Piston Operated Mixers (POM) with Water Bath Vaporizers
   
Model Numbers are WB-200 / POM-30 to WB-3000 / POM-60. The first part of the model number indicates the vaporizer capacity in gallons per hour, the second part indicates the mixer size (30 - 40 - 60). All systems combine horizontal water bath vaporizers (WB series) with our patented Piston Operated Mixer (POM-series). They can be ordered for installation as individual units (water bath vaporizer and mixer within 15 ft. of each other), or as a very compact module unit (see options), with the mixer installed on top of the vaporizer. Both versions are equally reliable and have set the standard for value, reliability, ease-of-use, low maintenance, and high availability, in many different applications in many different countries, surpassing other high-capacity / high-pressure mixing concepts by far.

To select the correct vaporizer/mixer combination, first determine the required vaporizer capacity by adding up the connected load. Including a safety factor of 1.1 to 1.3, select the vaporizer model.

The capacity of the POM mixer depends on its configuration and the system pressure. In the table below, after selecting the vaporizer model, move to the right to find the POM model number. You can find the price for the vaporizer/mixer combination in the same table.

All WB/POM systems come complete with an Allen-Bradley PLC equipped control panel and 6-inch color LCD display with Touch Screen Operator Interface. Electrical connections between the POM mixer and the control panel are made in two different ways:

The WB/POM Series is designed for outdoor installation and requires only nominal preventive maintenance. Intended for intermittent or continuous service, the systems are manufactured to meet or exceed requirements of the ASME Pressure Vessel Code Section VIII, and the latest edition of NFPA Pamphlet #58. They are approved by Factory Mutual (FM) and Canadian  Standards Association (CSA), and are suitable for Industrial Risk Insurers (IRI) installations. All systems are factory tested, primed, painted and ready for installation. They come with 2 sets of operating manuals and test reports.

After July 2003, all models vaporizers WB-450 and above are equipped with Temperature and Pressure Transmitters in Vapor Outlet for “smart” Liquid Carryover Protection, based on pressure/temperature correlation and LPG type (propane/butane/…).
       

Vaporizer
Model

Capacity in
MM BTU (kcal)

System Pressure

10 psi

20 psi

30 psi

40 psi

50 psi

60 psi

70 psi

WB-200

18
 (4536)

POM-30 $70,972

WB-250

22
 (5544)

POM-30
$72,889

WB-350

32
 (8064)

POM-30
$77,407

WB-450

41 
(10332)

POM-40 $86,262

POM-30 $80,591

WB-550

50 
(12600)

POM-40 $88,509

POM-30 $82,838

WB-650

59 
(14868)

POM-40 $91,252

POM-30 $85,581

WB-750

68 
(17136)

POM-40 $94,991

POM-30 $89,320

WB-850

77 
(19404)

POM-40 $97,230

POM-40 $97,230

POM-30 $91,559

WB-1000

91 
(22932)

POM-40 $103,336

POM-40 $103,336

POM-30
$97,665

WB-1200

110 
(27720)

POM-60 $119,863

POM-40 $107,404

POM-40 $107,404

POM-30 $101,733

WB-1500

137 
(34524)

POM-60 $126,005

POM-40 $113,564

WB-1800

165 
(41580)

POM-60 $133,876

POM-40 $121,417

POM-30 $123,413

WB-2000

183 
(46116)

POM-60 $144,086

POM-40 $131,627

POM-30 $133,623

WB-2200

201 
(50652)

POM-60 $146,675

POM-40 $134,216

WB-2500

229 
(57708)

POM-60 $165,915

POM-60 $165,915

POM-40 $153,456

WB-3000

275 
(69300)

POM-60 $172,583

POM-60 $172,583

POM-40 $160,124

POM-40 $160,124

POM-40 $160,124

The table above shows Water Bath Vaporizer/POM Mixer combinations for standard propane applications. Configurations for other LPG mixtures may vary. Specifications are subject to change without notice. Call factory or distributor for price quotation and actual lead times.

Options, Accessories
   
The following list shows the most commonly requested options, accessories and spare parts for the WB/POM series of LPG/Air mixers. Unless listed otherwise, all options and accessories fit all mixer models, except for models modified for specific applications.
  

