Anver Vacuum Lifters, Vacuum Cups, Vacuum Pumps, Vacuum Tube Lifters, Vacuum Sheet and Plate Lifters, Vacuum End-EffectorsVacuum Relief Valves, Vacuum Flow Valves
Relief Valves for Regenerative Vacuum Pumps

Allows air to cool motor bearings and extend vacuum pump life.

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ANVER Vacuum Relief Valves for Large Regenerative Vacuum Pumps and Blowers

Vacuum handling of non-porous loads may cause a vacuum pump to 'dead-head'. Most vacuum pumps are not designed for operation under this condition. ANVER Vacuum Relief Valves are designed to protect the vacuum pump from internal damage by preventing this situation. These valves allow a small amount of air into the vacuum pump which cools the pump. The valves work by opening to atmosphere at a predetermined vacuum level. All relief valves can be set to provide the proper protection for our vacuum pumps. The relief valve can be mounted anywhere in the system manifold.


Features:

  • Rugged all plated steel construction for long life

  • Valves can be reset by user as needed

  • Vibration resistant - Hold their settings

  • Operational range from 7 in. to 16 in. of Hg (For lower levels, as low as 2 in. of Hg, vacuum relief valves must be used in parallel - see example below)

Specifications:

vacrelif.gif (4272 bytes)
Vacuum Application

Product Photo
(Click to
Enlarge)

Part No.

Use with Vacuum Pump
Model Number

Overall Height
in.
(mm)
Diameter
in.
(mm)

Thread Size

VRV-112

VRV-112

VB9HV-S

VB3HF, VB4HF,
VB7HV, VB8HF,
VB9HV

6.00
(152.4)
2.12
(51.9)

1½" FNPT

VRV-2

VRV-2

VB9HV-S

VB4HF,
VB7HV, VB9HV

7.38
(180.8)
2.19
(55.7)

2" FNPT

VRV-3 VB9HV-S VB8HF 6.56
(160.7)
3.75
(91.9)
3" FNPT

Product Photo
(Click to
Enlarge)

Part No.

Description

VRV-112-KIT

Vacuum Relief Valve Add-On Kit for Regenerative Pumps, 1½" NPT

Example of Valves Used in Parallel:

ANVER VB 8 Blower with (2) VRV-3 Vacuum Relief Valves

Valve SettingsIn most cases, initial settings for the valve should be set slightly below the pump's maximum vacuum level. Application type and user preferences determine what the maximum level should be. Load capacity must be adjusted accordingly, based on achieved vacuum at the vacuum attachment point.

Need more Flow? If you need to get to a lower vacuum level or flow rate than the operational range from 7 in. to 16 in. of Hg you can double them up as the photo above shows.  Using a vacuum gauge and flow meter is recommended to set the valves in critical applications.

Pressure Applications: If you are using an ANVER Vacuum Pump as a blower, we can offer these relief valves as Pressure Relief Valves instead. They are dimensionally identical and similar in price.

Go to Vacuum System Accessories   Go to VT System Replacement Parts

ANVER Corp.,  36 Parmenter Rd,  Hudson, MA  01749  USA  -  Tel: 800-654-3500  -  978-568-0221  -  Fax: 978-568-1570

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