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DWYER 401

Photo DWYER 401 Description DWYER 401 Specifications DWYER 401 Model Chart DWYER 401 User Manual for DWYER 401 Related instruments to DWYER 401

DWYER 401 top mount float type level control

DWYER 401 top mount float type level control

These heavy duty top-mounted liquid level controls operate in pressurized or non-pressurized tanks and sumps with pressures to 600 psi and temperatures to 500°F. They can be ordered to operate at depths to 12 feet with a 12 foot guide rod. Adjustable in single stage and two stage operation to provide action such as operating a pump; pump and high alarm or shutdown; pump and low alarm, or high and low alarm; or high, high alarm; or low, low alarm. Alarm functions can also be used as shutdowns. Series 401 is available in mercury or snap action contact switches. Specific gravity applications from 0.5 to 1.0.

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Made in USA. brand DWYER, model 401

Fast delivery to Latvia, Estonia and Lithuania. International delivery to Europe, Asia, Africa and other continents available on request
Our warehouse is located in Riga, Latvia.

price by request

Available

Available

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

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Official distributor in Latvia

Time-tested American, European and Asian brands of control and measurent instruments

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Special price list for organisations

We offer a significant discount for trade organisations and manufacturing companies

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Worldwide shipping on request

We take care of all logistics and customs clearance. Fast delivery to Baltic countries

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After-sales service and support

Warranty service and repair, expert assistance in the operation of the instruments

Description of DWYER 401

PRODUCT APPLICATIONS

  • Oil Refineries
  • Chemical Plants
  • Power Generating Stations
  • Pumping Stations
  • Sanitary/Waste Water Facilities
  • Tanks and Vessels

Technical specifications of DWYER 401

  • Minimum Specific Gravity: See Dimensional Drawing.
  • Temperature Limit: Ambient Temperature: 212°F (100°C); Process Temperature: -20 to 500°F (-29 to 260°C) See chart.
  • Temperature Rating: -0°F (-9°C) to 500°F (260°C).
  • Switch Type: Snap action or mercury.
  • Electrical Rating: See model chart on catalog page.
  • Wiring Connections: G, WT or E enclosure, terminal block. EV enclosure, 18″ (460 mm) leads.
  • Process Connection: Top mount flange.
  • Enclosures: G, painted steel and aluminum; WT, painted steel, aluminum and neoprene; E, aluminum; EV, aluminum and neoprene.
  • Wetted Parts: See Dimensional Drawing and Model Chart.
  • Weights: Electrical head and float assembly only: G, WT 10 lb (4.5 kg); E, EV 14 lb (6.3 kg). Flange only: 49, 17 lb (7.7 kg); 59, 20 lb (9 kg); 69, 27 lb (12.3 kg); 89, 47 lb (21.3 kg). Guide rods assembly: 4 ft (1.2 m), 14 lb (6.4 kg); 8 ft (2.4 m), 28 lb (12.7 kg); 12 ft (3.6 m), 42 lb (19 kg).
  • Suggested Specifications: Liquid level control shall be top flange mounted, float operated, with (Brass)(Stainless Steel) guide rod assembly for operation to (4)(8)(12) foot depth. Float and flange shall be sized for intended specific gravity. Operation shall be 401-1 (pump), 401-2 (pump and high alarm), 401-3 (pump and low alarm), 401-4 (high and low alarm), Circuit shall be (SPST) (SPDT) (DPDT) hermetically sealed snap action (mercury) switch. Switch mechanism shall be gravity return. Enclosure shall be general purpose (weatherproof) (explosion-proof) (explosion-proof – vapor proof).

Model Chart DWYER 401

401 SERIES LIQUID LEVEL CONTROL       
				 
     401-X-X-X-X-X-X-X-OPT   MERCOID 401 LIQUID LEVEL CONTROL

     1ST SYMBOL (1ST X) OPERATING TYPE
        1       TYPE 1
        2       TYPE 2
        3       TYPE 3
        4       TYPE 4
 
     2ND SYMBOL (2ND X) ENCLOSURE
        G       GENERAL PURPOSE NEMA 1
        WT      WATERTIGHT NEMA-4, 4X
        E       EP CL I GRP B,C,D CL II GRP E,F,G NEMA-7, 9
        EV      EP VP CL I GRP B,C,D CL II GRP E,F,G NEMA-7, 9
   
     3RD SYMBOL (3RD X) CIRCUITS
        4806    4806-06  5806  7806HM  7806HM-06HM
        4810    4810-10        7810HM
        4813    4813-13  
        4814    4813-14  
        4815    4814-14                
        4820    4814-13                
        4821    4815-15    
        4874    4820-20               
        7804    4820-21
        7806    4821-21
        7807    4821-20
        7810            
        9804    7806-06       
        9806    7810-10
        9810    7810-06
        1006      
        1010    9806-06
        4912    9810-10 
        4951
    
