冬斯-壓力調節(jié)器
FRI/6 平衡型壓力調節(jié)器將壓力調節(jié)器和 50 微米氣體過濾器組合在一個外殼中。使用 FRI/6 與大多數 DMV 截止閥可以進行各種組合，以形成緊湊的模塊化系統(tǒng)：
- 帶螺紋法蘭的單獨式壓力調節(jié)器和氣體過濾器，或直接安裝到 DMV 尺寸 701、702 和 703 系列安全截止閥上。
- 通過直接安裝 A2 型壓力開關監(jiān)控調節(jié)器輸出壓力。檢測入口和出口壓力的附加端口也位于螺紋法蘭上。
- 重型隔膜結構，具有耐用性和強度。
- 出口壓力的穩(wěn)定、精確和瞬時調節(jié)。
- 鎖定式調節(jié)器（詳見第 2 頁和第 3 頁）。
- 工廠安裝的排氣限制器。查看排氣管要求的適用規(guī)范。
應用 FRI/6 壓力調節(jié)器推薦用于工業(yè)和商業(yè)加熱應用，適用于天然氣、丙烷、丁烷、空氣和惰性氣體。適用于按體積計高達 0.1 % 的干燥 H2 S。
“干燥”氣體的露低點低于 +15 °F，其相對濕度低于 60 %。
| 規(guī)格數據參數 | ||
| 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. | ||
