Red Valve 40 Series User manual

IMPORTANT
Please take a moment to review this manual. Before performing any maintenance on the pressure sensors be sure the pipeline has been
de-pressurized. The improper installation or use of this product may result in personal injury, product failure, or reduced product life. Red
Valve Co., Inc. can accept NO liability resulting from the improper use or installation of this product. If you have any questions or prob-
lems, please call the customer service department at [phone]. We appreciate your comments. Thank you for choosing Red Valve.
Series 40 / Series 42 / Series 44 / Series 48 Pressure Sensors
Installation, Operation and Maintenance Manual
IOM RV06.02-1
February 2023

OPERATION
Red Valve Sensors are a sealed system.
These Sensors must be properly lled and sealed before any
pressure is applied. Do not loosen the retaining bolts on the Series
40, Series 48 or Series 42, or the end caps on Series 44. If this
equipment is removed, air can be introduced into the sensing uid,
which can cause inaccurate readings. Great care should be taken
to eliminate all air in the system. If the instrumentation is removed,
or the bolts or end caps loosened, the sensor should be properly
relled (see ll instructions).
Gauge cocks can be used to isolate the instrumentation, however,
when the instrument is removed there is going to be some uid lost,
possibly causing an inaccurate reading. Quick disconnect couplings
with two-way check valves, which minimize uid loss, can also be
furnished.
Red Valve sensors have very sensitive sleeves for more accurate
readings. The sleeves do not act as pressure snubbers. If a sensor
is used near a pump or equipment which produces frequent pres-
sure surges, a pressure snubber or liquid-lled gauge should be
used.
NOTE: If a pressure snubber is used, the sensor should be vacuum
lled to ensure complete removal of air from the instrumentation.
FLUID VOLUME: Red Valve Pressure Sensors are manufactured
with a small volume of sensing uid. Some types of pressure
switches require a large amount of sensing uid. If these switches
or multiple instruments are used, check the amount of uid required
to operate the instruments. The amount of usable uid in the sensor
is slightly less than the total uid volume. In sensors with elastomer
sleeves, the approximate amount of usable uid in cubic inches is
.25 x Nominal Pipe Size. If a larger volume of usable uid is needed,
an Extra Large Volume (XLV) sensor should be specied on the
purchase order.
INSPECTION: Red Valve Pressure Sensors should be periodically
inspected for wear or aging of the elastomer sleeve. Since there is
very little sleeve movement, the wear on the sleeve is minimal. The
sleeves are, however, subject to chemical attack from the process
uids. The entire sleeve should be periodically checked for cracks,
cuts and blisters and replaced if necessary. The inspection interval
should be determined by the severity of the service.
INSTALLATION
Standard Series 40 Sensors have ANSI 125/150 class bolting
dimensions, and at ange faces. Series 40W and 48W use
the sleeve face to act as the ange gasket. Only use at face
anges and tighten according to bolt grade and lubrication
used for the installation. The maximum working pressure of a
standard Series 40 is 225 psi. Series 40 sensors with higher
pressure ratings are also available. Series 48 Sensors t
between ANSI 125/150 anges.
1. Full face gaskets should be used, anges with
raised faces may distort the sensor and cause
an inaccurate reading.
2. Bolt the sensor between two anges and
tighten the bolts to the recommended torque.
Series 42 Sensors have a standard NPT end
connections and 1/4"-18 NPT gauge connections.
When installing the sensor in the pipe line, be
sure to tighten the NPT end connections by
gripping the end caps of the sensor.
CODE
A. Epoxy Fill H. Sleeve
B. Hex Socket I. Fill Fluid
C. Body J. End Cap
D. Retaining Bolts K. End Connection
E. Retainer Ring L. Lubricant
F. Flange M. 1/4" NPT
G. Sealant

