Flomatic C601DW User Manual

Automatic Control Valve
Written Specification (Purchase Specs)

Flomatic Corporation

Model C601DW/CA601DW
CS601DW (Global EU Model)
Pump Control Valve
FULL PORTED

Sizes:
Globe: 1 1/2" - 30" (DN 40 - DN750)
Angle: 1 1/2" - 12" (DN40 - DN300)

Function:
The Pump Control Valve is installed on the discharge of booster pumps to eliminate downstream

pressure surges caused by starting and stopping the pump. The valve shall have a single chamber
and be normally closed. On pump start up a solenoid pilot is energized to open the valve at a
controlled adjustable rate. Separate flow control valves allow for opening and closing speeds to be
independently adjusted. The valve shall have a built in check feature to prevent reverse flow.

Main Valve Body:
The main valve shall be self contained hydraulically operated, single diaphragm-actuated globe or

angled body valve with no pistons operating the valve or pilot controls. The valve shall have four
major components: the body with seat installed, the cover with bushing installed, intermediate
lower body with bearing installed and the diaphragm assembly. The diaphragm assembly shall be
the only moving part. It shall form a seal between the intermediate body and cover chamber. An o­ring seal located in the intermediate chamber isolates the line pressure from the operating
pressure. Packing glands and stuffing boxes are not permitted. The valve is designed for use with
various types of pressure and/or electric controls to provide the desired control of pressure or flow
for a variety of water system applications.

Description:
The valve body, intermediate body and cover shall be of cast material (Ductile Iron) with no

fabrication or welding used in the manufacturing process.
The valve shall contain a resilient, synthetic rubber seat seal, with a rectangular cross-section

contained on three and one half sides by the spool and seat plate, and form a tight seal against a
single removable seat ring. No O-ring type seal (circular, square or quad type) shall be permitted
as the seating surface. The seat plate shall be contoured to permit the smooth transition of flow
and hold the seat seal firmly in place. The spool shall be of a sturdy one piece design capable of
withstanding opening and closing shocks.

The diaphragm assembly contains a non-magnetic 304 stainless steel stem of sufficient diameter
to withstand the high hydraulic pressure. It shall be fully guided at both ends and in the
intermediate body for the entire range of travel, in the cover and intermediate body by removable
bushings and in the valve by integral bearing in the valve seat ring. The valve shall be capable of
modulating from a tightly closed position to a full open position unless a static condition or pressure
reversal occurs. If a static or pressure reversal occurs the valve shall close to prevent reverse flow
regardless of the position of the diaphragm. The stem shall be drilled and tapped in the cover end

Flomatic Corporation
Glens Falls, NY 12801
Phone [phone]
Fax [phone]

C601DW Rev A (10/11)

March 30, 2003

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to receive and affix such accessories as may be necessary. The diaphragm assembly shall be the
only moving part and shall form a seal between the intermediate body and cover.

The non-wicking, flexible, FDA approved diaphragm shall consist of nylon fabric bonded with
synthetic rubber compatible with the operating fluid. The diaphragm must withstand a Mullins burst
Test of a minimum 600 psi per layer of nylon fabric. It shall be tested 100,000 times to insure
longevity. The diaphragm shall be fully supported in the intermediate valve body and cover by
machined surfaces with radius edges to prevent excessive wear as the diaphragm flexes. The
support must be no less than one-half of the total surface area of the diaphragm in either the fully
open or fully closed position.

The seat ring with integral bearing shall be a one-piece solid design and shall have a minimum of a
4° taper on the seating surface for a positive drip-tight shut off. The seat ring in 4" and smaller size
valves shall be threaded into the body. The valve seat ring in 6" and larger sizes shall be retained
by hex head bolts for ease of maintenance. The lower bearing of the valve stem shall be
contained concentrically within the seat ring and be exposed to the flow on all sides to avoid
deposits. Locating the valve body, intermediate body, and cover shall be by a machined locating
lip to insure proper alignment of the valve stem. Pinning of the cover to the intermediate body and
the intermediate body to the valve body shall not be permitted.

All necessary repairs and/or modifications other than replacement of the main valve body shall be
made possible without removing the valve from the pipeline. The valve manufacturer shall warrant
the valve to be free of defects in material and workmanship for a one year period from date of
shipment, provided the valve is installed and used in accordance with all applicable instructions.

The valve manufacturer shall be able to supply a complete line of equipment from 1-1/2" through
30" sizes and a complete selection of complementary equipment. The valve manufacturer shall
also provide a cavitation chart which shows flow rate, differential pressure, percentage of valve
opening, Cv factor, system velocity and if there will be cavitation damage.

Material Specification
Valve size:

Main Valve Body and Cover:
Main Valve Trim:
Connection:
Pressure Rating:
Temperature Range:
Rubber Material:
Coating:
Desired Options:

Flomatic Corporation
Glens Falls, NY 12801
Phone [phone]
Fax [phone]

C601DW Rev A (10/11)

March 30, 2003

2 of 3

Pilot Control System:
The pilot control shall have a four-way solenoid pilot with manual operator controlled by an external

electrical power source utilizing line pressure for operation. Solenoid shall have a NEMA IV
enclosure.

Limit Switch:
The adjustable limit switch indicator assembly shall be mounted on the main valve and be actuated

by the opening and closing of the main valve stem. The limit switch shall be fully adjustable along
any point of the main valves travel.

A direct factory representative shall be made available for start-up service, inspection and
necessary adjustments.

Material Specification for Pilot Control:
Pressure Rating:
Trim:
Rubber Material:
Tubing and Fittings:
Adjustment Range:
Operating Fluids:
Desired Options:

This valve shall be a Flomatic Model C601/CA601/CS601 Control Valve, as manufactured by
Flomatic Corporation, Glens Falls, NY 12801.

Flomatic Corporation
Glens Falls, NY 12801
Phone [phone]
Fax [phone]

C601DW Rev A (10/11)

March 30, 2003

3 of 3