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Mercoid 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)

Series 215Adjustable 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". Download Catalog Page

  • Oil refineries
  • Chemical plants
  • Power generating stations
  • Pumping stations
  • Heat transfer systems
  • Sanitary/waste water facilities
  • Drip legs
  • Hydraulic systems
  • Boiler

 

Specifications:

Minimum Specific Gravity: 0.60.
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).
Enclosures: 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.
Weight: 215: 50 lb (22.7 kg); 217: 60 lb (27 kg); 218: 67 lb (30.4 kg).
Model Chart (click to open/close)
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
CIRCUITS
(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
MINIMUM
SPECIFIC
GRAVITY
          60   0.60 Specific Gravity
          160   0.60 Specific Gravity & 150# Flange
          360   0.60 Specific Gravity & 300# Flange
          660   0.60 Specific Gravity & 600# Flange
OPTIONS             H2 H2 Socket Weld Hub
            L12 Adjustable Level Change
            L24 Adjustable Level Change
            L36 Adjustable Level Change
            L48 Adjustable Level Change
            R Manual Reset, Single Stage
            R1 Manual Reset, Lower Stage 2-Stage Control
            R2 Manual Reset, Upper Stage 2-Stage Control
            R3 Manual Reset, Both Stages 2-Stage Control
            STW SS Tag Wired
            01 Breather Only
            02 Drain Only
            12 Breather & Drain
            23720 Fungus Proofing
 
Charts A & B - Electrical Circuits and Ratings (click to open/close)
SWITCH TYPE
SWITCH ACTION
ELECTRICAL RATINGS IN AMPS
ORDERING CODE
AC
DC
SINGLE STAGE
TWO STAGE
120V
240V
440V
30V
125V
250V
LOWER
UPPER
CHART A
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
CHART B
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
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