Options, Accessories, Spare Parts

Part Number

Description

Price in US-$

GB-3

Option: GraviBlend™-3 Gravitometer. Standard-Configuration for non-classified areas. High-speed, high-accuracy, on-line gravitometer; measures and indicates specific gravity of mixed gas. Complete with 6-inch color LCD display with touch screen operator interface and 4-20 mA output signal;

 $13,604.00

GB-3E

Option: GraviBlend™-3E Gravitometer. Configuration for hazardous areas. High-speed, high-accuracy, on-line gravitometer; measures and indicates specific gravity of mixed gas. Complete with 6-inch color LCD display with touch screen operator interface and 4-20 mA output signal;

 $17,605.00

POMOPTACC

Option: AccuBlend™ System. Electric actuator to adjust the angular position of the piston in the POM, and thereby correcting the calorific value of the mixed gas. Actuator is installed on top of the POM valve. Price includes option ACUCON for GraviBlend™-3, or dedicated PID controller which receives a 4-20 mA signal from the Gravitometer and sends the control signal to the actuator (requires “Option: Gravitometer”);

 $  8,050.00

POMOPTENI

Ethernet Adapter for System Control Panel; allows remote system monitoring through existing Networks, including Internet, Intranets, etc.; includes PLC upgrade to ML-1200R;

 $  2,807.00

POMOPTENI-E

Ethernet Adapter with built-in Web-Server; for System Control Panel; allows remote system monitoring through existing Networks, including Internet, Intranets, etc. using a standard web browser (no special software needed); includes PLC upgrade to ML-1200R;

 $  2,988.00

POMOPTRAD

Dial-Up Modem Connection to System Control Panel; allows remote system monitoring through standard phone line; includes PLC upgrade to ML-1200R;

 $  2,538.00

POMOPTTEM

Option: Three Temperature Transmitters; installed in vapor supply, air supply line, and mixed gas line. Each transmits a 4-20 mA signal to the display unit in the system control panel. Temperature display in engineering units, i.e. °F or °C. Includes Hi/Lo setpoints for each transmitter; includes expansion analog input module for PLC;.

 $  3,369.00

POMOPTMOD

Option: Module Unit. Installation of POM on top of water bath vaporizer.

 $  4,278.00

POMOPTEX

Option: Ex-proof control components; required for installations where the POM is more than 15 ft. away from an open-flame vaporizer (U.S. rules), or where required by local law. Includes explosion-proof pressure transmitters in vapor supply line, air supply line, and mixed gas line. Includes explosion proof junction box to connect all transmitter and control signals between mixer and control panel. Interconnecting cable between explosion proof junction box and control panel to be supplied and installed at job site. Control panel must be installed in non-hazardous area. Maximum distance between mixer and control panel approximately 2000 ft. (600 m).

 $  8,102.00

PLC0027

6-inch color LCD display with touch-screen operator interface; Includes memory Module;

 $  2,708.00

TRA0053

Pressure Transmitter, 0-100 psi, output 4-20 mA; for mixed gas line;

 $  1,541.00

TRA0058

Pressure Transmitter, 0-300 psi, output 4-20 mA; for vapor supply line.

 $  1,541.00

TRA0055

Differential Pressure Transmitter, -50...0…+50 “W.C., output 4-20 mA.

 $  1,541.00

POM0019

O-Ring, POM-30/40/60, actuator stem.

 $         6.00

ORI0011

O-Ring, POM-30, main body.

 $         9.00

ORI0013

O-Ring, POM-40, main body.

 $         9.00

ORI0014

O-Ring, POM-60, main body.

 $         9.00

GAU0002

Pressure gauge; liquid filled; stainless steel case, brass internals; with case vent; 
100 psi.

 $       28.00

GAU0005

Pressure gauge; liquid filled; stainless steel case, brass internals; with case vent; 
300 psi.

 $       28.00

GAU0010

Differential Pressure gauge, -50...0…+50 “W.C.

 $     369.00

SOL0012

Solenoid Valve, POM-30/40/60; for regulator loading pressure or for inlet ball valves;

 $     248.80

VAL0075