New Atlas Copco GVS630A Oil-Sealed Vane 25 HP Pump

GVS 16-630 A Literature
GVS630A
Standard Model Includes:        
Pump        
TEFC Drive Motor        
Inlet Air Filter        
Gas Ballast Valve        
Vibration Isolation        
8000 Hr Synthetic Vacuum Oil
25 HP Rated 494 CFM with
Ultimate Vacuum of 29.9 “Hg(v)
Standard Scope of Supply
The GVS 470A and GVS 630A are a range of v-belt driven compact rotary vane vacuum pumps, single stage, oil sealed and air cooled. They have an integrated oil separator with coalescing filter, oil filter and oil return line. They feature a low pressure drop inlet non-return valve to protect the machine and system against counter-rotation.  They also incorporate guided vanes to reduce the travel run, and hence the wear and tear, on the vanes during start-up, along with a comb lubrication arrangement providing multi-point distribution of its oil resulting in a uniform oil temperature gradient across its stator.
A gas ballast valve is fitted as standard to optimize the pump’s ability to handle water vapor. An air intake filter is also provided for protection in both humid and dry applications. These features deliver high reliability through a rugged and robust design.  
Excellence by Design
Key Features
Air intake filter
Heavy duty, air inlet filter with polyester element.  Premium filtration efficiency: 99.95% for particles above 5 micron; designed specifically for vacuum applications due to its optimized pressure drop.
Inlet non-return valve
The inlet non-return valve protects the vacuum pump against counter rotation in the event of the pump stopping without the prior venting of the point of use. The device also protects back sucking of oil from the vacuum pump. This assembly is located within the inlet housing, which also contains an inlet protection screen; an additional protection device located downstream of the inlet filter.
Vacuum pump element
The key components within the element (or stage) have been optimized for efficient vacuum pumping at the lowest possible power consumption and optimal operating temperature. These 3 elements drastically influence the life cycle costs for vacuum pumps, notwithstanding the effects of product carryover.  We have simultaneously rationalized some key design features so that these general vacuum (GVSA) units achieve the desired performance profile over the operating range of ambient to the ultimate pressure. This includes optimization of:
The surface finish of the vane slots and cylinder.
Vane material selected for optimal lifetime whilst also considering noise and heat generation.
Clearances, sealing, compression ratio etc.
Electric motor
Motors have been selected to provide maximum flexibility. The motors for the GVS 470A/630A are available in 3 phase (e.g. 230V/460V, 60Hz) and are cUL/UL approved.
Oil mist separator (air/oil separator vessel)
Mounted directly onto the vacuum pump element, the oil mist separator utilizes multi step separation with minimal pressure drop. The final step of oil separation is facilitated by an ultra fine oil coalescing filter which maximizes oil retention, thereby allowing these vacuum pumps to be located close to the point of use. The oil is circulated in vacuum pump by the vacuum that is generated within the element.
Oil selection
The oil used within a vacuum pump is critical for longevity, performance and life cycle costs. Achieving optimal temperature quickly and then maintaining that temperature is a critical design point. The standard lubricant is full synthetic oil which is available commercially and as a fully tested and approved Atlas Copco lubricant (within service kits/separate containers). Atlas Copco provides the pump filled with oil, ex factory.
Fixing and vibration
The GVS-A range of vacuum pumps has low levels of vibration and does not need fixing down in normal circumstances, such as static installations. However, we supply all our machines with anti-vibration mounts as standard to allow our vacuum products to be built into machinery or fixed in position. This is achieved by utilizing the (4) M16x14 tapped holes that are provided on the underside of the pump for mounting purposes. The upper side is fixed to the vacuum pump.
Model:  GVS 630A
Inlet conditions
Unit
1. Barometric pressure
14.7
psi(a)
2. Ambient air temperature
68
°F
3. Relative humidity
0
%
60Hz Performance(1)
1. Volumetric Flowrate
494
acfm
2. Performance Curve
3. Ultimate Pressure
-with gas ballast valve open
29.90
In-HgV
-with gas ballast valve closed
29.92
In-HgV
4. Sound level(2)
75
dB(A)
5. Minimum ambient temperature
54
°F
6. Maximum ambient temperature
104
°F
Electrical data
1. Motor
25
hp
2. Motor type
Induction
3. Enclosure
TEFC
4. Starter type
Direct on line
5. Rotor Speed
1000
rpm
Physical data
1. Dimensions (L x W x H)
62 x 36 x 29
inches
2. Shipping weight
1678
lbs
3. Air inlet size
4”
FLG
4. Air discharge size
4”
FLG
5. Oil sump capacity
21 - 25
quarts
1. Performance (volumetric flow rate) measured according to ISO21360/ISO1607-1.
2. Operating sound levels for machines equipped with recommended standard motors are guaranteed ±3 dB(A) when measured in free field conditions at a distance of 1 meter according to ISO2151.