Benefits

Closed pressurised barrier fluid system compliant with all requirements of API 682, 4th edition*. Used for double mechanical seals (arrangement 3). The barrier fluid pressure is higher than the pressure in the pump's seal chamber. The pressure is generated by a bladder accumulator upstream of the seal.

Pressurisation by the bladder accumulator prevents the pressurised gas from dissolving in the barrier fluid, especially at high pressures. An integrated cooler** ensures an optimum operating temperature in the space between the two seals.

The pressure of the clean barrier fluid in the space between the two mechanical seals is higher than the process fluid pressure. As a result, clean barrier fluid will always be available between the seal faces, minimising wear and carrying the heat away from this area. This markedly increases the mechanical seal life.

*System to API 682, 3rd edition, also available

** Optionally available with water cooler or air cooler

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All products (387)

ACTAIR

ACTAIR

Double-acting pneumatic actuator for mounting on quarter-turn valves (butterfly valves or ball valves). Actuator flange to ISO 5211. Control ...

ACTELEC

ACTELEC

Electric actuators by BERNARD CONTROLS for direct mounting on quarter-turn valves (actuator flange to ISO 5211) with a manual gearbox of the ...

AKG-A/AKGS-A

AKG-A/AKGS-A
DN max:300 PN max:160

Gate valve to DIN/EN with flanged or butt weld ends, pressure seal design, body of forged or welded construction, non-rotating stem, split w ...

AKR/AKRS

AKR/AKRS
DN max:300 PN max:160

Swing check valve to DIN/EN with flanged or butt weld ends, pressure seal design, internally mounted hinge pin, body of forged and welded co ...

Ama-Drainer 400/500

Ama-Drainer 400/500
Q max:50.0 m³/hH max:22.5 m

Vertical single-stage fully floodable submersible motor pumps in close-coupled design, IP68, with or without level control, max. immersion d ...

Ama-Drainer 80 / 100

Ama-Drainer 80 / 100
Q max:130.0 m³/hH max:26.0 m

Vertical single-stage fully floodable submersible motor pump in close-coupled design, IP68, with or without level control, max. immersion de ...

Ama-Drainer N

Ama-Drainer N
Q max:16.5 m³/hH max:12.0 m

Fully floodable, vertical, close-coupled single-stage submersible motor pumps, IP 68, with or without level control, for a maximum immersion ...

Ama-Drainer-Box

Ama-Drainer-Box
Q max:46.0 m³/hH max:24.0 m

Stable above-floor plastic collecting tank or impact-resistant underfloor plastic collecting tank, with floor drain and odour trap, both wit ...

Ama-Drainer-Box Mini

Ama-Drainer-Box Mini
Q max:10.0 m³/hH max:6.5 m

Reliable and compact waste water lifting unit in a modern design with activated carbon filter meeting hygiene requirements and with shower c ...