Teon tape should be used on all NPT connections (end con-
nections and gauge connections).
NOTE: Great care must be taken not to strip the NPT end
connections if PVC end caps are used.
High Pressure Series 42 Sensors can have either a standard
NPT or Autoclave end and gauge connection. When installing
the sensor in the pipe line, be sure to tighten the end connec-
tions by gripping the end cap. Only use Teon tape on NPT
connections.
Series 44 Food Grade Sensors have Tri-Clamp® end connec-
tions, which are interchangeable with the Cherry Burrell "S"
type clamp connection.
1. The end gaskets of the Series 44 sensors are
molded into the sleeve. If the gasket needs to
be replaced, the whole sleeve must be replaced.
Make sure that the sensor is thoroughly sterilized
before installing the sensor in line.
2. Install the appropriate size clamp and tighten
to the recommended torque.
Tri-Clamp is a Registered Trademark of Ladish Co.
REPLACING SLEEVE
Replacement Sleeves are available in a wide variety of rubber
compounds. The following compounds are available: Buna-N,
Pure Gum Rubber, Butyl, EPDM, Neoprene®, Hypalon®and
Viton®. Food grade rubber is available in white: Neoprene,
EPDM, Buna-N and Butyl along with Black Viton.
Neoprene, Hypalon and Viton are Registered Trademarks of E.I.
DuPont.
1. Remove the sensor from the line.
2. Remove the gauge or instrumentation, to
avoid damaging the equipment.
3. Chip away the epoxy ll covering the pipe plug.
4. Remove the pipe plug.
5. Drain the uid from the sensor.
6. Remove the retaining bolts in the Series 40 and
Series 42, unscrew the end caps of the Series
42 and Series 44.
NOTE: Collapse the gasket/liner portion of the sleeve down to
the inside diameter on the Series 44, before unscrewing the
end caps.
7. Remove the sleeve with a blunt instrument.
8. Thoroughly clean the body and anges. Remove
any fragments of rubber or pieces of Teon
tape. Loose fragments may clog gauges or
instruments.
9. Inspect metal parts for sharp edges. Remove
any sharp edges with a ne metal le or ne
grinding wheel. Be sure to remove only enough
metal to smooth surface.
10. Clean the new sleeve and body with a compatible
uid. Thoroughly clean and sterilize the Series
44, body, end caps and sleeve.
11. Install the new sleeve. Be very careful not to
damage the sleeve with sharp instruments
during installation.
NOTE: Series 42 sleeves maybe lubricated with petroleum
jelly (Not compatible with EPDM, natural gum rubber, SBR,
and Butyl at any temp. PVC and PP at elevated temp), soapy
water or another compatible uid to ease installation. Do not
lubricate any other sleeves at this stage.
12. Series 40/48: Bolt the anges of the sensor
together until no gap exists between the anges
and the body. Be sure to tighten all of the bolts
evenly.
NOTE: Sensors with working pressures over 5,000 psi must
have the antiextrusion rings installed before the anges are
assembled.
Teon Series 40/48: Apply a layer of sealant to both sides
of the sleeve anges. Use Dow Corning Silicone Sealant,
number RTV-732-Clear, or equivalent.
Series 42: Lubricate the exposed faces of the sleeve with pe-
troleum jelly (Not compatible with EPDM, natural gum rubber,
SBR, and Butyl at any temp. PVC and PP at elevated temp),
or other compatible lubricant, and screw the end caps into the
body. Tighten the end caps until they are snug.
High Pressure Series 42: Be sure to install the anti-extrusion
rings in sensors with 5000 PSI and greater pressure ratings.
For bolted models, tighten the bolts until there is no gap
between the body and the end caps. Be sure to tighten all of
the bolts evenly.
Series 44 Food Grade Sensor: Lubricate the exposed faces
of the sleeve and the sleeve's outside diameters. Collapse the
gasket/liner area so that the end caps can be screwed on. Be
sure that the sleeve is fully engaged in the body before the
end cap is completely tightened. The end cap should bottom
out on the body when it is fully tightened. Use only approved
lubricants and completely sterile assembly conditions.
13 Reinstall the gauge or instrument. Use three
layers of Teon tape on the NPT connection.
For food grade applications use only approved
sealants.
14. Fill sensor per the instructions below.
Recommended ll uids include: a 50/50 mix
of ethylene glycol and water, distilled water,
FDA approved Silicone oil (Dow Corning 200-
350). Fluorolube, vegetable oil and mineral oil.
NOTE: For food grade applications use only sterile
ll equipment.

STORAGE
Complete sensors and replacement sleeves should be stored in
a cool, dark place. Exposure to heat, extreme cold or sunlight
will damage sleeves. The sleeves also should not be exposed
to electrical equipment which produces ozone, because, this will
damage the sleeves. Red Valve will not be liable for parts which
are improperly stored.
FILL PROCEDURES
GRAVITY FILL
1. Turn sensor as shown in Figure or place the gauge or
instrument in the bottom connection if the sensor is still
in line. If a sensor is lled while it is still in line, be sure that
there is no pressure in the line.
NOTE: Some types of pressure switches will not operate
unless they are mounted upright.
2. Remove the NPT plug. It may be necessary to remove an
epoxy ll covering the plug.
3. Pour ll uid into the port until the threaded hole is
half full.
4. Press on the inside diameter of the sleeve in several
places. Bubbles should be visible in the top NPT con-
nection, and the uid level will decease. The sensor
may also be rotated approximately 45˚ if possible, this will
help to get air bubbles out of the gauge or instrument.
5. Repeat steps 3 and 4 until the uid level in the NPT con-
nection does not change and no bubbles appear.
6. Fill the NPT connection to within a 1/4" inch
of the outside diameter of the sensor.
7. Wrap the pipe plug with three layers of Teon tape. Insert
the plug into the port and tighten.
VACUUM FILL
1. Connect the sensor to the assembly shown.
2. Close valve #2 and open valve #1.
3. Pull a 20" inch of mercury vacuum for at least
2 minutes on the sensor.
NOTE: If a pressure snubber or pulsation dampener is
used, keep the vacuum on the sensor for an additional 3
minutes.
4. Close valve #1 and open valve #2, this allows the ll uid to
be pulled into the sensor.
5. Remove the assembly and ll the NPT connection to within
1/4" inch of the outside diameter of the sensor.
6. Wrap the pipe plug with three layers of Teon tape. Insert
the plug into the port and tighten.
If the gauge or instrument can not be installed in the bottom
connection, ll the sensor as described. Then turn the in-
strument upside down and completely ll it with uid. Cover
the ends with Saran wrap and wrap teon tape around the
threads. Puncture the Saran wrap with a pin and install the
instrument into the gauge connection.
Red Valve • 750 Holiday Drive, Suite 400, Pittsburgh, PA 15220 • 412-279-0044 • [email protected] • RedValve.com
© 2023 Red Valve Company

