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Equipment › Ergonomic Vacuum Lifting Systems › ANVER VT Systems › VT Accessories and Parts › VRV Vacuum Relief Valves

ANVER · Made in USA

ANVER Easy Adjustable Vacuum Relief Valves (VRV)

ANVER vacuum relief valves (VRV) let a small amount of air into the pump to cool it and prevent dead-head damage. Specifications for VRV-EA valves and add-on kits are listed below.

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Vacuum relief valves, vacuum flow valves for large blower type vacuum pumps

Manufacturer PDF

ANVER VRV EA type vacuum relief valves

ANVER easy adjustable Vacuum Relief Valves (VRV) are designed to protect vacuum pumps from internal damage due to a dead-head situation. VRVs allow a small amount of air into the vacuum pump, which cools the temperature and, in doing so, prevents overheating and possible damage. VRVs can be preset to a preferred vacuum level in order to provide the proper amount of air to cool and protect your vacuum pump. You can set a predetermined vacuum level using a vacuum gauge in the system. The VRV can be mounted anywhere in the system manifold. Consider mounting the VRV close to the vacuum pump and gauge to make adjustments easily as needed. ANVER recommends purchasing vacuum gauges shown in specifications below. VRVs are an inexpensive way to insure your expensive regenerative vacuum pump.

Features

Vibration resistant – holds settings
Spring-loaded metal shaft and sealing cup
Anodized aluminum construction for longevity and ruggedness
Adjustable locking ring and internal bronze bearing for wear resistance
Operational range from 6 in. to 21 in. of Hg
Easy access from the top to reset valve without removing it from the manifold

Applications

Recommended for most applications. VRVs are ideal for vacuum handling of non-porous loads, in addition to many other applications that may cause a vacuum pump to dead-head or burnout.

Specifications for easy adjustable VRV EA types

Product Photo	Part Number	Use with Large Variety of Vacuum Pumps Including Our Model Numbers		Overall Height in. (mm)	Diameter in. (mm)	Thread Size	Item Weight oz. (grams)	Vacuum Gauges Available
	VRV-1-EA Easy Externally Adjustable Type		VB3HF, VB7HV, VB9HV	3.50 – 4.38 (88.9 – 111.3)	2.00 (50.8)	1″ NPT Male	10.60 (300.5)
	VRV-112-EA Easy Externally Adjustable Type		VB3HF, VB4HF, VB7HV, VB8HF, VB9HV	3.50 – 4.38 (88.9 – 111.3)	2.50 (63.5)	1½” NPT Male	14.64 (415)
	VRV-2-EA Easy Externally Adjustable Type		VB4HF, VB7HV, VB8HF, VB9HV	3.50 – 4.38 (88.9 – 111.3)	3.00 (76.2)	2″ NPT Male	18.66 (529)

Vacuum relief valve add-on kit for regenerative pumps

Valve Settings: In most cases, initial settings for the valve should be set slightly below the pump’s maximum vacuum level. Application types 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 6 in. to 21 in. of Hg, you can use a larger size VRV or double them up (shown below). Using a vacuum gauge and flow meter is recommended to set the valves in critical applications.

Specifications for vacuum relief valve add-on kits

Product Photo	Part No.	Description
	VRV-112-KIT-4	Vacuum Relief Valve Add-On Kit for VB4HF-S Vacuum Station and used with -4-SDE Sound Deadening Enclosure, 1½” NPT
	VRV-112-KIT-7/9	Vacuum Relief Valve Add-On Kit for VB7HV and VB9HV Vacuum Stations, 1½” NPT
	VRV-112-KIT-7-SDE	Vacuum Relief Valve Add-On Kit for VB7HV Vacuum Station, 1½” NPT
	VRV-112-KIT-9-SDE	Vacuum Relief Valve Add-On Kit for VB9HV Vacuum Station, 1½” NPT
	VRV-2-KIT-8/11	Vacuum Relief Valve Add-On Kit for VB8HF or VB11HV Vacuum Station, 2″ NPT
	VRV-2-KIT-8-SDE	Vacuum Relief Valve Add-On Kit for VB8HF Vacuum Station, 2″ NPT