Red Valve 40W 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 problems,
please call the customer service department at (412) 279-0044. We appreciate your comments. And thank you for choosing Red Valve.
Series 40W Pressure Sensor
Installation, Operation and Maintenance Manual
IOM RV06.02-2
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
relled (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 specied 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.
STORAGE:
Complete sensors and replacement sleeves should be stored in
a cool, dark place. Exposure to heat, extream sunlight will dam-
age sleeves. The sleeves also should not beexposed to electrical
equipmnet which produces ozone, because, this will damage the
sleeves. Red Valve will not be liable for parts which are improperly
stored.
SLEEVE REPLACEMENT:
1. Ensure that line is de-pressurized!
2. Remove sensor from line.
3. Remove instrumentation to prevent damage (50)
4. Remove pipe plug. (3A)
5. Drain the uid from the sensor.
6. Peel back rubber sleeve ange to expose screws.
7. Remove end plate screws. (88A)
8. Remove end plates. (88)
9. Clean all components thoroughly. Remove any
fragments of rubber or pieces of Teon tape.
Loose fragments may clog guages or instruments.
10. Inspect metal parts for sharp edges.
11. Remove any sharp edges with a ne metal le or
ne grinding wheel. Be sure to remove only enough
metal to smooth surface.
12. Flush out guage.
13. Collapse new sleeve, (1) push throu housing (2)
and work seal lips into housing groove.
14. Bend over outer sleeve anges and reinstall ange
rings (88). Do not pinch seal lips.
15. Replace end plate screws. (88A)
NOTE: Some types of pressure switches will not operate unless they
are mounted upright.
QUANTITY
ITEM RING SIZE
1 1-1/2 2 2-1/2 3 4 6 8 10 12 14
88A 12 12 12 12 12 8 8 16 16 24 24
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 Teon 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 instrument upside down and completely ll it with
uid. Cover the ends with Saran wrap and wrap teon
tape around the threads. Puncture the Saran wrap with a
pin and install the instrument into the gauge connection.
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 Teon tape. Insert
the plug into the port and tighten.
ITEM DESCRIPTIONS REQ'D
1 SLEEVE 1
2 HOUSING 1
3A PLUG 1
50 GUAGE 1
88 END PLATE 2
88A SCREW, END PLATE *
50B ADAPTER *
86 PROTECTIVE COATING 2 COATS
89 SENSING LIQUID AS REQ'D
NOTE:
ADAPTER APPEARS ON 2-1/2" THRU 14".
QUALITY IS 1.
Tube I.D. Matches SCH.
40 Carbon Steel Pipe
Unit has gaskets
molded in. No additional
gaskets required
Sensor ts inside bolt pattern of
mating anges
A-DIA.
B
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
OR OTHERWISE, EXPRESSED OR IMPLIED IN FACT OR BY LAW, AND STATE SELLER’S ENTIRE AND EXCLUSIVE LIABILITY AND YOUR
EXCLUSIVE REMEDY FOR ANY CLAIM IN CONNECTION WITH THE SALE AND FURNISHING OF SERVICES, GOODS OR PARTS, THEIR
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
SERVICES FOR WHICH LIABILITY IS CLAIMED. ANY ACTION FOR BREACH OF CONTRACT BY YOU, OTHER THAN RIGHTS RESPECTING OUR
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:
750 Holiday Drive, Suite 400, Pittsburgh, PA 15220 • Phone: 412-279-0044
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
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