     4TH SYMBOL (4TH X) FLOAT, ROD, AND STOP MATL
        0     NO FLOAT
        B     3-1/2" X 6" 304SS FLOAT, 303SS ROD, 316SS STOP
        C     4-1/2" COPPER FLOAT, 303SS ROD, BRASS STOP
        D     4-1/2" 316SS FLOAT, 303SS ROD, 316SS STOP
        E     7" 304SS FLOAT, 303SS ROD, 316SS STOP
 
     5TH SYMBOL (5TH X) SPECIFIC GRAVITY
        0     NO FLOAT NO SPECIFIC GRAVITY
        1.0   1.0 SPECIFIC GRAVITY  3-1/2X6SS,4-1/2SS,7SS,7CU FLOATS
        .72   .72 SPECIFIC GRAVITY  3-1/2X6SS,4-1/2SS,7SS,7CU FLOATS
        .62   .62 SPECIFIC GRAVITY  7SS,7CU FLOATS
        .5    .5 SPECIFIC GRAVITY   7SS,7CU FLOATS
   
     6TH SYMBOL (6TH X) OPERATING POINT
        0     NO FLOAT ROD
        ?     OPERATING POINT FROM 13 TO 140 INCHES
  
     7TH SYMBOL (7TH X) FLANGE AND GUIDE RODS
        0     NO FLANGE, NO GUIDE RODS
        7     5" 150# CS FLANGE, 3-1/2 X 6" FLOAT, 4' BRASS GUIDE RODS
        8     5" 150# CS FLANGE, 3-1/2 X 6" FLOAT, 8' BRASS GUIDE RODS
        9     5" 150# CS FLANGE, 3-1/2 X 6" FLOAT, 12' BRASS GUIDE RODS
        10    5" 150# CS FLANGE, 3-1/2 X 6" FLOAT, 4' 303SS GUIDE RODS
        11    5" 150# CS FLANGE, 3-1/2 X 6" FLOAT, 8' 303SS GUIDE RODS
        12    5" 150# CS FLANGE, 3-1/2 X 6" FLOAT, 12' 303SS GUIDE RODS
        19    6" 150# CS FLANGE, 3-1/2 X 6" FLOAT, 4' BRASS GUIDE RODS
        20    6" 150# CS FLANGE, 3-1/2 X 6" FLOAT, 8' BRASS GUIDE RODS
        21    6" 150# CS FLANGE, 3-1/2 X 6" FLOAT, 12' BRASS GUIDE RODS
        22    6" 150# CS FLANGE, 3-1/2 X 6" FLOAT, 4' 303SS GUIDE RODS
        23    6" 150# CS FLANGE, 3-1/2 X 6" FLOAT, 8' 303SS GUIDE RODS
        24    6" 150# CS FLANGE, 3-1/2 X 6" FLOAT, 12' 303SS GUIDE RODS
        31    6" 150# CS FLANGE, 4-1/2" FLOAT, 4' BRASS GUIDE RODS
        32    6" 150# CS FLANGE, 4-1/2" FLOAT, 8' BRASS GUIDE RODS
        33    6" 150# CS FLANGE, 4-1/2" FLOAT, 12' BRASS GUIDE RODS
        34    6" 150# CS FLANGE, 4-1/2" FLOAT, 4' 303SS GUIDE RODS
        35    6" 150# CS FLANGE, 4-1/2" FLOAT, 8' 303SS GUIDE RODS
        36    6" 150# CS FLANGE, 4-1/2" FLOAT, 12' 303SS GUIDE RODS
        64    6" 300# CS FLANGE, 4-1/2" FLOAT, 4' 303SS GUIDE RODS
        65    6" 300# CS FLANGE, 4-1/2" FLOAT, 8' 303SS GUIDE RODS
        43    8" 150# CS FLANGE, 7" FLOAT, 4' BRASS GUIDE RODS
        44    8" 150# CS FLANGE, 7" FLOAT, 8' BRASS GUIDE RODS
        45    8" 150# CS FLANGE, 7" FLOAT, 12' BRASS GUIDE RODS
        46    8" 150# CS FLANGE, 7" FLOAT, 4' 303SS GUIDE RODS
        47    8" 150# CS FLANGE, 7" FLOAT, 8' 303SS GUIDE RODS
        48    8" 150# CS FLANGE, 7" FLOAT, 12' 303SS GUIDE RODS
    
