4-RFB 2025-061 Addendum No. 1.pdf

Purchasing Services Post Office Box 2570

Waco, Texas 76702-2570 Phone: 254-750-8098

Fax: 254-750-8063 melaniew@wacotx.gov

CITY OF WACO www.waco-texas.com

Date: 08/21/2025

RFB No: 2025-061 Commodity: Riverside Actuators Purchasing Agent: Melanie Wade

Closing Time: 2:00 P.M. CST, Thursday, September 4, 2025 Opening Time: 2:01 P.M. CST, Thursday, September 4, 2025

RFB Opening Location: Via Zoom Video and Dial In

Addendum No: 1 Questions and Answers

The above-mentioned RFB has been changed. Sign and return addendum to the Purchasing Office by the closing time and date with your RFB response. Returning this page signed by your authorized agent will serve to acknowledge this change. All other requirements of the invitation remain unchanged. If you have any questions, please call or stop by the Purchasing Office at the above address.

Firm:____________________________________________________________________________________

Address___________________________________________________________________________________

Signature of Person Authorized to Sign Bid:______________________________________________________________________

Signor's Name and Title (print or type):_____________________________________________________________________________

E-mail Address:____________________________________________________________________________

Date:____________________Telephone:___________________________Fax:_________________________ mailto:melaniew@wacotx.gov file://NETAPP/HOMES/JodyC/0%20Purchasing/Utilities/2014/RFB%202014-012%20Generator%20Rebuild/www.waco-texas.com

Questions – RFB 2025-061 Riverside Actuators

1. In each line-item case, please confirm:

a. Process Media Potable Water

b. Max Pressure

15-20 PSI

c. Max Temperature

110 DEG F (AMBIENT)

90 DEG F (LIQUID)

d. Valve Make & Model (if any)

a. Actuator #1 = Effluent Valve = 14” PRATT B-fly valve

b. Actuator #2 = Backwash Valve = 24” American B-fly valve

c. Actuator #3 = Filter to Waste Valve = 10” B-fly valve

d. Actuator #4 = Air Scout Valve = 10” lug style industrial b-fly valve

2. Please confirm service demand:

a. ON/OFF?

b. Modulating?

Actuator #1 = Effluent Valve – Modulating Actuator #2 = Backwash Valve – Modulating Acutator #3 = Filter to Waste Valve – Open/Close Actuator #4 = Air Scour Valve – Open/Close

3. Please confirm Power Available (24VDC, 115VAC, 220VAC, 480VAC, etc.

a. 115V

4. Please confirm feedback requirement (Continuous 4-20ma, Limit Switches, both)

a. Current feedback is through the 120v controls. We do not have 4-20 mA ran to each individual actuator

5. To ensure full compatibility between the proposed electric actuators and the existing butterfly valves at the Riverside Water Treatment Plant, we respectfully request the following technical information:

1. Manufacturer and model numbers of the existing valves

2. Break torque values for each valve size (10", 14", and 24")

3. Stem dimensions and flange patterns

4. Mounting interface details (e.g., ISO standard, bolt circle, stem type)

5. Any available datasheets or drawings for the installed valves

This information will allow us to confirm actuator sizing, mounting compatibility, and avoid any field installation issues. Thank you in advance for your assistance. (See attached information and images.)

6. When will the purchase order be issued. The MFG will need to know this when offering special lead time. We do not have a specific time frame. This purchase would require council approval.

City of Waco

Riverside Actuator RFB

This packet is going to provide all information that is available for the Riverside Actuator Replacement Project. Brands, sizes, model numbers, and any other information is what can be taken from the valves themselves. I have also attached all measurements of shaft dimensions and bolt spacing/patterns that are available as well.

1. Efffluent Valve

a. Brand = Pratt

b. Size = 14”

c. Class = 150

d. Serial #’s:

i. 1312995-1-3-HP

ii. 1312995-1-1-HP

iii. 955645-2-4-HP

iv. 955645-2

v. 1312995-1-2-HP

Filter 1&2 Effluent Valve Position

Filters 3-10 Effluent Valve Position

Effluent Valve Stem Size

Effluent Valve Bolt Spacing on one side.

Effluent Valve Bolt Spacing #2

Effluent Valve connection to Actuator

2. Backwash Valve

a. Brand = Val-Matic American BFV

b. Size = 24”

c. Model = 2024

d. Serial # = M??8640

Backwash Valve Tag

Backwash Valve clearance from railing.

Backwash Stem Sizing

Backwash Valve Bolt Pattern

Backwash Valve close-up of mounting pattern

3. Filter to Waste Valve

a. Brand = unknown

b. Size = 10”

c. We have 1 butterfly valve that we have replace and there is a picture to go along with it. The other 9 will be labels as such.

Filter to Waste Valve Stem Sizing

Filter to Waste Valve Bolt Pattern and Spacing

Single Filter to Waste Valve separate from other 9

4. Air Scour Valve

a. Brand = unknown lug style valve

b. Size = 10”

Air Scour Valve Stem Sizing

Air Scour Valve Bolt Patterns

Air Scour Valve Bolt Pattern #2

Air Scour Valve Bolt Spacing

Air Scour Valve Bolt Spacing #2

Air Scour Valve Bolt Spacing #3