SPA

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SPA

SPA
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SPA

Features

Barrier pressure units of the SPA range perform all the functions of a barrier system essential for operating double seals (circulation and cooling of the barrier medium, pressurization of the barrier fluid and compensation of leakage).

Advantages

  • Temperature monitoring with a return line and tank thermometer
  • Barrier fluid directed through oil cooler
  • Reversible double filter (SPA1000: single filter)
  • Manual control of barrier fluid pressure
  • Automatic relief valve for reducing barrier fluid pressure at standstill
  • Level switch with contact for MIN level
  • Measuring instrument connections suitable for fitting contact switching devices (NG160)
  • Provision of an additional pressure connection for monitoring the pump discharge pressure (outside the circuit)

Operating range

The SPA range is available in 3 basic versions:
SPA1000:
Tank capacity 40 l, flow rate 6 l/min.
SPA2000:
Tank capacity 100 l, flow rate 12 l/min.
SPA3000:
Tank capacity 100 l, flow rate 23 l/min.

The three SPA ranges are designed for hydraulic oil with viscosity values of 12 to 90 mm2/s at operating temperature (tank temperature). The optimum viscosity of the class of the oil to be used has to be determined separately in accordance with the respective application.

Max. operating temperature in the tank 80 °C (176 °F) (return line max. 90 °C 194 °F)).

Materials

  • Storage tank, measuring instruments, cooler and piping are made of stainless steel
  • Fittings, distributor units, shut-off valves and tank lid are made of galvanized steel

Functional description

The barrier pressure for circulation is generated by a gear pump. The setpoint barrier pressure is set on an overflow valve in the mechanical seal return line. From this point on the barrier fluid flows back without pressure through a filter and a heat exchanger to the storage tank. To enable systems (pump, agitator) to be stopped without causing damage to the seal in the event of a malfunction (e.g. power failure, damaged motor, etc.), the barrier pressure unit can be fitted with a pressure accumulator unit. To prevent the pressure in the accumulator discharging to the pressureless storage tank, the return line has a pilot-operated check valve, and the supply line also has a simple check valve. The barrier pressure is retained for a limited time. However, no circulation takes place and no heat is dissipated from the mechanical seal.


Product variants

Version,
Designation		 Nominal pressure
max.
Barrier pressure
 Flow
rate
(l/min)		 Cooling
capacity (kW)1)		 Pressure
accumu-
lator
DHE		 Tank Overalll dimensions (mm) Net
weight
approx.
 Motor data
Nominal
capacity
(liters)		 Circulation
volume
(liters)		 Height Width Depth Nominal
power
(kW)		 Voltage,
Frequency		 Speed
(min-1)		 Ex-
Protection
SPA1015/
A01		 15 bar
(218 PSI)		 6 1.8 ■ 40 12 650 610 380 125 1 400 V,
50 Hz		 1,500 Atex II2G
Ex e IIT3 IP54
SPA1015/
A02		 15 bar
(218 PSI)		 6 1.8 40 12 650 610 380 125 1 400 V,
50 Hz		 1,500 Atex II2G
Ex e IIT3 IP54
SPA1040/
A01		 40 bar
(580 PSI)		 6 1.8 ■ 40 12 650 610 380 125 1 400 V,
50 Hz		 1,500 Atex II2G
Ex e IIT3 IP54
SPA1040/
A02		 40 bar
(580 PSI)		 6 1.8 40 12 650 610 380 125 1 400 V,
50 Hz		 1,500 Atex II2G
Ex e IIT3 IP54
SPA1090/
A01		 90 bar
(1,305 PSI)		 6 1.8 ■ 40 12 650 610 380 125 2 400 V,
50 Hz		 1,500 Atex II2G
Ex e IIT3 IP54
SPA1090/
A02		 90 bar
(1,305 PSI)		 6 1.8 40 12 650 610 380 125 2 400 V,
50 Hz		 1,500 Atex II2G
Ex e IIT3 IP54
SPA2020/
A01		 20 bar
(290 PSI)		 12 3.6 ■ 100 20 750 800 555 140 1 400 V,
50 Hz		 1,500 Atex II2G
Ex e IIT3 IP54
SPA2020/
A02		 20 bar
(290 PSI)		 12 3.6 100 20 750 800 555 140 1 400 V,
50 Hz		 1,500 Atex II2G
Ex e IIT3 IP54
SPA2050/
A01		 50 bar
(725 PSI)		 12 3.6 ■ 100 20 750 800 555 140 2 400 V,
50 Hz		 1,500 Atex II2G
Ex e IIT3 IP54
SPA2050/
A02		 50 bar
(725 PSI)		 12 3.6 100 20 750 800 555 140 2 400 V,
50 Hz		 1,500 Atex II2G
Ex e IIT3 IP54
SPA2120/
A01		 120 bar
(1,740 PSI)		 12 3.6 ■ 100 20 750 800 555 140 3.6 400 V,
50 Hz		 1,500 Atex II2G
Ex e IIT3 IP54
SPA2120/
A02		 120 bar
(1,740 PSI)		 12 3.6 100 20 750 800 555 140 3.6 400 V,
50 Hz		 1,500 Atex II2G
Ex e IIT3 IP54
SPA3020/
A01		 20 bar
(290 PSI)		 23 6.9 ■ 100 20 750 800 555 140 2 400 V,
50 Hz		 1,500 Atex II2G
Ex e IIT3 IP54
SPA3020/
A02		 20 bar
(290 PSI)		 23 6.9 100 20 750 800 555 140 2 400 V,
50 Hz		 1,500 Atex II2G
Ex e IIT3 IP54
SPA3050/
A01		 50 bar
(725 PSI)		 23 6.9 ■ 100 20 750 800 555 140 3.6 400 V,
50 Hz		 1,500 Atex II2G
Ex e IIT3 IP54
SPA3050/
A02		 50 bar
(725 PSI)		 23 6.9 100 20 750 800 555 140 3.6 400 V,
50 Hz		 1,500 Atex II2G
Ex e IIT3 IP54
SPA3120/
A01		 120 bar
(1,740 PSI)		 23 6.9 ■ 100 20 750 800 555 140 6.8 400 V,
50 Hz		 1,500 Atex II2G
Ex e IIT3 IP54
SPA3120/
A02		 120 bar
(1,740 PSI)		 23 6.9 100 20 750 800 555 140 6.8 400 V,
50 Hz		 1,500 Atex II2G
Ex e IIT3 IP54

1) With hydraulic oil ∆t = 10K.
SPA4000 versions for water and other media available as an option.

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