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DWYER DP

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

DWYER DP double bellows differential pressure switch

DWYER DP double bellows differential pressure switch

Two opposing bellows combine maximum sensitivity and vibration resistance at a moderate cost in the Series DP Differential Pressure Switches. Both set and reset points are easily adjustable through non-interactive, externally accessible controls. Visible setpoint indicators simplify changes. SPDT snap action switch, 316 stainless steel or brass bellows, flanged steel housing. Rated pressures to 600 psig.

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Made in USA. brand DWYER, model DP

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.

Retailprice from $1701,45

Available

Available

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

Advantages

Official distributor in Latvia

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

Advantages

Special price list for organisations

We offer a significant discount for trade organisations and manufacturing companies

Advantages

Worldwide shipping on request

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

Advantages

After-sales service and support

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

Description of DWYER DP

A wide variety of switches and circuit styles enables exactly the specific type of control function needed for any system. Mercury switches are a good choice for humid areas while snap switches are better able to resist vibration. Various operations possible include single adjustment – fixed deadband, double adjustment – adjustable deadband, manual reset (increasing or decreasing pressure) and two stage with each SPST or SPDT switch independently adjustable. Standard enclosure is NEMA-1 style. Optional weatherproof construction is for outdoor use and explosion-proof enclosure meets requirements for Class I, Groups C & D; Class II, Groups E, F & G.

PRODUCT APPLICATIONS

  • Accurate switch triggers in high pressure applications

FEATURES

  • Bellows switch design provides sensitivity to pressure changes but resists vibration preventing out of range switching
  • External access to set and rest controls makes for easy adjustments
  • Visible set point indicators simplify changes

OPTIONS

  • Weatherproof Housing – to order add “W” suffix after DPA. Example: DPAW-7033-153-61.
  • Explosion-proof Housing – to order add “E” suffix after DPA. Example: DPAE-7033-153-61.

Technical specifications of DWYER DP

  • Wetted Materials: Brass on ranges 61, 62, 63 or 316SS on ranges 62E, 64E 65E.
  • Temperature Limits: -10 to 180°F (-23 to 82°C).
  • Pressure Limit: Maximum pressure of the operating range.
  • Enclosure Rating: General purpose, weatherproof or explosion-proof.
  • Switch Type: Mercury or snap switch, see Ordering Page.
  • Electrical Rating: See Ordering Page.
  • Electrical Connection: Screw terminal.
  • Conduit Connection: General purpose: 1/2″ hole for conduit hub. Weatherproof: 1/2″ conduit hub. Explosion-proof: 3/4″ NPT female.
  • Process Connection: General purpose and weatherproof: 1/8″ NPT female. Explosion-proof: 1/4″ NPT male.
  • Mounting Orientation: Vertical.
  • Set Point Adjustment: Thumbscrew.
  • Weight: General purpose: 5 lb (2.3 kg). Weatherproof: 7 lb (3 kg). Explosion-proof: 25 lb (11 kg).
  • Compliance: cULus.

How to buy DWYER DP

Model Description Price
DPA-33-153-61 Differential pressure switch, brass bellows, range 0-10 psid (0-0.7 bar), max. pressure 50 psig (3.5 bar), min. deadband 1.0 psid (.07 bar).
$1,701.45
DPA-33-153-62 Differential pressure switch, brass bellows, range 0-20 psid (0-1.4 bar), max. pressure 100 psig (6.9 bar), min. deadband 1.5 psid (.10 bar).
$1,701.45
DPA-33-153-64 Differential pressure switch, brass bellows, range 0-30 psid (0-2.1 bar), max. pressure 300 psig (20.7 bar), min. deadband 3.0 psid (.21 bar).
$1,701.45
DPA-43-153-62E Differential pressure switch, 316SS bellows, range 0-20 psid (0-1.4 bar), max. pressure 100 psig (6.9 bar), min. deadband 2.0 psid (.14 bar).
$3,508.95
DPA-43-153-64E Differential pressure switch, 316SS bellows, range 0-30 psid (0-2.1 bar), max. pressure 300 psig (20.7 bar), min. deadband 3.5 psid (.24 bar).
$3,508.95
DPA-7033-153-61 Differential pressure switch, brass bellows, range 0-10 psid (0-0.7 bar), max. pressure 50 psig (3.5 bar), min. deadband 1.5 psid (.10 bar).
$1,830.40
DPA-7033-153-62 Differential pressure switch, brass bellows, range 0-20 psid (0-1.4 bar), max. pressure 100 psig (6.9 bar), min. deadband 2.5 psid (.17 bar).
$1,830.40
DPA-7033-153-64 Differential pressure switch, brass bellows, range 0-30 psid (0-2.1 bar), max. pressure 300 psig (20.7 bar), min. deadband 6.0 psid (.41 bar).
$1,830.40
DPA-7043-153-62E Differential pressure switch, 316SS bellows, range 0-20 psid (0-1.4 bar), max. pressure 100 psig (6.9 bar), min. deadband 3.0 psid (.21 bar).
$3,478.80
DPA-7043-153-64E Differential pressure switch, 316SS bellows, range 0-30 psid (0-2.1 bar), max. pressure 300 psig (20.7 bar), min. deadband 6.0 psid (.41 bar)
$3,478.80
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Model Chart DWYER DP

