Series 215/217/218 Flanged Chamber Level Control

Adjustable Deadband 12" to 24", Pressure to 450 psig (31 bar), Temperature to 500°F (260°C)

Adjustable deadband, flanged chamber and side mount are featured in the heavy duty reliable 215 series. A choice of four operating styles are offered: 1. Single stage adjustable deadband suitable for pump operation; 2. Two stage operation with adjustable lower stage, fixed upper stage for pump and high alarm; 3. Fixed lower stage and adjustable upper stage for pump and low alarm; 4. Fixed upper and lower stage for high and low alarm. Alarm stages can also be used for shutdown. Adjustable level changes are available in increments of 12", 24", 36", or 48".

Product Applications

  • Oil Refineries
  • Chemical Plants
  • Power Generating Stations
  • Pumping Stations
  • Heat Transfer Systems
  • Sanitary/Wastewater Facilities
  • Drip Legs
  • Hydraulic Systems
  • Boilers

Models & Ordering

Shipping Information

All shipping times are dependent on product availability at time of shipment.

Although we make every effort to ensure a continuous supply of our products, occasional circumstances may force us to temporarily run out of a product, or have shipping delays. Should this occur, customers will be notified soon after placement of any orders for such products and, if applicable, items will be put on backorder. For orders requiring expedited shipment, our customer service team can be contacted to confirm product availability

Build Your Custom Part. Use our Product Configurator


Minimum Specific Gravity:
Temperature Limit:
Ambient Temperature: 212°F (100°C); Process Temperature: up to 500°F (260°C).
Switch Type:
Snap action or mercury. See Model Chart.
Electrical Ratings:
See Model Chart.
Wiring Connections:
G, WT or E enclosure, terminal block. EV enclosure, 18" (460 mm) leads.
Process Connections:
1" NPT standard (1" socket weld hubs or flanges optional).
G: painted steel and aluminum; WT: painted steel, aluminum, neoprene; E: aluminum; EV: aluminum and neoprene.
Wetted Parts:
C1 construction. Chamber, carbon steel. Float and trim 303SS, 304SS, 430SS.
215: 50 lb (22.7 kg); 217: 60 lb (27 kg); 218: 67 lb (30.4 kg).
Suggested Specifications:
Liquid level control shall be 215 (217) (218) Series with adjustable deadband of (12") (24") (36") (48"). Unit shall be external side mount type. Process connections shall be 1" NPT (socket weld hub) (flanged). Suitable for operation at 450 psig (31 bar) and 100°F (38°C); 300 psig (21 bar) at 500°F (260°C) with a minimum specific gravity of 0.60. Switch mechanism shall be gravity return and shall be activated by a stainless steel float.

Model Chart

EXAMPLE 215 2 WT 7810-10 C1 60   L12 215-2-WT-7810-10-C1-60-L12 Level Control, flanged carbon steel chamber, weatherproof enclosure, (2) SPDT snap action switches, lower stage adjustable deadband, upper stage fixed deadband, operating pressure 450 psig @ 100°F, side/bottom 1" NPT process connections, minimum s.g. 0.60.
CONNECTION 215               One Horizontal and One Vertical 1" NPT
217               One Vertical and One Horizontal Flanged Connection
218               Two Vertical Flanged Connections
DEADBAND   1             Single Stage Operation, with Adjustable Deadband
  2             Two Stage Operation, Lower Stage has Adjustable Deadband, Upper Stage has Fixed Deadband
  3             Two Stage Operation, Lower Stage has Fixed Deadband, Upper Stage has Adjustable Deadband
  4             Two Stage Operation, Both Stages have Fixed Deadband with Adjustable Spread Between Stages
ENCLOSURE      G           General Purpose, NEMA 1
    WT           Weatherproof, NEMA 3R, 4, 4X
    E           Explosion-proof, NEMA 7, 9, Class I Groups B, C, D, Class II Groups E, F, G
    EV           Explosion-proof/Vapor-proof, NEMA 7, 9, Class I Groups B, C, D, Class II Groups E, F, G
(for electrical circuits
see charts A & B below)
      48XX         Single Stage Mercury Switch, see chart A
      48XX-XX         Two Stage, Mercury Switch, see chart A
      78XX         Single Stage, Snap Switch, see chart B
      78XX-XX         Two Stage, Snap Switch, see chart B
      78XXHM         Hermetically Sealed Snap Switch, see chart B
      98XX         Single Stage, High Capacity DC Snap Switch, use heat fins (HF) if process temperature exceeds 350°F (177°C), do not exceed 450°F (232°C), see chart B
      98XX-XX         Two Stage, High Capacity DC Snap Switch, use heat fins (HF) if process temperature exceeds 350°F (177°C), do not exceed 450°F (232°C), see chart B
CHAMBER MATERIAL         C1       Carbon Steel Body
        C216       316SS Body
        HFC1       Heat Fins & Carbon Steel Body
        HFC216       Heat Fins & 316SS Body (215 only)
          60     0.60 Specific Gravity (215 only)
          160     0.60 Specific Gravity & 150# Flange (217, 218 only)
          360     0.60 Specific Gravity & 300# Flange (217, 218 only)
          660     0.60 Specific Gravity & 600# Flange (217, 218 only)
            L12   Adjustable Level Change
            L24   Adjustable Level Change
            L36   Adjustable Level Change
            L48   Adjustable Level Change
OPTIONS               H2 H2 Socket Weld Hub (215, steel housing only)
              STW Stainless Steel Tag Wired
              01 Breather Only (E-Housing only)
              02 Drain Only (E-Housing only)
              12 Breather & Drain (E-Housing only)
              23720 Fungus Proofing

120V 240V 440V 30V 125V 250V LOWER UPPER
Mercury Contacts
SP-ST open on level FALL 10 5 3†   10 5 -4820 -4820 -21
SP-ST open on level RISE 10 5 3†   10 5 -4821 -4821 -20
SP-DT one switch 4 2 1†   4 2 -4810 -4810 -10
SP-DT two switches E.I.* 10 5 3†   10 5 -4815 -4815 -15
DP-ST two switches E.I.* open on level FALL 10 5 3†   10 5 -4814 -4814 -13
DP-ST two switches E.I.* open on level RISE 10 5 3†   10 5 -4813 -4813 -14
DP-DT two SP-DT switches 4 2 1†   4 2 -4806 -4806 -06
snap action contacts
SP-DT one switch 12 5 3†   0.5** 0.25** -7810 -7810 -10
DP-DT two SP-DT switches 12 5 3†   0.5** 0.25** -7806 -7806 -06
SP-DT one hermetically sealed switch 5 5   5**     -7810HM -7810HM -10HM
DP-DT two hermetically sealed SP-DT switches 5 5   5**     -7806HM -7806HM -06HM
DP-DT two SP-DT switches 10 3     10‡ 3‡ -9806 -9806 -06
SP-DT one switch 10 3     10‡ 3‡ -9810 -9810 -10
†Available on special order, change 1st digit in ordering code from 4 to 5 or 7 to 8, i.e., -4820 becomes -5820, -7810 becomes -8810, etc.
‡10 amp inductive (polarized) at 125 VDC.
*Electrically Independent.

Product Literature


Catalog Pages





Why is the minimum specific gravity important on the float level switches?
If a medium has a lower s.g. than the rated minimum for a float, the float will sink through the media and the switch will not operate.

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