Primary fluid systems ECO-110, ECO-200, ECO-125, ECO-150, ECO-25 Instruction Manual

ECO Valve

Uses:

• Back Pressure valve

• Anti-Siphon valve

• Pressure Sustaining valve

• Pressure Relief valve

Instruction Manual

1” (High Flow), 1 ¼”, 1 ½” and 2” (“C” Series)

ECO-110, ECO-125, ECO-150 and

ECO-200

06/2017

Rev. 4

Please note:

This instruction manual provides detailed information and instructions that must be read, understood and
followed to ensure that the equipment is installed, operated and serviced in an appropriate manner.
Failure to do so before using may result in hazardous consequences and/or improper operation.

Manufactured by:

PRIMARY FLUID 1050 Cooke Blvd., Burlington, Ontario, L7T 4A8

SYSTEMS INC. Tel: [phone] Fax: [phone]

Call Toll Free: 1-866-324-6422

E-Mail: [e-mail]

http:www.ecovalve.ca

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Introduction

The following instructions are to provide information on the Installation, operation and
maintenance of ECO Valve, diaphragm style valves, manufactured by Primary Fluid Systems
Inc. The valves are designed to help improve the performance and safe operation of most
positive displacement pumps.

Various materials of construction are available dependent on the requirements of the
application and the type of fluids being transferred.

The valve(s) are factory set at 50 PSIG with a field adjustment range of 7-150 PSIG. Other
factory set pressure ranges (within the range of the valve) is available upon request.

Features of ECO Valve:

• PVC, PP, CPVC (Corzan), PVDF and 316L S/S wetted construction

• PVC diaphragm with PVC valve bodies

• PTFE laminated to EPDM backer diaphragm standard on all other material

• Optional Viton or EPDM wetted diaphragm materials

• only one elastomer is present in the wetted end

• Turn down handle limits pressure to 150 PSIG

• Locking adjustable pressure screw

• Color-coded caps indicate size at a glance

• Built-in gauge port on both sides of valve body (pre-drilled & threaded optional)

• Specially designed spring provides consistent pressure adjustments through the range

(7-150 PSIG)

• Eco valve is available in several configurations to meet your needs, such as threaded,
socket, flanged, union in DIN, BSPT and American Standard

• Built-in downstream manual air release, for ease of pump priming

• Built-in anti-siphon

Back Pressure Valve/Anti-siphon:
Diaphragm Back Pressure Valves serve two primary functions. The first is to provide a

constant discharge pressure on the pump, which improves the performance, efficiency and
consistency of the delivered volume. Secondly, the valve performs as an anti-siphon
mechanism against positive or negative pressures in the downstream line. The valve is
designed to allow for the venting of air into the downstream pipeline. This provides for easier
priming of metering pumps that function under a suction lift. This is accomplished by a simple
adjustment of the handle.

The valve comes complete with a gauge port located on both sides of the valve body; the ports
are normally not drilled or tapped for a gauge connection. (See gauge installation
instructions on page 5)

Caution:
The gauge port is solely for the installation of the gauge and must not be used for the
bleeding or venting of the system. Improper operation of the valve and/or hazardous
consequences could result. (See gauge installation instructions)

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Back Pressure /Pressure Sustaining Valve: Reason for Selection and Use
Metering pumps having an atmospheric discharge system pressure or less than 20 psi will

benefit from the installation of a back pressure control valve. Metering pumps in general
require downstream back pressure to ensure smoother function of the discharge check
assemblies, which enhances the accuracy of the discharge flow.

Pressure Relief Valves:
Diaphragm Pressure Relief Valves are designed to relieve excess line pressure that exceeds

the set pressure of the valve. This protects the system piping from overpressure that could
result in hazardous leakage and/or damage to the pump and other system components.

The Pressure Relief Valves are normally recommended to be set between 5 and 10 PSIG
above the system operating pressure.

When ECO valves are used as a pressure relief valve it is a two port valve, thus designed for
off line installations. This requires the valve to be installed on a tee branch of the discharge line
of the pump for piping back to supply tank or feed side of pump.

The valve comes complete with a gauge port located on both sides of the valve body; the ports
are normally not drilled or tapped for a gauge connection. (See gauge installation
instructions on page 5)

Caution:
The gauge port is solely for the installation of the gauge and cannot be used for the
bleeding or venting of the system. Improper operation and/or hazardous consequences
could result. (See gauge installation instructions)

Pressure Relief Valves: Reason for Selection and Use

Most positive displacement pumps require the use of a pressure relief valve; it should always
be installed on the downstream side of the pump to protect the system from over pressure
which can cause pipe leakage and/or rupture. There should not be any type of valve located
between the pump discharge or the pressure relief valve, for the pressure relief valve to
function properly.

Installation and Maintenance of Back Pressure Valves:
Back pressure control valves are installed on the discharge line of the pump. The valve should

be located as reasonable close as possible of the pump discharge to ensure check valve
seating. When pumping to a process line without an injection valve, the back pressure valve
should be installed as close as possible to the injection point to prevent siphoning.

When used in conjunction with a pressure relief valve, always locate the back pressure valve
on the downstream side of the relief valve.

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The valve is supplied from the factory pre-set at 50 psig. To increase the pressure setting,
back off the lock nut located beneath the colour coded bonnet cap. Turn the Allan bolt using a
5/16” or #8 hex key clockwise to increase pressure setting or counter clockwise to reduce
pressure setting. Approximately one (1) full turn of the handle is equal to 10 psig.

If maintenance is required on the valve:

1. Ensure that the valve is properly isolated from the line, not under pressure and
properly flushed of chemical before proceeding to disassembly.

2. Turn Allan bolt on the top of valve, counterclockwise until all spring pressure is released
before proceeding to undo retaining nuts, to remove top of valve for diaphragm
replacement.

3. All working components ie. diaphragm, spring can be accessed by removing the four
retaining bolts located on the bottom of the valve (item # 9 of parts breakdown).

4. When replacing a PTFE coated diaphragm, ensure the PTFE coated side of the
diaphragm is facing down when viewed from the top of the valve. The installed
diaphragm also functions as the body seal. (Torque nuts to 40 inch pounds when
reassembling )

Installation and Maintenance of Pressure Relief Valves:
Pressure relief valves are installed on the discharge line of a pump and should be located as

close as possible to the metering pump. The valve is of an two port design and is required to
be installed on a branch tee for piping back to the supply tank or feed side of the pump.

Never install shut-off/isolation valves between pump discharge and in-line pressure relief
valves. When using in conjunction with a back pressure control valve, always install back
pressure valve downstream of pressure relief valve. The relief port on the pressure relief valve
should be piped back to the feed tank or suction side of the pump (see typical installation
schematics).

Caution: The plastic valve bodies have standard threads, which are tapered.

When installing pipe into the body, hand tighten only to avoid cracking.

Gauge Installation Instructions:

For the convenience of pressure setting and reading, there are two ports provided one on
either side of the valve body. These ports are normally not drilled or tapped unless initially
ordered that way. To drill and tap the ports it is recommended that you first disassembly the
valve so as to not leave any foreign particles in the valve. You will require a 1/8” or 3.264 mm
drill bit to drill out the centre point of the gauge port opening into the body of the valve. The
port is already the correct diameter for the tapping of a ¼” or M10 thread. It is recommended
that you use a regular tap then a bottoming tap to open the port up, this will allow for the
proper number of gauge threads.