | Aluminium |
Seals and diaphragms: | NBR-based rubber | |
Ambient temperature rating | +5 °F to +150 °F for up to 7 PSI for regulating behavior (+/- 10 % of setpoint). | |
-40 °F to +150 °F: Diaphragms are suitable for the low temperature, but there may be out of range regulating behavior. | ||
CSA Certified for -40 °F to +150 °F for up to 5 PSI. | ||
-15 °C to +70 °C applies to the CE Marking. | ||
Installation position | Regulator dome from vertically upright to lying horizontally | |
Test ports/ Pressure switch mounting ports | One G 1/8 ISO 228 test ports on each side of regulator, sensing downstream pressure, and one on each inlet and outlet flange (if used as a stand alone regulator). | |
Gas filter (standard) | 50 micron; replaceable | |
Vent line / Back loading port/ Breathing plug | Vent line connection is G 1/4 ISO 228. The FRI also has a factory installed vent limiter, which limits the escape of gas to less than 0.5 CFH @ 5 PSI in case atmospheric diaphragm ruptures. Venting required unless otherwise accepted by the authority having jurisdiction. | |
Hysteresis/Droop | Hysteresis is less than 10 % for up to 7 PSI inlet. | |
Average droop at 20:1 turndown is 10 % for up to 7 PSI. |