EXAMPLE DPA  _33 _153 61 DPA-33-153-61 Differential Pressure Control, brass bellows, adjustable deadband, automatic reset, SPDT mercury switch, adjustable range 0-10 psid (0-0.7), operating range 30″ Hg vac – 50 psig (75 cm Hg vac – 3.5)
CONSTRUCTION DP_ General purpose enclosure, NEMA -1 (standard) CSA
RESET
OPTIONS		 A Automatic reset, adjustable deadband, double adjustment
R U Manual reset, single adjustment, operates on decrease automatically CSA
R L Manual reset, single adjustment, operates on increase automatically CSA
S Automatic reset, fixed deadband, single adjustment
HOUSING
OPTIONS		 W Weatherproof enclosure, NEMA-3R, 4, 4X CSA
E Explosion-proof enclosure, NEMA-7, 9, Class I, Groups C & D, Class II, Groups E, F & G CSA
CIRCUIT
(SWITCHING)
OPTIONSFor electrical code see chart below.		 2 SPST mercury switch, elect. code A, opens on differential pressure increase CSA
3 SPST mercury switch, elect. code A, closes on differential pressure increase CSA
153 SPDT mercury switch, elect. code B CSA
156 SPDT, 2 each SPST mercury switches, 1 each opens on differential pressure increase, 1 each closes on differential pressure increase, elect. code A CSA
804 DPDT, 2 each SPDT mercury switches, elect. code B CSA
( ) Other circuits available, consult factory
S 2_ _ 2 SPST magnetic mercury switch, elect. code I, opens on differential pressure increase, fixed deadband CSA
S 2_ _ 3 SPST magnetic mercury switch, elect. code I, closes on differential pressure increase, fixed deadband CSA
4_ _ 4132 2 stage, 2 each SPST magnetic mercury switches, 1 each closes on differential pressure increase, 1 each closes on decrease, both open mid range, elect. rating per note †† below CSA
5_ _ 2 SPST magnetic mercury switch, elect. code H, opens on differential pressure increase, narrow adjustable deadband CSA
5_ _ 3 SPST magnetic mercury switch, elect. code H, closes on differential pressure increase, narrow adjustable deadband CSA
70_ _ 153 SPDT snap acting switch, elect. code D, adjustable deadband
70_ _ 804 DPDT, 2 each SPDT snap acting switches, consult factory
S 72_ _ 153 SPDT snap acting switch, fixed deadband, elect. code E per note ‡‡ below
S 72_ _ 804 DPDT, 2 SPDT snap acting switches, fixed deadband, elect. code G per note ‡‡ below
74_ _ 2 stage, 2 each SPDT snap acting switches, elect. code G per note ‡‡ below
OPTION B Delrin® bushed movement
BELLOWS MATERIALS _ _33 Brass bellows, ranges 61, 62, 64 only CSA
_ _43 Type 316 stainless steel bellows, ranges 62E, 64E, 65E only CSA
ADJUSTABLE
DIFFERENTIAL
PRESSURE
RANGES
OPERATING
PRESSURE
RANGES		 61 Adjustable range 0-10 psid, operating range 30″ Hg vac – 50 psig, (75 cm Hg vac – 3.5) CSA
62 Adjustable range 0-20 psid, operating range 30″ Hg vac – 100 psig, (75 cm Hg vac – 7.0) CSA
64 Adjustable range 0-30 psid, operating range 30″ Hg vac – 300 psig, (75 cm Hg vac – 21) CSA
62E Adjustable range 0-20 psid, operating range 30″ Hg vac – 100 psig, (75 cm Hg vac – 7.0) CSA
64E Adjustable range 0-30 psid, operating range 30″ Hg vac – 300 psig, (75 cm Hg vac – 21) CSA
65E Adjustable range 0-80 psid, operating range 30″ Hg vac – 600 psig, (75 cm Hg vac – 42) CSA
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ELECTRICAL RATINGS

CODE
SUFFIX
AC CAPACITY
DC CAPACITY HP
AC
DC
120V
240V
440V
120V
240V
A
-2, -3, -156
10A
5A
3A
10A
5A
3/4
1/3
B
-153, -804
4A
2A
**
4A
2A
1/8
NA
D
-153
15A
15A
15A
0.5A
0.25A
1/8
NA
E
-153
15A
15A
NA
‡
‡
†
NA
G
-804
5A
5A
NA
•
•
NA
NA
H
-2, -3
5A
2A
NA
2.5A
1A
1/8
1/10
I
*-2, -3
0.5A
0.25A
NA
0.25A
0.15A
NA
NA
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User Guide and Instruction manual for DWYER DP

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

You can buy DWYER DP in Latvia at a price starting from1701,45 $ in «OLIL SIA» by leaving a request on the website, by phone +371 672 70580 or by email . DWYER DP 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: Pressure Switches