Series 225/227/228 Flanged Chamber

Adjustable Deadband 12" to 24", Pressure to 1000 psig (68.9 bar), Temperature to 475°F (246°C), Hermetically Sealed Switches

Adjustable deadband, flanged chamber and side mount are featured in the heavy duty reliable 225 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", and 48".

Product Applications

  • Oil refineries, chemical plants, power generating stations, pumping stations, heat transfer systems, sanitary/waste water facilities, drip legs, hydraulic systems, boilers.

Models & Ordering

Build Your Custom Part. Use our Product Configurator

Specifications

Minimum Specific Gravity:
0.75.
Temperature Limit:
Ambient Temperature: 212°F (100°C); Process Temperature: up to 475°F (246°C).
Switch Type:
Snap action or mercury. See charts A and B.
Electrical Ratings:
See charts A and B.
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).
Enclosure Rating:
See model chart.
Enclosure:
> 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:
225, 50 lb (22.7 kg); 227, 60 lb (27 kg); 228, 67 lb (30.4 kg).
Agency Approvals:
UL.
Suggested Specifications:
Liquid level control shall be 225 (227) (228) 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 1000 psig (68.9 bar) at 100°F (38°C); 850 psig (21 bar) at 475°F (246°C) with a minimum specific gravity of 0.75. Switch mechanism shall be gravity return and shall be activated by a stainless steel float.

Model Chart

 
EXAMPLE 225 1 G 4810 C1 0.75 L12 Series 225-1-G-4810-C1-75-L12 Liquid Level Control, general purpose enclosure, carbon steel body, SPDT, 0.75 specific gravity, 3" 125# cast iron flange, with adjustable level change.
SERIES 225
227
228
            Liquid Level Control
Liquid Level Control
Liquid Level Control
CALIBRATION
INSTRUCTIONS
  1
2
3
4
          Calibration Instructions 1
Calibration Instructions 2
Calibration Instructions 3
Calibration Instructions 4
ENCLOSURE     G
WT
E
EV
        General Purpose NEMA 1
Watertight NEMA-4, 4X
Explosion-proof NEMA 7, 9
Explosion-proof/Vapor-proof NEMA 7, 9
CIRCUITS       48XX
78XX
78XXHM
98XX
      See Chart A below
See Chart B below
See Chart B below
See Chart B below
CHAMBER MATERIAL         C1
C216
HFC1
    Carbon Steel Body
316 SST Body
Heat Fins Carbon Steel Body
SPECIFIC GRAVITY           75
80
175
180
375
380
675
680
  0.75 S.G.                        (225 ONLY)
0.80 S.G.                        (225 ONLY)                       
0.75 S.G. 150# Flange     (227, 228 ONLY)
0.80 S.G. 150# Flange     (227, 228 ONLY)
0.75 S.G. 300# Flange     (227, 228 ONLY)
0.80 S.G. 300# Flange     (227, 228 ONLY)
0.75 S.G. 600# Flange     (227, 228 ONLY)
0.80 S.G. 600# Flange     (227, 228 ONLY)
OPTIONS             H2
L12
L24
L48
R
R1
R2
R3
STW
01
02
12
23720
H2 Socket Weld Hub       (225, Steel Housing ONLY)
Adjustable Level Change
Adjustable Level Change
Adjustable Level Change
Manual Reset Sgl Stage
Manual Reset Lower Stage 2-Stage Controls
Manual Reset Upper Stage 2-Stage Controls
Manual Reset Both Stages 2-Stage Controls
SS Tag Wired
Breather Only                   (E-Housing ONLY)
Drain Only                         (E-Housing ONLY)
Breather and Drain            (E-Housing ONLY)
Fungus Proofing Special 23720

 
  CHARTS A & B - ELECTRICAL CIRCUITS AND RATINGS
SWITCH TYPE
 
SWITCH ACTION
 
ELECTRICAL RATINGS IN AMPS ORDERING CODE  
AC DC SINGLE STAGE TWO STAGE  
120V 240V 440V 125V 250V   LOWER UPPER  
CHART A
Mercury Contacts
SP-ST open on level FALL 10 5 3† 10 5 -4821 -4821 -21 UL
SP-ST open on level RISE 10 5 3† 10 5 -4820 -4820 -20 UL
SP-DT one switch 4 2 1† 4 2 -4810 -4810 -10 UL
SP-DT two switches E.I.* 10 5 3† 10 5 -4815 -4815 -15 UL
DP-ST two switches E.I.* open on level FALL 10 5 3† 10 5 -4813 -4813 -13 UL
DP-ST two switches E.I.* open on level RISE 10 5 3† 10 5 -4814 -4814 -14 UL
DP-DT two SP-DT switches 4 2 1† 4 2 -4806 -4806 -06 UL
CHART B
snap action contacts
SP-DT one switch 12 5 3† 0.5** 0.25** -7810 -7810 -10 UL
DP-DT Two SP-DT switches 12 5 3† 0.5** 0.25** -7806 -7806 -06 UL
SP-DT One hermetically sealed SPDT switch  5 5       -7810HM -7810HM -10HM  
DP-DT Two hermetically sealed SPDT switches  5 5       -7806HM -7806HM -06HM  
DP-DT two SPDT switches 10 3   10‡ 3‡ -9806 -9806 -06  
SP-DT one switch 10 3   10‡ 3‡ -9810 -9810 -10  
DP-DT Two SPDT switches 2 2   0.4** 0.25** -1006 -1006 -06  
SP-DT one switch 2 2   0.4** 0.25** -1010 -1010 -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.
**Resistive.     ◊ 30 VDC = 5 Resistive


CHART C - MOUNTING STYLE

SERIES
MOUNTING
STYLE
MINIMUM
SPECIFIC
GRAVITY
PRESSURE RATING AT
FLANGE
CLASS
psi)
ORDER
CODE
100°F
38°C
475°F
246°C
225
1" NPT
0.75
600 psi
(41 bar)
550 psi
(34 bar)
--
C1-75
225
1" NPT
0.80
1000 psi
(69 bar)
750 psi
(52 bar)
--
C1-80
227
228
Flanged
0.75
275 psi
(19 bar)
100 psi
(7 bar)
150
C1-175
227
228
Flanged
0.80
275 psi
(19 bar)
100 psi
(7 bar)
150
C1-180
227
228
Flanged
0.75
600 psi
(41 bar)
425 psi
(29 bar)
300
C1-375
227
228
Flanged
0.80
720 psi
(50 bar)
425 psi
(29 bar)
300
C1-380
227
228
Flanged
0.75
600 psi
(41 bar)
500 psi
(34 bar)
600
C1-675
227
228
Flanged
0.80
1000 psi
(69 bar)
750 psi
(52 bar)
600
C1-680

Product Literature

Manuals

Catalog Pages

SDS

Approvals

Questions

Question
Why is the minimum specific gravity important on the float level switches?
Answer
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.

Photo Downloads

You must be logged in to view this content.
Click here to login to your account.