This surplus Free Water Knockout 6×16 (FWKO) is a heavy-duty surface production vessel engineered to effectively separate free water from produced fluids in oil and gas operations. Built by Tri-State Supply Corp in 2019, this non-code vessel is an excellent fit for upstream and midstream installations where ASME code certification is not required.
Equipment Details
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Manufacturer: Tri-State Supply Corp
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Condition: New Surplus
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Equipment Type: Free Water Knockout (FWKO)
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Vessel Classification: Non-Code
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Size: 6 ft diameter × 16 ft length
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Maximum Allowable Working Pressure: 250 psi @ 200°F
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Minimum Design Metal Temperature: -20°F
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Year of Manufacture: 2019
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Serial Number: 016160082
Designed for demanding field environments, this Free Water Knockout 6×16 delivers dependable gravity separation to remove free water ahead of downstream processing equipment.
Typical Applications
Free Water Knockouts play a vital role in oil and gas production and gathering systems by removing bulk water from multi-phase streams at an early stage. This process helps protect downstream separators, treaters, compressors, and pipelines by reducing corrosion, erosion, and operational inefficiencies. Well suited for wellhead locations, gathering lines, and midstream facilities, this FWKO offers durable, long-term performance in a wide range of operating conditions.
Why You Should Care
FWKOs
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Reduce corrosion and erosion
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Minimize downstream upsets
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Improve separator and treater efficiency
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Extend equipment life
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Lower operating and maintenance costs
Non Code Vessels – Why isn’t this ASME stamped?
There are a few advantages for non code FWKOs – namely price and time to manufacture. Factors to consider include:
Inspection, Condition, Availability
This Knockout is offered as new surplus and has not been placed into service. It has been stored to maintain its condition and is available for inspection upon request. Documentation and additional details can be provided to support evaluation and project planning.
Because this FWKO is in stock, it is available for immediate sale and delivery.
Helpful Links
Shipping Countries:
United States (US)
Ready to ship in 1-3 business days
from United States (US)
Shipping Policy
To ensure your order is shipped safely and appropriately, we determine the shipping method based on weight, size, and handling requirements.
Parcel Shipments
Smaller items that meet standard carrier limits are shipped via common parcel carriers such as UPS, FedEx, or USPS. This is calculated for you automatically at checkout.
LTL Freight (Less-Than-Truckload)
Orders that:
Weigh over 150 lbs, or
Exceed parcel carrier size or dimensional limits
will ship via LTL freight.
LTL shipments are handled by third-party freight carriers and typically involve palletized delivery. Transit times and delivery scheduling vary depending on carrier availability, destination, and freight class.
Please note:
LTL deliveries often require a delivery appointment.
Liftgate service, limited access, or residential delivery may affect transit time and cost.
It is best to reach out to us before your purchase on items that exceed 150lbs or that are larger than 96 inches in any one direction in order to ensure that you get an accurate estimate on cost.
Full Truckload (FTL) / Specialized Freight
Large or specialized items—such as tanks, vessels, oversized equipment, or shipments requiring hazmat handling or oversized permits—are managed directly by Tri-State Supply.
These shipments may require:
Full truckload (FTL) transport
Oversized or overweight permits
Specialized carriers or equipment
Additional coordination prior to shipment
Because of this, processing and delivery timelines for full truckload or specialized freight are determined on a case-by-case basis. Our team will coordinate directly with you to confirm logistics before shipment. You will need to reach out to us for a quote. You may also arrange freight for your purchases. Loading fees, appointments, and more arrangements will still need to be agreed upon before something leaves our property.
Order Processing & Timing
Most in-stock orders are processed within 1–3 business days. Freight shipments—especially LTL and full truckload—may require additional time to schedule pickup and delivery.
Estimated delivery dates are provided as guidance and are subject to carrier and logistical factors beyond our direct control.
Questions Before You Order
If you are purchasing:
Large or heavy items
Freight-sensitive equipment
Job-site or residential deliveries
we strongly recommend contacting us before placing your order so we can help confirm the best shipping method and set clear expectations.
Tri-State Supply
Customer Support Hours
Monday–Friday, 8:00 AM – 5:00 PM CST
Please allow up to 24 business hours for a response.
Refund Policy
Tri-State Supply Corp
Return & Refund Policy
We want you to feel confident in every purchase from our store. As part of BranaBee, we follow the BranaBee Refund Policy (https://branabee.com/refund_returns/) and have added a few specifics to make returns as simple as possible.
1. Return Eligibility
We accept returns on new, unused items within 30 days of delivery, as long as the item is in a condition that allows it to be resold.
Items marked “As-Is” or “As-Is Where-Is” cannot be returned.
To qualify for a return, items must:
Be unused
Be in original or equivalent packaging
Be free from damage, installation marks, or modifications
Used or installed items are not eligible for return or refund.
2. How to Request a Return
To start a return:
Submit a return or refund request for your order.
If eligible, we will provide a return shipping label via email.
Once we receive and inspect the item, your refund will be issued to your original payment method.
3. Large, Heavy, or Freight-Shipped Items
Returns for large or freight items require special handling:
Our team will contact you to coordinate the return.
Return eligibility and logistics are handled case by case.
Timelines and costs may differ from standard parcel returns due to shipping requirements.
4. Non-Refundable Items
Used or installed items
Items returned after 30 days
Items damaged due to improper packaging or handling
5. Questions Before You Buy
For large or freight-shipped items, we recommend contacting us before ordering. This helps confirm specifications and return expectations.
For any other questions, reach out during business hours:
Monday–Friday, 8:00 AM – 5:00 PM CST
Please allow up to 24 business hours for a response.
✅ Bottom line: Our goal is to make your shopping experience smooth and worry-free. If you ever have a concern about a return, we’re here to help.
