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DWYER 221/223/224

Photo DWYER 221/223/224 Description DWYER 221/223/224 Specifications DWYER 221/223/224 Model Chart DWYER 221/223/224 User Manual for DWYER 221/223/224 Related instruments to DWYER 221/223/224

DWYER 221/223/224 flanged chamber level control

DWYER 221/223/224 flanged chamber level control

Heavy duty flanged chamber features removable float for ease of inspection and maintenance. The 221 Series also provides 1″ NPT for standard external mounting. Socket weld hubs or flanges are optional. Rugged C1-75 construction is suitable for operation at 1000 psi (69 bar) at 100°F (38°C), and 850 psig (59 bar) at 475°F (246°C) with a minimum specific gravity of 0.75. C1-60 construction is suitable for operation at 600 psig (41 bar) at 100°F (38°C), and 550 psig (38 bar) at 475°F (246°C) with a minimum specific gravity of 0.60. Models featured can be ordered with various circuits including SPST, SPDT, or DPDT with hermetically sealed snap action or mercury contacts. A full range of enclosures are available including general purpose, weatherproof, explosion-proof, or explosion-proof – vapor proof.

			

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Made in USA. brand DWYER, model 221/223/224

International delivery to Europe, Asia and Africa.
Our warehouses are located in the UK, UAE and Senegal.

price by request

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Available

Founded in 1931, DWYER manufactures equipment for measurement, conversion and control – pressure, temperature, level, flow.

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We take care of all logistics and customs clearance of I&C solutions from Europe, USA, China and India

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Description of DWYER 221/223/224

PRODUCT APPLICATIONS

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

Technical specifications of DWYER 221/223/224

  • C1-60: Minimum specific gravity 0.60; Process pressure 600 psig (41 bar) at 100°F (38°C), 550 psig (38 bar) at 475°F (246°C).
  • C1-75: Minimum specific gravity 0.75; Process pressure 1000 psig (69 bar) at 100°F (38°C), 850 psig (59 bar) at 475°F (246°C).
  • Temperature Limit: Ambient Temperature: 212°F (100°C); Process Temperature: up to 475°F (246°C).
  • Switch Type: Snap action or mercury switch.
  • Electrical Rating: See Model Chart.
  • Wiring Connections: G, WT or E enclosure, terminal block. EV enclosure, 18″ (460 mm) leads.
  • Process Connections: 1″ NPT standard (socket weld hubs or flanges optional). See Model Chart.
  • Enclosures: G, painted steel and aluminum. WT, painted steel, aluminum and neoprene. E, aluminum. EV, aluminum and neoprene.
  • Wetted Parts: Chamber, carbon steel. Trim 316SS, 303SS, 304SS and 430SS.
  • Weight: 221: 60 lb (27 kg); 223: 70 lb (32 kg); 224: 77 lb (35 kg).
  • Suggested Specifications: Liquid level control shall be 221 (223) (224) Series with flanged carbon steel chamber, and removable float. Process connections shall be 1″ NPT (socket weld hubs) (flanged). Control shall be suitable for operation at 600 psig (41 bar) at 100°F (38°C), and 550 psig (38 bar) at 475°F (246°C) with a minimum specific gravity of 0.60 (C1-60); or 1000 psig (69 bar) at 100°F (38°C), and 850 psig (59 bar) at 475°F (246°C) with a minimum specific gravity of 0.75 (C1-75). Circuit shall be (hermetically sealed) snap action (mercury) switch (SPST) (SPDT) (DPDT) with fixed deadband. Switch mechanism shall be gravity return and shall be activated by a stainless steel float. Enclosure shall be gen eral purpose, (weatherproof) (explosion-proof) (explosionproof – vapor proof).

Model Chart DWYER221/223/224

EXAMPLE 221 WT 7810 C1 60 221-WT-7810-C1-60 Liquid Level Control, weatherproof enclosure, SPDT snap switch, fixed deadband, automatic reset, operating pressure 600 psig (41 bar) at 100°F (38°C), 550 psig (38 bar) at 475°F (246°C), side/bottom process connections, 1″ NPT, minimum specific gravity 0.60.
CONNECTION 221 One Vertical and One Horizontal 1″ NPT
223 One Vertical and One Horizontal Flanged Connection
224 Two Vertical Flanged Connections
224T
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. CSA approved Groups C, D, E, F, G only.
EV Explosion-proof/Vapor-proof, NEMA 7, 9, Class I Groups B, C, D, Class II Groups E, F, G. CSA approved Groups C, D, E, F, G only.
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
10XX Single Stage, High Temp. Snap Switch, continuous rating 800°F (425°C), see chart B
10XX-XX Two Stage, High Temp. Snap Switch, continuous rating 800°F (425°C), see chart B
CHAMBER MATERIAL C1 Carbon Steel Body
C216 316SS Body
HFC1 Heat Fins & Carbon Steel Body
SPECIFIC
GRAVITY		 60 0.60 Specific Gravity (221 only)
75 0.75 Specific Gravity (221 only)
160 0.60 Specific Gravity & 150# Flange (223, 224 only)
175 0.75 Specific Gravity & 150# Flange (223, 224 only)
360 0.60 Specific Gravity & 300# Flange (223, 224 only)
375 0.75 Specific Gravity & 300# Flange (223, 224 only)
660 0.60 Specific Gravity & 600# Flange (223, 224 only)
675 0.75 Specific Gravity & 600# Flange (223, 224 only)
OPTIONS H2 H2 Socket Weld Hub (221, steel housing only)
STW SS Tag Wired
01 Breather Only (E-Housing only)
02 Drain Only (E-Housing only)
12 Breather & Drain (E-Housing Only)
23720 Fungus Proofing
Expand Table

CHARTS A & B – ELECTRICAL CIRCUITS AND RATINGS

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
-4821
-4821
-21
SP-ST open on level RISE
10
5
3†
10
5
-4820
-4820
-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
-4813
-4813
-13
DP-ST two switches E.I.* open on level RISE
10
5
3†
10
5
-4814
-4814
-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
DP-DT Two SP-DT switches
2
2
0.4**
0.25**
-1006
-1006
-06
SP-DT one switch
2
2
0.4**
0.25**
-1010
-1010
-10
Expand Table

User Guide and Instruction manual for DWYER 221/223/224

You can request the necessary certificates, documentation, instructions and user manuals for DWYER 221/223/224 using the special form.

You can buy DWYER 221/223/224 in UK or Europe at a favourable price in «DOLCHETRADE» by leaving a request on the website, by phone +441225535040 or by email . DWYER 221/223/224 price are subject to change depending on exchange rates. We deliver instruments by transport companies in the United Kingdom and Europe.

See also: Level Switches