equilibar s hygienic fd series back pressure regulator brochure

7/29/2019 Equilibar s Hygienic FD Series Back Pressure Regulator Brochure

http://slidepdf.com/reader/full/equilibar-s-hygienic-fd-series-back-pressure-regulator-brochure 1/4

February, 2013 pg. 1

Precision

Back Pressure Regulators

Unique Diaphragm Regulator Technology:• 5X more Precise than standard Pressure Regulators

• Dome loaded for manual or electronic control

• Elegant frictionless design

• Suitable for ultra-pure, hygienic, and aggressive chemicals

Hygienic FD Series

Back Pressure Regulators

Precision is now available in Hygienic Design

Holds stable pressure at set-point from the

lowest to the highest ow rate

Improves ow control by isolating pressurevariations

Dome Loaded Design

Matches your process pressure 1:1 to the pressure• applied to the top reference port

Manual AdjustmentUse manual regulator to provide set-point•

Computer Automated ControlUse electronic pressure regulator to provide set-point•

EB5FD8 - SS316L with 1” Tri-Clamp Fitting

Example of Liquid Product Blending

Pressure range 1 psig to 150 psig•

Ultra wide ow range (1000:1 turndown)•

Temperatures up to 100 C•

Standard 316L Stainless Steel Body•

FKM (Viton) diaphragm std / PTFE/Glass available•

Tri-Clamp ttings or weld tube stub ends•

Crevice-free; drainable in vertical position•




The Equilibar® back pressure regulator is an excit-ing breakthrough in precision pressure control.Designed for critical and demanding processes, the

patented Equilibar® oers unmatched precisionacross a wide range of pressures and ow rates.

How the Equilibar Back PressureRegulator Works

The Equilibar® Precision Back Pressure Regulatorworks like a uid transistor by forming a uniqueforce balance on a exible diaphragm betweenthree separate pressures.

The uid inlet pressure and the downstream outletpressure exist on the wetted side of the diaphragm.The pilot set-point applies pressure on the non-wetted side.

The lower pressure of the outlet tries to hold thediaphragm in a leak-tight seal with the orices.However, any slight excess between the uid inletpressure and the pilot set-point pressure quicklyoverwhelms these seating forces and pulls the dia-phragm away from the orices.

The pilot set-point pressure acts in a 1:1 ratio to setthe pressure to be controlled on the inlet port. Asshown at right, this pilot pressure can be supplied byeither an electro-pneumatic regulator or a manualregulator.

Traditional backpressure regulators use springs togradually open up as the overpressure is used tocompress the spring.

The Equilibar back pressure regulator uses only a

frictionless fexible diaphragm to modulate the pre-sure. It fully opens in less than 1% overpressure inmost applications. Our multiple orices allow us tocontrol over incredibly wide ow rate ratios - over1000:1 ratios in most applications - and handle twophase ows.

Equilibar back pressure technology is protected byUS and foreign patents.

Unmatched Precision . . . .

Sensitivity and Precision -Our Key Performance Advantage

Inlet Outlet

Pilot

(Reference)Diaphragm

E/P

Electro-

Pneumatic

Regulator

Manual

Pressure

Regulator

- OR -

2 Set-Point Options

1/4” GS4 SS16 back pressure regulatowith manual set-point regulato




Material Pressure Range

FKM (Viton) reinforced 1 psig to 150 psig

PTFE/Glass 5 psig to 150 psig

Hygienic FD SeriesPrecision Back Pressure RegulatorIn-Line FD Series features

In-Line FD Body

ModelInlet / Outlet

PortReference

PortBody

MaterialsDim A

Dim A’(Tube Stub)

Dim B Dim C Dim DMax StdPressure

Cv Range(precision)

inch (mm) (psig) Min1 Max

EB1FD4 6mm ID1/2” Tri-Clamp

1/8”NPT

SS316L(std.)

Hastelloy C& Other

3.4(86)

N/A1.4(36)

2.0(51)

0.96(25)

150

1E-70.8

EB1FD4 10mm ID 1.0

EB5FD8 1” Tri-Clamp8.1

(204)5.9 (151)

2.4(61)

6.0(152)

1.98(50)

1E-3 8

EB6FD12 1.5” Tri-Clamp9.1

(230)6.8 (173)

2.7(69)

7.0(178)

1.98(50)

1E-2 12

EB8FD16 2” Tri-Clamp 11.1(280)

8.8 (223) 3.6(91)

9.0(229)

2.52 (64) 1E-2 19

For gas, liquid, and mixed phase processes

Hygienic design:

No Crevices•

<32Ra Finish•

Drains Fully•

Available Diaphragms 1 - Minimum Cv dependant on diaphragm and set-point•pressure

3.51E-05 3.51E-04 3.51E-03 3.51E-02 3.51E-01

0

5

1

1

2

2

3

0

5

10

15

20

25

30

35

40

45

1 10 100 1000 10000

Flow, SCFM

I n l e t P r e s s u r e ,

p s i g

Flow, ml/min

EB1F4 Water Performance Trials

6mm ID/Viton Diaphragm

Various Set Points: 5, 20, 40 Psig

EB1FD4 - SS316L with 1/2”

Tri-Clamp Fittings

Pressure Stability and Precision

Over Varying Flow

Equilibar regulators feature ultra sensitive dia-phragm operated back pressure technology thatis able to control pressure with high precisionover a wide range of ows. Most back pressureregulators vary signfcantly with changes inprocess ow. The stability of the Equilibar regu-lator is unmatched in the industry.

The graph on the right illustrates the pressurecontrol over 3 -4 orders of liquid ow at variousset points.

A (Tri-Clamp)

A' (Tube Stub)

D B

C

1/8" NPT Reference Port




Material Pressure Range

Viton (reinforced) 1 psig to 150 psig

PTFE/Glass 5 psig to 150 psig

Hygienic FD SeriesPrecision Back Pressure RegulatorAngled FD Series Features

Angled FD Body

Model Inlet Port(s)1 OutletPort

ReferencePort

BodyMaterials

Dim A Dim BMax StdPressure

Max CustomPressure

Cv Range(precision)

inch (mm) (psig) Min2 Max

EB4FD81” Tri-Clamp

orTube Stub

2.5” Tri-

Clamp

1/8”

NPTSS316L 3.1 (180) 7.06 (79) 75 150 1E-2 4.0

For gas, liquid,

and mixed phase processesOptional double inlet porting designHygenic:

No Crevices•<32Ra Finish•drains fully•

Available DiaphragmsNotes:

1 - Double or Single Inlet Port Options

2 - Minimum Cv dependant on diaphragm and set-point

pressure

EB4FD8 - SS316L with two 1” Tri-Clamp inlets (available with one or two inlets)

B

A

EB4FD8 - SS316L with 1” Tube Stub inle

O

I

I

Equilibar PrecisionBack Pressure

Regulator

To Application

Pump

Drop out Tank

R

Set Point Controler

Example of Liquid Pump Control Applications

The FD series is specically designed for a variety

of gas, mixed phased and liquid applicationswhere high precision and sanitary or crevice freeinternals are a must.

An example of a typical liquid pump control appli-cation can be seen in the schematic on the left. Thedual inlet port allows for easy inline mounting fromthe pump to the application.

Outlet(Bottom)

Inlet Optional2nd Inlet

equilibar s hygienic fd series back pressure regulator brochure

Documents