Equilibar Precision performance comparison chart
Pressure stability
Equlibar's unique technology allows for highly stable inlet pressure across widely varying flow rates and process conditions. See performance curves.

Equilibar Back Pressure Regulators
Product Details

Equilibar is proud to offer the most precise back pressure regulators available in the industry. Our unique technology offers up to 5X the precision of standard regulators, across widely varying flow rates and pressures.

Equilibar back pressure regulators are Made in the USA Equilibar back pressure regulators are designed and manufactured in the USA. Our small and medium sizes are often in stock available for quick delivery. Choose from our wide selection of available sizes, materials, and styles.

Contact our engineers for more information or to request a customized design for your special application.


Research Series Back Pressure Regulators
1/16" to 1/4" sizes

Type Photo Std. Pressure Range Size Range Notes

Research Back Pressure Regulators


LF, HF, HP, ULF and ZF Series

stainless steel Equilibar Precision Pressure Regulator
Research Series Brochure
Research Series page 		0.02 to 5000 psig 1/16" ,1/8" and 1/4" Low and Ultra Low Flow
For gas, mixed-phase, and certain liquid applications
Cv from ZERO to 0.6

12 page Research Series Brochure

Industrial Pressure Regulators - 1/4" through 1"

Type Photo Std. Pressure Range Size Range Notes

Gas & Mixed Phases

GS Series


GS Series Brochure

Open back Equilibar Precision Pressure Regulator
GS Series

 0.02 to 1000 psig
also vacuum		 1/4" to 1" Rugged bar stock construction.
Compact configuration
Gases and mixed phase fluids
(certain liquid applications)

Liquid applications

NL Series



NL Series Brochure

Equilibar Precision Pressure Regulator
NL Series
Back Pressure Valves

 0.02 to 1000 psig 1/4" to 1" Rugged bar stock construction.
Designed for liquids
Same performance as GS
Includes feature to inhibit water hammer


Industrial Pressure Regulators - 1.5" and larger

Type Photo Std. Pressure Range Size Range Notes

Larger sizes

NLB Series



NL Series Brochure

Equilibar Precision Pressure Regulator
NLB Series
Back Pressure Valves

 0.02 to 200 psig 1.5" to 4" Gas & Mixed phase fluids
Welded external elbows
Same great performance

Hygienic Back Pressure Regulators

Type Photo Std. Pressure Range Size Range Notes

FD Hygienic Series



FD Series Brochure

stainless steel Equilibar Precision Pressure Regulator


FD Hygienic Series page 		0 - 100 psig

(0-7 bar)

 1/2", 1", and 2"
tri-clamp or stub end

 

 PTFE or Viton diaphragms
drainable designs

Other Available Body Styles

Equilibar has a wide variety of body styles available for unique applications. Our specialty is demanding applications, and we frequenty customize our regulators to fit your needs.

Type Photo Std. Pressure Range Size Range Notes

Quick Open Back
Pressure Regulators



SC Series Brochure

Equilibar Precision Pressure Regulator
SC Series

 0.02 to 100 psig 1/8" to 1"  

Flow through body option
Quick-open clamp
Gas applications
Low flow liquid applications

Vacuum Regulators



Vacuum Regulator Brochure

Equilibar Precision Vacuum Regulator
EVR Vacuum page

 0-30 inHg 1/4" through 4" For vacuum range
Uses NL and NLB bodies
Manual or computer automation