Limited Warranty
Red Valve Company (“Seller”) manufactured products, auxiliaries and parts thereof that we manufacture for a period of twenty-four (24) months from
date of shipment from Seller’s factory, are warranted to the original purchaser only against defective workmanship and material, but only if properly
stored, installed, operated, and serviced in accordance with Seller’s recommendations and instructions.
For items proven to be defective within the warranty period, your exclusive remedy under this limited warranty is repair or replacement of the defective
item, at Seller’s option, FCA Incoterms 2020 Seller’s facility with removal, transportation, and installation at your cost.
Products or parts manufactured by others but furnished by Seller are not covered by this limited warranty. Seller may provide repair or replacement
for other’s products or parts only to the extent provided in and honored by the original manufacturer’s warranty to Seller, in each case subject to the
limitations contained in the original manufacturer’s warranty.
No claim for transportation, labor, or special or consequential damages or any other loss, cost or damage is being provided in this limited warranty.
You shall be solely responsible for determining suitability for use and in no event shall Seller be liable in this respect.
This limited warranty does not warrant that any Seller product or part is resistant to corrosion, erosion, abrasion or other sources of failure, nor does
Seller warrant a minimum length of service.
Your failure to give written notice to us of any alleged defect under this warranty within twenty (20) days of its discovery, or attempts by someone other
than Seller or its authorized representatives to remedy the alleged defects therein, or failure to return product or parts for repair or replacement as
herein provided, or failure to store, install, or operate said products and parts according to the recommendations and instructions furnished by Seller
shall be a waiver by you of all rights under this limited warranty.
This limited warranty is voided by any misuse, modification, abuse or alteration of Seller’s product or part, accident, fire, flood or other Act of God, or
your failure to pay entire contract price when due.
The foregoing limited warranty shall be null and void if, after shipment from our factory, the item is modified in any way or a component of another
manufacturer, such as but not limited to; an actuator is attached to the item by anyone other than a Seller factory authorized service personnel.
All orders accepted shall be deemed accepted subject to this limited warranty, which shall be exclusive of any other or previous warranty, and this
shall be the only effective guarantee or warranty binding on Seller, despite anything to the contrary contained in the purchase order or represented by
any agent or employee of Seller in writing or otherwise, notwithstanding, including but not limited to implied warranties.
THE FOREGOING REPAIR AND REPLACEMENT LIMITED WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, OBLIGATIONS AND
LIABILITIES, INCLUDING, BUT NOT LIMITED TO, ALL WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE OR OF MERCHANTABILITY
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DESIGN, SUITABILITY FOR USE, INSTALLATION OR OPERATIONS. NEITHER ANY PERFORMANCE OR OTHER CONDUCT, NOR ANY ORAL OR
WRITTEN INFORMATION, STATEMENT, OR ADVICE PREPARED BY SELLER OR ANY OF OUR EMPLOYEES OR AGENTS WILL CREATE A
WARRANTY, OR IN ANY WAY INCREASE THE SCOPE OR DURATION OF THIE LIMITED WARRANTY.
Limitation of Liability
IN NO EVENT SHALL SELLER BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL, PUNITIVE, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, DAMAGE TO OR LOSS OF OTHER PROPERTY OR EQUIPMENT, BUSINESS INTERUPTION, COST OF
SUBSTITUTE PRODUCTS, LOSS OF TIME, LOSS PROFITS OR REVENUE, COST OF CAPITAL, LOSS OF USE, OR DIMINUTION IN VALUE)
WHATSOEVER, AND SELLER’S LIABILITY, UNDER NO CIRCUMSTANCES, WILL EXCEED THE CONTRACT PRICE FOR THE GOODS AND/OR
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LIMITED WARRANTY DESCRIBED ABOVE, MUST BE COMMENCED WITHIN 12 MONTHS AFTER THE DATE OF SALE.
Sales and Service
For information about our worldwide locations, approvals, certifications and local representative:
Web site: RedValve.com E-Mail: [email protected]
750 Holiday Drive, Suite 400, Pittsburgh, PA 15220 • Phone: [phone]
Red Valve Company reserves the right to incorporate our latest design and material changes without notice or obligation.
Design features, materials of construction and dimensional data, as described in this manual, are provided for your information only
and should not be relied upon unless confirmed in writing by Red Valve Company. Certified drawings are available upon request.
February 2023