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Singer Valve - Model 106/206-A-Type 4 -One-Way Flow Altitude Control Valve with Differential Control

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The 106-A-Type 4 and 206-A-Type 4 altitude control valves are based on the 106-PG or 206-PG main valve, and are ideal for maintaining a preset maximum water level. The valve functions as a two position control valve, either fully open or fully closed. The Type 4 allows normal forward flow to fill the reservoir to the maximum level, then closes drip-tight at the set-point. It opens to refill the tank once the level drops an adjustable amount below the high water level. Distribution from the reservoir is through a separate pipeline.

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  • No overflows
  • Adjustable draw-down level (differential) set-point
  • Superior repeatability
  • Positive shut-off
  • Adjustable draw-down for improved water cycling
  1. Main Valve - 106-PG or 206-PG - with X107 position indicator
  2. Isolation Valve
  3. Strainer - 40 mesh stainless steel screen
  4. Closing Speed Control
  5. Model 301-4 Altitude Pilot
  6. Model 106-RD Differential Pilot
  7. Altitude Gauge - dual scale - feet and meter
  8. Isolation Valve
  9. Sensing connection to reservoir - complete in field
  10. Model 10 Check Valve
  11. Union
  12. Isolation Valve

Standard materials for pilot system components are:

  • Ductile Iron
  • Stainless Steel
  • Brass
  • Copper

106 / 206-A-Type 4 One-Way Flow Altitude Control Valve with Differential Control
  • The valve shall be a Singer Valve model 106-A-Type 4 / 206-A-Type 4, size “_____”, ANSI Class 150 (ANSI 300, ANSI flanges drilled to ISO PN 10 / 16/ 25 or 40) pressure rating / flange standard, globe (angle), style valve. The Model 301-4 Altitude Pilot spring range (elevation) shall be “___ to ___” feet / meters, with set-point preset at Singer Valve to “___” feet / meters. The Model 106-RD differential (delayed opening) range shall be “___” to “___” feet / meters, with set-point preset at Singer Valve to “___” feet / meters. Assembly shall be according to Schematic A-0415C.
  • The valve allows normal forward flow to fill the reservoir to the maximum level then closes drip-tight at the set-point. It opens to refill the tank once the level drops an adjustable distance below the high water level.
  • Refer to Main Valve section, see page 11, 106-PG (or 206-PG) and “Main Valve options” section, Model X107 Position Indicator for detailed information pertaining to valve sizes and materials, selection criteria and specifications.
  • Refer to Pilot and Accessories section, see page 249, Model 301-4 Altitude Pilot for detailed information pertaining to materials and specifications. Model 106-RD Pilot specification information, is available from Singer Valve only at this time.