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By Lucy Niu

YANTAI VOLM VACUUM TECHNOLOGY CO., LTD.

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Introduction of VOLM

VOLM is founded in 2002 (Former Yantai Fushan Vacuum Pump Factory since 1998)

Registered capital is 20 million RMB, total assets is 98 million

Be equipped with the most advanced processing center & quality control center (eg.: DMG Tool Presetting and Measuring Machine, SCHENCK Smart Balancer, FARO 3D Scanner)

Certificate of ISO 9001 : 2008 quality management system

South Plant at a glance

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Products of VOLM

Water ring vacuum pump/compressor1. 2BV series2. 2BE1 & 2BE1S series3. 2BE3 series

Dry screw vacuum pump High vacuum booster/ Roots vacuum pump Roots water ring vacuum pump unit Roots screw vacuum pump unit

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Water ring vacuum pump

2BV series – A new generation of energy-saving products;– Suction pressure can reach 33mbar absolute pressure (97% vacuum);– Bearings are imported ( NTN or NSK)– Motors are of Y2 series, protection class IP54, IP55 (ordinary IP44), insulation class

F (generally B-class insulation) – Ideal substitutes of SK, 2SK series and W, WY, WL series;

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Water ring vacuum pump

2BE1 & 2BE1S series– Single stage (Max. Suction capacity 200-5800M3/H ) and two stage (200-7500M3/H)– Diverse material selections (304, 316L, duplex steel, titanium, Hastelloy etc.)– Parts can be exchanged with the same model ones of the Siemens equipment– Varied transmission methods

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Water ring vacuum pump

2BE3 series– Max. Suction capacity 4000-37000M3/H;– Suction pressure 16-101KPa;– Suitable to work in more harsh conditions and for pumping corrosive gas or when the

work fluid is corrosive one; – High-precision casting;– Easy maintenance, reliable operation, energy efficient;

Water ring compressor

Based on customer’s requirements of vent hole,

motor and gas water separator, compressor is modified from water ring vacuum pump.

Suitable for compressing corrosive, toxic, explosive, organic and pure gas etc.

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Dry screw vacuum pump

SDP series equal pitch screw vacuum pump Self conjugate line ( VOLM patented technology) Vacuum treatment capacity: 100-800m3/h. No use of water or oil, no mechanical seals, causing no pollution. Low noise, low vibration, good dynamic balance, no inertial force, high speed operation. Wide range of applications, with high vacuum performance. Long service life, cavitation proof and heat proof coatings.

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Dry screw vacuum pump

ESDP series variable pitch screw vacuum pump Perfect vacuum treatment capacity: 200-1500m3/h (Suction efficiency risen by 15%). Exhaust efficiency is improved (2 variable grades). Ultimate pressure: 1 * 10-2Torr (1.33Pa). The exhaust temperature is reduced by 50%. Power consumption is reduced by 30%. Long service life, PTFE, nickel and Hastelloy coating. Simple design structure, easy maintenance, low maintenance costs, no wearing parts

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High vacuum booster/ Roots vacuum pump

Keep fast pumping speed in the vacuum range of 0.1-1000Pa.

Impeller and shaft are integrally cast.

Can be combined with a variety of vacuum pumps to become vacuum unit.

Balance and leakage test are made for all products before delivering.

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Roots water ring vacuum pump unit

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Roots screw vacuum pump unit

Applicable industries

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Applicable industries

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Note

In choosing vacuum pump, whether the selection is correct or not will directly affect the life of the vacuum pump and the benefits of the user's business.

In practice, under the same conditions of work, the vacuum pump life may differ a lot and have several times to hundreds of times difference, so we remind you the following:

 1. You always can ask professional and technical personnel to recommend for you, or choose

by your successful experience, to obtain satisfactory results.2. If you need us to assist in the selection, Kindly Describe Your Requirements In Details Like: a) Working vacuum, suction capacityb) The pumping time when reach the working vacuum c) The volume of the vacuum system (or vacuum tank)d) The name, temperature, and concentration of the gas medium to be pumpede) Whether the gas is flammable, explosive and toxic and its phf) Whether the gas or liquid exhausted needs to be recycledg) Any special requirements of vacuum pump shaft seal, motor and other accessories.

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Units of pressure for your notes

Pascal(Pa)

Bar(bar)

Technical atmosphere

(at)

Atmosphere(atm)

Torr(Torr)

Pound-force persquare inch

(psi)

1 Pa ≡ 1 N/m2 10−5 1.0197×10−5 9.8692×10−6 7.5006×10−3 145.04×10−6

1 bar 105 ≡ 106 dyn/cm2 1.0197 0.98692 750.06 14.5037744

1 at 0.980665 ×105 0.980665 ≡ 1 kgf/cm2 0.96784 735.56 14.223

1 atm 1.01325 ×105 1.01325 1.0332 ≡ 1 atm 760 14.696

1 Torr 133.322 1.3332×10−3 1.3595×10−3 1.3158×10−3 ≡ 1 Torr; ≈ 1 mmHg 19.337×10−3

1 psi 6.895×103 68.948×10−3 70.307×10−3 68.046×10−3 51.715 ≡ 1 lbf/in2

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Thank you!

Yantai Volm Vacuum Technology Co., Ltd.

South plant: No.29 Yingfu Road,Fushan District, Yantai, Shandong, ChinaNorth plant: No.109 Hongfu Street,High-tech Industrial Zone,Yantai, Shandong,China

Lucy NiuPhone: +86 132 8795 2417Tel/Fax: +86 535 2135735/+86 535 2135736E-mail: volm_tec@yahoo.comWeb: http://www.volm.com.cn/en/