SERIES 700

SUMMARY OF MODELS AND STYLES

TOP INSERTED FLOAT ACTUATED LEVEL SWITCHES

Operation: A float is carried up and down by variations in liquid level or interface position.
                     One or more switch actions occur at selected level positions.

Delta Controls Model 709 Alarm

• Uses: Provide high or low level alarm or interface position
• Insertion: Up to 10 feet (3m) below the flange face
• Switch Action: Single point
• Specific Gravity: From 0.35 to 2.40 SGU
• Temperature: From –150 to 750°F (-100 to +400° C)
• Pressure: From –15 to 1200 PSIG (-1 to +80 BAR)
• Process Connection: 1" to 4" NPT threaded; 1" to 12" flanged, up to 900# rating; ASA, DIN or JIS equivalent

Delta Controls Multiswitch Models 710 and 711

• Uses: Provide high and / or low level alarm, pump control, etc.
• Insertion: Up to 10 feet below the flange face
• Switch Action: From 1 to 4 points of alarm and/or differential; up to 60" differential available with Type 711
• Specific Gravity: From 0.35 to 2.40 SGU
• Temperature: From –150 to 750°F (-100 to +400° C)
• Pressure: From –15 to 1200 PSIG (-1 to +80 BAR)
• Process Connection: 1" to 4" NPT threaded; 1" to 12" flanged, up to 900# rating; ASA, DIN or JIS equivalents

TOP INSERTED DISPLACER ACTUATED LEVEL SWITCHES

Operation: The weight of a displacer is supported by a spring. Variations in liquid level cause the displacer to move up and down. Switching action occurs as the level passes each displacer.

Delta Controls Model 715 Alarm

• Uses: High or low alarm for liquid level or interface position
• Insertion and Switching band: up to 50 feet (15m) maximum
• Switch action: Single point alarm
• Specific Gravity: form 0.25 to 2.4 SGU
• Temperature from –20 to 500°F (-30 to +260° C)
• Pressure: from –15 to 2200 PSIG (-1 to +155 BAR)
• Process Connection: 2" to 4" NPT threaded; 2" to 12" flanged up to 1500# rating; ASA, DIN, or JIS equivalents

Delta Controls Model 716, 717, 718 Multiswitch

• Uses: High and/or low alarm; single and multiple pump control
• Insertion and Switching band: up to 50 feet (16 m) maximum
• Switch action: From 1 to 4 points of alarm and/or on-off pump control
• Specific Gravity: form 0.25 to 2.4 SGU
• Temperature from –20 to 500°F (-30 to +260° C)
• Pressure: from –15 to 2200 PSIG (-1 to +155 BAR)
• Process Connection: 3" to 4" NPT threaded; 3" to 12" flanged up to 1500# rating; ASA, DIN, or JIS style

SIDE INSERTED FLOAT OR DISPLACER ACTUATED LEVEL SWITCHES

Operation: A solid displacer or heavy-duty float is supported by a pivot shaft and counterweight. Single point alarm switching action occurs as the liquid level or interface position crosses the center line of the body.
Uses: High and low alarm for level, interface position, and sequencing

Delta Controls Model 735 Alarm
NPT Process Connection

• Insertion: 14 inches basic
• Specific Gravity: 0.6 to 2.4
• Temperature: -85 to 1000°F (-60 to +540° C)
• Pressure: –15 to 2250 PSIG (-1 to +155 BAR)
• Process Connection:1" to 3" threaded, 1 ½" to 4" flanged, up to 900# rating, ASA, DIN, JIS

Delta Controls Model 735 Alarm
Flanged Process Connection

• Insertion: 12 to 24 inches
• Specific Gravity: 0.15 to 2.4
• Temperature: -85 to 1000°F (-60 to +540° C)
• Pressure: –15 to 3600 PSIG (-1 to +250 BAR)
• Process Connection: 2" to 12" flanged, up to 1500# rating, ASA, DIN, JIS, any facing

Delta Controls Model 740 Two Point Alarm or Differential Pump Control

• Operation: A pivoted float rides on the liquid level or interface position. Two switch actions occur as the elevation varies.
• Uses: Two point alarm or on-off pump control
• Specific Gravity: 0.4 to 2.4
• Temperature: -50 to 750°F (-47 to +400° C)
• Pressure: -15 to 750 PSIG (-1 to +50 BAR)
• Process Connection: 3" NPT threaded, 3" to 12" flanged, up to 600# rating, ASA, DIN, JIS
  

Delta Controls Model 750 Float or Displacer
Level or Interface Alarm

• Operation: The weight of a displacer or heavy-duty float is supported by a counterweight and a pivot shaft. Switching occurs as the level (interface) crosses the body centerline.
• Specific Gravity: 0.23 to 2.4
• Temperature: -200 to 1100°F (-130 to +650° C)
• Pressure: –15 to 6000 PSIG (-1 to +410 BAR)
• Process Connection: Top/Bottom or other
  ½", ¾", or 1" NPT or Socket Weld
  ½" to 2" flanged, 600#, ANSI
  ½" to 1" flanged, 1500#, ANSI
  ½" to 2" hubs, 10,000#, Greyloc

Delta Controls Model 760 and 762 Alarm with Vertically Rising Element

• Operation: A float or displacer moves up and down as the liquid level (interface) varies. Switch action occurs at a preset elevation
• Switching: Single alarm
• Specific Gravity: 0.35 to 2.4
• Temperature: -100 to 800°F (-70 to +430° C)
• Pressure: –15 to 20,000 PSIG (-1 to 1400 BAR)
• Process Connection:
  SB or SSB style
  ½", ¾", or 1" NPT, stub, or S. W.
  ½" to 2" flanged, to 2500#, ANSI
  2" Greyloc clamp hubs

Model
765

Model
767

Model
770

Delta Controls Model 765, 767, and 770
Differential Control or Multiswitch

• Operation: A float with a long stroke action moves up and down as the liquid level varies. Switching occurs at up to four separate points.
• Switching Stations: 1 to 4; alarm and/or differential
• Differential: up to 72"
• Specific Gravity: 0.4 to 2.4
• Temperature: -20 to 750°F (-30 to +400° C)
• Pressure: -15 to 2200 PSIG (-1 to +155 BAR)
• Process Connection: Same as type 760

Delta Controls Model 763 With Displacer Element

• Operation: A counterweighted horizontal pivoting element operates an output switch as the liquid level or interface crosses the body centerline.
• Uses: Steam drums, condensate trap drains, Dowtherm®, etc.
• Switch Action: Single point alarm
• Specific Gravity: 0.3 to 2.4 units
• Interface Differential: 0.1 unit minimum
• Temperature: -350 to 1100°F (-200 to +600° C)
• Pressure: -15 to 6000 PSIG (-1 to +415 BAR)
• Process Connection: 1", 1 ½", or 2" butt, stub, or socket weld; ANSI flanges or Greyloc hub

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