Red Valve Tideflex Series User manual

IMPORTANT
Please take a moment to review this manual. Before performing any maintenance on the valve be sure the pipeline has been depres-
surized. The improper installation or use of this product may result in personal injury, product failure, or reduced product life. Tideex®
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 [phone]. We appreciate your comments. Thank you for choosing Tideex®.
The revolutionary design of the Series 37G Inline Check Valve provides
superior backow protection. This unique "duckbill" design eliminates
costly backow from oceans, rivers, and other waterbodies and piping
systems.
The Series 37G is available in a wide variety of elastomers and is
designed to meet your exact ow specications.
The cuff of the Series 37G Valve is constructed to have the same outside
diameter as the inside diameter of the mating pipe. This allows the valve
to be inserted into the pipe and held in place by means of an internal
expansion clamp. Tideex®recommends pinning all Series 37G
valves for added security and stability.
The 37G effectively has a zero face-to-face dimension because they
t completely inside of the pipe. No modication of piping is required
provided adequate pipe length exists.
• Simple Design
• Cost Effective
• No Hinges, Levers or Springs
• Minimal Routine Maintenance
Series 37G Inline Check Valve
Installation, Operation and Maintenance Manual
IOM RV09.02-5
February 2023
Red Valve • 750 Holiday Drive, Suite 400, Pittsburgh, PA 15220 • 412-279-0044 • [email protected] • RedValve.com
© 2023 Red Valve Company

INSTALLATION
1. Inspection of Valve
Check inside diameter of pipe section for rough or damaged
areas. Surface should be uniform and relatively smooth. Long
gouges or cracks may allow water to pass and should be lled
prior to installation. The exterior of the Series 37G should
have a rough texture resembling a cloth pattern. This will help
the valve grip the walls of the pipe.
2. Valve Orientation
The valve shall be installed with the bill in the vertical position.
Valves to 18" (nominal) are supplied with a single clamp. The
clamp turnbuckle should be oriented at top dead center.
Valves 24"—48" (nominal) are supplied with two clamps. The
turnbuckles should be oriented 180˚ apart. Valves 60"—72"
(nominal) are supplied with three clamps. Turnbuckles should
be oriented 120˚ apart.
3. Pipe Dimensions
Every Series 37G is designed and built to t into a specic
pipe inside diameter. Different pipe materials such as
concrete, HDPE, steel, and PVC have different. I.D.
dimensions for the same nominal pipe size. Do not attempt
to install a Series 37G into a pipeline for which it was not
intended.
4. Preparation
The Series 37G uses expanding clamp(s) to exert pressure
outwards on the walls of the valve to "wedge" it in place within
the pipe. The walls of the pipe should be clean and free of
debris prior to installation.
5. Securing
The valve should be inserted fully into the pipe so that no
part of the cuff or bill extends outside the pipe. Ensure that
the valve is not "slanted" at an angle, with the bill pointing
upwards or downwards. The valve centerline should be
parallel to the pipe centerline.
Tideex®recommends pinning the Series 37G on all
installations. See below.
Four pre-drilled holes are provided in each expansion clamp.
At least one clamp should be pinned. On exposed pipe, holes
can be drilled through the valve and pipe, and a bolt run
through secured with a nut. For buried pipe, silicon or similar
sealant should be used to seal bolts.
Flow
Flow
NEVER...
Install the Valve at
An Angle
NEVER...
Install the Valve
Backwards
NEVER...
Use Sharp Tools on
Rubber
NEVER...
Exceed Design Back Pres-
sure

INSTALLATION NOTES FOR
SERIES 37G
A. It is important that the Series 37G are installed level within
the pipe. An equal amount of space must exist above and
below the end of the bill. The Series 37G may "gap open" it
installed improperly.
B. The bill of the Series 37G must have room to expand
outwards, while bottom of the bill area rises. The area around
the bill must be kept free of debris to allow the bill to close in
order for the valve to seal properly.
C. The Series 37G effectively reduces the inside diameter of
the pipe in which it is installed, creating a restriction. It may
also create a "ledge" inside the pipe, causing standing water.
D. Back pressure in excess of the maximum line pressure
may invert the sleeve and cause valve failure.
E. Should the conditions that the Series 37G was designed for
change, (line pressure, back pressure, chemical compatibility)
the performance of the valve may suffer.
Nominal Pipe I.D./Valve Size* Maximum Bill Height Maximum Length Maximum Back
(A) (B) (C) Pressure (psi)
6" 5-7⁄8" 11" 75
8" 7-3⁄4" 12-1/4" 75
10" 9-3⁄4" 15-1/4" 65
12" 11-3⁄4" 18-1/4" 65
14" 13-1/2" 21-1/4" 50
16" 15-1/2" 22-3/4" 50
18" 17-1/2" 23-3/4" 25
20" 19-1/2" 31-3/4" 25
24" 22" 37" 25
30" 27" 40-1/2" 15
36" 34" 46-3/4" 15
42" 40" 49" 10
48" 45" 51-1/2" 10
60" 57" 63-7/8" 10
72" 69" 72-1/2" 10
*For pipe I.D.'s other than the nominal pipe I.D.'s shown, consult factory to verify 37G dimensions.
BA
C

MAINTENANCE
1. Inspection
Valves should occasionally be inspected for damage, wear,
and buildup of debris. The frequency of the inspections should
be determined by the severity of the service and the environ-
ment in which it operates.
The clamp should be checked for proper tension, and be
sure that the inside of the valve is free of debris. Soft marine
growth is normal on valves in submerged applications, and
because hard marine growth such as barnacles will not bond
well to the Tideex®they can be easily removed. Also insert
pins to ensure they are tight.
STORAGE
If your Series 37G is to be stored for a period of time prior
to installation, the following storage guidelines will help to
preserve the valve and assure a trouble-free installation.
1. Store in a clean, cool, dry location. Avoid exposure to
light, electric motors, dirt, or chemicals.
2. Store valve vertically on oor or pallet.
3. Store valve to prevent other items from
contacting check sleeve to prevent possible damage.
4. Store this manual with the valve, so that
is readily available at time of installation.
TROUBLESHOOTING GUIDE
SLEEVE INVERTED
• Excessive back pressure, water surge, or water hammer.
LEAKING AROUND PERIMETER OF VALVE
• Tighten Clamp
• Check for cracks and holes in surface of pipe
BACKFLOW
• Debris lodged inside bill
• Debris built up beneath bill
Cuff
Saddle
Bill
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:
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