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Dekker Vacuum Technologies, Inc. – DuraVane/12 5

Discharge Piping

Do not discharge the exhaust gases from the pump or system into the area where the system is

installed. Vapors pulled over from the process could be hazardous. Discharge piping should be at least

the size of the pump discharge. DEKKER recommends the installation of a dripleg with tee on the

discharge line, to prevent any condensed vapors discharged by the pump from draining back into the

pump oil reservoir. See diagram below.

For pumps and systems operating in parallel on a common discharge, we recommend the installation

of a suitable check valve close to the discharge. When discharging more than one unit in a common

discharge line and/or over a long distance, oversize pipe accordingly.

Discharge piping diagrams

Following are the inlet and discharge connection sizes for the different pump models:

PUMP

MODEL

INLET SIZE

DISCHARGE SIZE

RVL002H

3/8” hose

RVL003H

3/8” hose

RVL006H

3/8” NPT

RVL010H

½” NPT

RVL013H

½” NPT

½”NPT

RVL020H

½” NPT

RVL030H

1” NPT

1 ¼” NPT

RVL050H

1 ½”NPT

1 ½” NPT

RVL070H

1 ½”NPT

RVL075H

1 ½” NPT

1 ½”NPT

RVL110H

1 ½” NPT

RVL125H

2” NPT

RVL145H

2” NPT

RVL200H

2” NPT

RVL215H

2” NPT

RVL300HH/LH

3” NPT

RVL400HH/LH

3” NPT

RVL550HH/LH

4” NPT

3” NPT

RVL700HH/LH

4” NPT

3” NPT

RVL020W

½” NPT

RVL030W

1” NPT

1 ¼” NPT

RVL050W

1 ½” NPT

1 ¼” NPT

RVL070W

1 ½” NPT

1 ¼” NPT

THEORY OF OPERATION

DuraVane lubricated rotary vane pumps are single-stage pumps with an integrated closed loop oil

circulation system. The construction is heavy-duty and compact, resulting in a small footprint. The high-

tech vane material provides 50,000 hours vane life. The pumps have an internally mounted inlet check

valve. Pumps are direct driven with flange-mounted motor. The standard design is air-cooled with a

high-efficiency multi-stage exhaust filter that results in 99.9% oil mist removal.

Pump can operate with closed suction without overheating

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