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TRIVAC® BCS Two-Stage Rotary Vane Vacuum Pumps

The TRIVAC® BCS pumps are oil-sealed vacuum pumps operating according to the rotary vane principle. Oil which is injected into the pump chamber is used for sealing, lubrication and cooling purposes. The pump body is assembled from individual parts without sealing components. The parts are pinned in order to ensure easy disassembly and reassembly of the parts. The TRIVAC® BCS are available with a three-phase motor (The North and South American TRIVAC® D 16/25 BCS are also available with single-phase motors). The motor is connected to the pumping section via an elastic coupling. In addition, the TRIVAC® BCS is ready for system integration (adaptable to different applications).

Advantages to the User

Compact design
- Low noise operation with hardly any
vibrations
- Built-in oil pump
- Continuous operation even at
1000 mbar (750 Torr)
- Pressure-lubricated sliding bearings
- Anti-suckback valve controlled via
the oil pressure, no backstreaming
of oil, independent of the operating
mode, with or without gas ballast
- Low backstreaming of oil within the
pump
- High pumping speed down to
ultimate pressure
- Either vertical or horizontal intake
and exhaust ports
 - All controls as well as the oil sight
glass are located on the face side
- Low power consumption
- Produces very little heat
- Exchangeable inner section
- Main flow oil filters may be fitted
- Very long service life
- Modular system
- Service-friendly
- Built-in temperature switch for
temperature monitoring
- Corrosion protected – the use of
yellow metals has been avoided;
only grey cast iron, surface treated
aluminum, steel and stainless steel
is used.
- Double shaft seal		 Typical Applications
- In all areas of vacuum engineering
- Pumping of corrosive or aggressive
media
- Production of semiconductors and
in the area of chemistry
- Research and production
- Generation of rough and medium
vacuum
- Backing pump in pump sets, i.e. in
connection with Roots, diffusion,
turbo or cryo pumps		 Supplied Equipment
- Small flanges
- Centering, sealing and clamping
rings
- The intake port includes a dirt trap
BCS pumps are supplied with a filling
of mineral oil N 62, HE-200 oil or perfluoropolyether
(PFPE) synthetic oil.

Technical Data (50 Hz)Trivac® D16BCSTrivac® D25BCS Trivac ® D40BCS Trivac® D65BCS
Two-StageTwo-StageTwo-StageTwo-Stage
Nominal pumping speed
50/60Hz m3/h (cfm)
Pumping speed 50/60Hz m3/h (cfm)
Ultimate partial pressure
without gas ballast mbar (Torr)
Ultimate total pressure
without gas ballast mbar (Torr)
Ultimate total pressure
with gas ballast (Torr)
Water vapor tolerance mbar (Torr)
Water vapor capacity gm/h
Oil filling, max. / min. l (qt)
Noise level to DIN 45 635,
without / gas ballast dB(A)
Admissible ambient temperature °C (°F)
Motor rating W (HP)
Nominal speed 50/60 Hz rpm
Type of protection IP
Weight kg (lbs)
Connections (Intake and Exhaust) DN
18.9 (11.1)/22.7(13.4)
16.5 (9.7)/19.8(11.7)

10-4 (≤ 0.75 x 10-4)

≤ 2.5 x 10-3
(≤ 1.9 x 10-3)
≤ 5 x 10-3
(≤ 3.8 x 10-3)
25 (18.8)
305
0.45 / 1.0 (0.5/1.1)
52/54
12 to 40 (54 - 104)
550 (0.75)
1500/1800
55
26 (57.3)
25 KF
29.5 (17.4)/35.4(20.9)
25.7 (15.1)/30.8(18.2)

10-4 (≤ 0.75 x 10-4)

≤ 2.5 x 10-3
(≤ 1.9 x 10-3)
≤ 5 x 10-3
(≤ 3.8 x 10-3)
25 (18.8)
476
0.6 / 1.4 (0.6/1.5)
52/54
12 to 40 (54 - 104)
750 (1.0)
1500/1800
55
32 (70.6)
25 KF
46 (27)/55(32.5)
40 (24)/48(28)

10-4 (≤ 0.75 x 10-4)

≤ 2.0 x 10-3
(≤ 1.5 x 10-3)
≤ 5 x 10-3
(≤ 3.8 x 10-3)
40 (30)
1184
1.7 / 2.6 (1.8/2.7)
57/59
12 to 40 (54 - 104)
2200 (3.0)
1500/1800
55
68 (150)
40 KF
75 (44)/90(53)
65 (38)/78(46)

10-4 (≤ 0.75 x 10-4)

≤ 2.0 x 10-3
(≤ 1.5 x 10-3)
≤ 5 x 10-3
(≤ 3.8 x 10-3)
40 (30)
1925
2.0 / 3.3 (2.1/3.5)
57/59
12 to 40 (54 - 104)
2200 (3.0)
1500/1800
55
80 (176.4)
40 KF