Precision Vacuum Regulators

High Resolution and Accuracy with Manual Operation

Equilibar precision vacuum regulators are designed specifically to control a highly stable inlet pressure across widely varying input conditions. These regulators show very little effect from either variation in supply vacuum or changes in flow rate. Equilibar precision vacuum regulators work differently than traditional vacuum control valve designs. The Equilibar uses a flexible diaphragm as the only moving part. This diaphragm is used to directly seal against the internal valve orifices. This eliminates the “stiction” commonly found in traditional vacuum control valves that rely on dynamic o-ring or wiper type seals. The friction caused by these seals prevents the regulator from making tiny adjustments. The Equilibar design is frictionless and can control vacuum with very high resolution.


Our precision vacuum regulators are machined from premium stainless steel 316/316L dual certified bar stock. They may also be machined from PVC, CPVC, PVDF, and PTFE materials for reduced cost, lighter weight, or improved chemical resistance. The precision vacuum regulator is delivered with a small set-point regulator on top for convenient knob adjustment. Sizes range from 1/4″ up to 1″.

Our precision vacuum regulators work in a very different way from vacuum breakers. Learn more about how they work.

If you know your flow rate and pressure conditions, our application engineers can select the optimum size for your application. However, many customers don’t have good flow data and select regulators to match existing piping.

Videos about Precision Vacuum Regulators

This video shows how the Equilibar vacuum regulator maintains high accuracy and resolution even as the supply vacuum pressure changes and system flow varies from high flow rates to low flow rates.

Click here for the smaller body size precision vacuum regulators video

Click here for the high flow rate vacuum control valves

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Precision Vacuum Regulators

A manually adjusted high resolution vacuum regulator

 

Drawing of a precision vacuum regulator

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Metallic Vacuum Regulator Details

Model Inlet / Outlet Port Reference Port Std. Body Materials Diameter Height* Cv Range (Precision) Available End Fittings
(inch) Min Max Std Available
EVR-2 ¼” 1/8″ SS316 3.0 1.3 1E-3 1.0 NPT Vacuum Flange BSP
EVR-3 3/8″ 3.5 1.4 1E-3 1.8
EVR-4 ½” 4.5 1.6 1E-3 3.0
EVR-6 ¾” 6.0 2.0 1E-2 6.2
EVR-8 1″ 7.0 2.6 1E-2 9.9
*Height does not include 3″ manual set point regulator.

Polymeric Vacuum Regulator Details

Model Inlet / Outlet Port Reference Port Std. Body Materials Diameter Height* Cv Range (Precision) Available End Fittings
(inch) Min Max Std Available
EVR-2 ¼” 1/8″ PVC
CPVC
PTFE
PVDF
Acetal
3.25 1.5 1E-3 1.0 NPT Vacuum Flange BSP
EVR-3 3/8″ 3.75 1.6 1E-3 1.8
EVR-4 ½” 4.75 1.8 1E-3 3.0
EVR-6 ¾” 6.25 2.25 1E-2 6.2
EVR-8 1″ 7.25 2.9 1E-2 9.9
*Height does not include 3″ manual set point regulator.

Other Equilibar Vacuum Control Products:

image of equilibar high precision vacuum regulator EVR with mechanical pilotHigh Precision Vacuum Regulators 1/4" to 1" 0 - 30 inHg / 762 mm Hg
image of Equilibar High Flow Vacuum Regulator with mechanical vacuum pilot regulatorHigh Flow Vacuum Valves 1.5" to 4" 0 - 30 inHg / 762 mm Hg
image of anodized aluminum Equilibar vacuum regulator with QPV1 electronic pressure regulator pilotElectronic Vacuum Regulators 1/4" to 1" 0 - 30 in Hg / 762 mm Hg
image of Equilibar BD24 with QPV electronic pressure control pilotLarger Electronic Vacuum Valves 1.5" to 4" 0 - 30 in Hg / 762 mm Hg

Equilibar News

Diane Jacober, team member spotlight

Team Member Spotlight: Diane Jacober, Mechanical Engineer and Marketing Specialist

We are happy to introduce Diane Jacober, a mechanical engineer who has been working as marketing specialist for Equilibar since late last year. Diane brings a unique and especially useful set of skills to Equilibar.  She earned bachelor’s and master’s degrees in engineering from Dartmouth College and has worked as a process engineer, project engineer […]

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