HVS LPG-Vapor / Air Mixers

All HVS Systems are designed to be used with an existing LPG vapor source, such as a vaporizer, or as the replacement for less efficient or less reliable LPG-vapor/air mixing systems. They come complete with steel skid, vapor inlet header, venturi arrangements, surge tank, electric/electronic controls, and all other equipment necessary for safe operation.  

All HVS systems monitor the gas pressure in the surge tank. Smaller systems up to two venturi arrangements use pressure switches and standard controls. Larger systems with three or more venturi arrangements use a pressure transmitter which is connected to an Allen-Bradley PLC. The PLC “sequences” the venturi lines and controls all system safety functions. The PLC also communicates with an Allen-Bradley display unit (Operator Interface), indicating system pressures, temperatures (optional), and any trouble conditions that may occur. The PLC may also be used to “interlock” the HVS system with an external vaporizer.   

Installations where the mixer system is separated from an open-flame vaporizer, and installations with electric vaporizers, require the option “Explosion Proof Control Components”, which includes explosion proof transmitters and solenoid valves. The control panel for these mixers must be installed in a non-hazardous location.  Mixed Gas Pressures of more than 12 psi require the High Pressure option. High Pressure Option includes ASME “U”-stamped surge tank.     

Beginning in March 2004, all HVS Mixers are equipped with two solenoid valves per venturi train. The “dynamic” solenoid valve opens and closes each time a venturi train is activated to produce mixed gas. The “static” solenoid valves opens when the mixer is started and stays open until the mixer is stopped, or until a high-pressure alarm occurs. This feature provides an additional level of safety and prevents the unwanted discharge of mixed gas in case of a failure of the “dynamic” solenoid valve.
 

Model Number

Number
 of
Venturis

Approximate
Skid Size
W x L x H

Price
 
Standard
Version

Price
 
9 to 12 psi
Version

1 (1)

54 x 54 x 83

1 (1)

54 x 54 x 83

2 (2)

54 x 54 x 83

2 (2)

54 x 54 x 83

3 (3)

65 x 102 x 70

4 (4)

65 x 102 x 70

5 (4)

65 x 102 x 70

6 (5)

65 x 128 x 80

7 (6)

65 x 128 x 80

8 (6)

65 x 128 x 80

9 (8)

65 x 199 x 84

10 (9)

65 x 199 x 84

11 (9)

65 x 199 x 84

12 (9)

call factory

13 (10)

14 (11)

15 (12)

16 (12)

17 (13)

18 (14)

19 (14)

20 (15)

21 (16)

22 (17)

23 (17)

24 (18)

25 (19)

Note 1: The actual number of Venturi arrangements per system depends on the specified mixed gas pressure.
Higher sendout pressures may have fewer Venturi arrangements, and lower sendout pressures may have more Venturi arrangements than listed above.

The following list shows the most commonly requested options, accessories and spare parts for HVS series LPG/Air mixers. Unless listed otherwise, all parts fit all models and all model-years after 1985, except for models modified for specific applications. When ordering spare parts, please provide the serial number of your HVS Mixer.
   

Options, Accessories, Spare Parts

Description

Price in US-$

HVSOPT-1

Electronic controls with Allen-Bradley PLC ML-1000A; including electronic pressure transmitters and intelligent display unit (Allen-Bradley PanelView-300 Micro) with function keys and “soft-keys” for setpoint-entry and menu navigation; for models HVS-7MM to HVS-20MM;

 $6,235.00

HVSOPT-4

6-inch color LCD display with touch-sensitive operator interface; replaces standard display in mixer control panel; (only available for PLC controlled systems);

$2,708.00

HVSOPT-5E

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-1100;

$2,988.00

HVSOPT-6

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