     OPTIONS (OPT)
        -STW     SS TAG WIRED
        -01      BREATHER ONLY                (E-HOUSING ONLY)
        -02      DRAIN ONLY                   (E-HOUSING ONLY)
        -12      BREATHER AND DRAIN           (E-HOUSING ONLY)
        -14210.40  SPEC 14210 FOR SCH 40
        -14210.80  SPEC 14210 FOR SCH 80
        -23720     FUNGUS PROOFING SPEC 23720

     NOTES
     1.   .72 SP GR WITH 3-1/2X6" FLOAT ONLY VALID WITH 401-1 OR 401-3.
     2.   .72 SP GR WITH 4-1/2" SS FLOAT NO VALID OVER 40" DEPTH.
     3.   CIRCUITS SK-547PC, SK-548PSS OBSOLETE 8-1-2013
     4.   CIRCUITS 4806AV 4810AV 4813AV 4814AV 4815AV 4820AV 4821AV
                   7706AV 7710AV 4808VAV 4809VAV 4826VAV 4828VAV 4838VAV
                   4896VAV 1706AV 7710AV-10AV OBSOLETE 8-22-2014
     5. CAST IRON FLANGES OBSOLETED 1-1-2018 PER ECR-041970
        1     5" 125# CI FLANGE, 3-1/2 X 6" FLOAT, 4' BRASS GUIDE RODS
        2     5" 125# CI FLANGE, 3-1/2 X 6" FLOAT, 8' BRASS GUIDE RODS
        3     5" 125# CI FLANGE, 3-1/2 X 6" FLOAT, 12' BRASS GUIDE RODS
        4     5" 125# CI FLANGE, 3-1/2 X 6" FLOAT, 4' 303SS GUIDE RODS
        5     5" 125# CI FLANGE, 3-1/2 X 6" FLOAT, 8' 303SS GUIDE RODS
        6     5" 125# CI FLANGE, 3-1/2 X 6" FLOAT, 12' 303SS GUIDE RODS
        13    6" 125# CI FLANGE, 3-1/2 X 6" FLOAT, 4' BRASS GUIDE RODS
        14    6" 125# CI FLANGE, 3-1/2 X 6" FLOAT, 8' BRASS GUIDE RODS
        15    6" 125# CI FLANGE, 3-1/2 X 6" FLOAT, 12' BRASS GUIDE RODS
        16    6" 125# CI FLANGE, 3-1/2 X 6" FLOAT, 4' 303SS GUIDE RODS
        17    6" 125# CI FLANGE, 3-1/2 X 6" FLOAT, 8' 303SS GUIDE RODS
        18    6" 125# CI FLANGE, 3-1/2 X 6" FLOAT, 12' 303SS GUIDE RODS
        25    6" 125# CI FLANGE, 4-1/2" FLOAT, 4' BRASS GUIDE RODS
        26    6" 125# CI FLANGE, 4-1/2" FLOAT, 8' BRASS GUIDE RODS
        27    6" 125# CI FLANGE, 4-1/2" FLOAT, 12' BRASS GUIDE RODS
        28    6" 125# CI FLANGE, 4-1/2" FLOAT, 4' 303SS GUIDE RODS
        29    6" 125# CI FLANGE, 4-1/2" FLOAT, 8' 303SS GUIDE RODS
        30    6" 125# CI FLANGE, 4-1/2" FLOAT, 12' 303SS GUIDE RODS
        37    8" 125# CI FLANGE, 7" FLOAT, 4' BRASS GUIDE RODS
        38    8" 125# CI FLANGE, 7" FLOAT, 8' BRASS GUIDE RODS
        39    8" 125# CI FLANGE, 7" FLOAT, 12' BRASS GUIDE RODS
        40    8" 125# CI FLANGE, 7" FLOAT, 4' 303SS GUIDE RODS
        41    8" 125# CI FLANGE, 7" FLOAT, 8' 303SS GUIDE RODS
        42    8" 125# CI FLANGE, 7" FLOAT, 12' 303SS GUIDE RODS
      6. THE FOLLOWING OPTIONS WERE OBSOLETED PER ECR-046187
        -R       MANUAL RESET SGL STAGE
        -R1      MANUAL RESET LOWER STAGE 2-STAGE CONTROLS

User Guide and Instruction manual for DWYER 401

You can request the necessary certificates, documentation, instructions and user guide for DWYER 401 using the special form.

You can buy DWYER 401 in Latvia at a favourable price in «OLIL SIA» by leaving a request on the website, by phone +371 672 70580 or by email . DWYER 401 price are subject to change depending on exchange rates. We deliver instruments by transport companies in Latvia, Estonia and Lithuania. Worldwide shipping to Europe, Asia, Africa, North and South America available on request.

See also: Level Switches