Water Draw Off Valves
OCECO V-143 and V-144 Water Draw Off Valves Overview
ZIRCO is proud to distribute OCECO V-143 and V-144 Water Draw Off Valves as the official representative for Western Canada. These double poppet valves are the most widely specified valves of their type in the industry, engineered for reliable water removal from storage tanks in Alberta's oil & gas operations.
The V-143 and V-144 valves are packless and feature high flow rates even at low pressure. Close attention to design and manufacture of each component has resulted in the highest quality product available for Western Canada's harsh climate.
Available in 2, 3, and 4 inch sizes with bronze or stainless steel trim options. The unique double valve design ensures non-freezing operation under all normal conditions, making these valves ideal for year-round use in Canadian oilfield applications.
Why Choose OCECO Water Draw Off Valves?
Non-Freezing Design
The inner valve seats first, permitting the chamber between inner and outer valves to drain before outer valve closure. Insulated by air chamber and surrounded by tank products for reliable operation in freezing conditions.
High Flow Rates
Packless design provides exceptional flow rates even at low pressure. Flow capacity ranges from 10 GPM at 1 foot head to 1,190 GPM at 100 feet head for 4-inch valves.
Double Poppet Design
Inner and outer valves operate on the same stem for precise control. Inner valve seats first, allowing chamber drainage before outer valve closes, ensuring complete water removal.
Quality Construction
Cast steel body with stainless steel stems. Bronze or stainless steel seat rings and valves. Teflon inserts for reliable sealing and long service life in corrosive environments.
Multiple Installation Options
V-143 valves are pipe threaded for tank installation. V-144 valves feature identical construction with flange mounting. Eccentric adapters available for pipe connection to sump.
Industry Standard
The most widely specified water draw off valves in the industry. Proven performance in thousands of installations across Western Canada's oil & gas sector.
Technical Specifications
Product Specifications
| Specification | Details |
|---|---|
| Available Sizes | 2 inches, 3 inches, and 4 inches |
| Body Material | Cast steel |
| Stem Material | Stainless steel |
| Seat Ring Options | Bronze or stainless steel |
| Valve Options | Bronze or stainless steel |
| Insert Material | Teflon |
| V-143 Connection | Pipe threaded for tank installation |
| V-144 Connection | Flange mounting (identical construction to V-143) |
| Optional Accessory | Eccentric adapter for pipe connection to sump |
Model Variants
V-143 Series
Pipe threaded valves designed for direct installation in storage tanks. Available in 2, 3, and 4 inch sizes with bronze or stainless steel trim.
- Pipe threaded connection
- Bronze or stainless steel trim
- Cast steel body
- Teflon inserts
V-144 Series
Flange mounted valves with identical construction to V-143. Available in 2, 3, and 4 inch sizes with bronze or stainless steel trim.
- Flange mounting connection
- Bronze or stainless steel trim
- Cast steel body
- Teflon inserts
Typical Applications
- Storage tanks and vessels in oil & gas industry throughout Western Canada
- Water draw-off from crude oil storage tanks
- Water separator systems in oilfield processing facilities
- Condensate removal from product storage
- Pipeline sump drainage applications
- Petrochemical storage facilities
- Refinery storage tank operations
- Fuel storage depots
How the Non-Freezing Design Works
The OCECO Water Draw Off Valves feature a unique double poppet design that ensures non-freezing operation under all normal conditions. Here's how it works:
- Inner Valve Seating: The inner valve (bronze or stainless steel trim) seats first, located well inside the tank where it's surrounded by tank products.
- Chamber Drainage: The chamber between the inner and outer valve drains before the outer valve closes, ensuring complete water removal.
- Thermal Insulation: The inner valve is insulated by the air chamber between the inner and outer valve, preventing freezing in cold weather conditions.
- Outer Valve Closure: The outer valve closes only after the chamber has drained, creating a complete seal.
This design makes OCECO valves ideal for year-round operation in Western Canada's harsh climate, where temperatures regularly drop well below freezing.
Dimension Table
Dimensions for OCECO V-143 and V-144 Water Draw Off Valves in inches. All dimensions in inches unless otherwise noted.
| Dimension | Valve Size (inches) | ||
|---|---|---|---|
| 2″ | 3″ | 4″ | |
| A | 3.000 | 4.000 | 6.000 |
| B | 2.125 | 2.750 | 3.625 |
| C | 3.625 | 4.875 | 6.375 |
| D | 20.000 | 24.500 | 26.250 |
| E | 16.000 | 18.938 | 19.750 |
| F | 5.000 | 5.375 | 5.625 |
| G | 1.5000 NPT | 2.500 NPT | 3.500 NPT |
| H | 1.500 NPT | 2.000 NPT | 3.000 NPT |
| J | 1.500 NPT | 2.000 NPT | 3.000 NPT |
| K | 4 Holes | 8 Holes | 8 Holes |
| L | 0.500 | 0.688 | 0.688 |
| M | 3.000 | 4.438 | 5.688 |
| N | 11.375 | 13.313 | 14.375 |
| P | 7.500 | 9.000 | 11.000 |
| Q | 6.000 | 7.500 | 9.500 |
| R | 7.875 | 9.500 | 10.125 |
| S | 0.750 Dia. | 0.750 Dia. | 0.875 Dia. |
Note: All dimensions are nominal and subject to change. For critical applications, verify dimensions with ZIRCO's technical team.
OCECO Model V-143 and V-144 Flow Chart
Flow of water in Gallons Per Minute (GPM) at various head pressures for each valve size. This data helps you select the appropriate valve size for your specific application.
| Head Pressure (Feet of Water) |
2″ Valve (GPM) |
3″ Valve (GPM) |
4″ Valve (GPM) |
|---|---|---|---|
| 1 | 10 | 50 | 140 |
| 2 | 16 | 70 | 195 |
| 3 | 21 | 83 | 240 |
| 4 | 30 | 98 | 270 |
| 5 | 34 | 110 | 300 |
| 6 | 37 | 120 | 320 |
| 7 | 42 | 130 | 350 |
| 8 | 45 | 140 | 380 |
| 9 | 48 | 145 | 395 |
| 10 | 51 | 155 | 425 |
| 20 | 75 | 210 | 580 |
| 30 | 93 | 270 | 700 |
| 40 | 110 | 300 | 800 |
| 50 | 125 | 330 | 890 |
| 60 | 140 | 360 | 970 |
| 70 | 150 | 400 | 1,040 |
| 80 | 160 | 420 | 1,100 |
| 90 | 170 | 440 | 1,150 |
| 100 | 180 | 460 | 1,190 |
Flow rates in Gallons Per Minute (GPM) at various head pressures in feet of water. Contact ZIRCO for assistance with valve sizing for your specific application.
Valve Sizing Guidance
Selecting the correct valve size is critical for optimal performance. Consider the following factors when sizing your water draw off valve:
- Required Flow Rate: Determine the maximum water volume to be removed per minute
- Available Head Pressure: Calculate the water height above the valve installation point
- Tank Size: Larger tanks may require larger valves for efficient water removal
- Operating Conditions: Consider temperature variations and product characteristics
- Installation Location: Ensure adequate space for valve operation and maintenance
For complex applications or if you need assistance selecting the correct valve size, contact ZIRCO's technical team. We have extensive experience sizing water draw off valves for Western Canada's oil & gas applications.
Ready to Solve Your Water Draw Off Challenges?
Contact our team today to discuss how OCECO V-143 and V-144 Water Draw Off Valves can provide reliable, non-freezing water removal for your storage tanks. ZIRCO provides expert support for Western Canada's industrial applications from Calgary, Alberta.