Trident Marine Series 165 Reinforced PVC Cold Water Hose – 1/2 in. x 50 ft
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Trident Marine Series 165 Reinforced PVC Cold Water Hose – 1/2 in. x 50 ft
| Part Number | 165-0126 |
| Brand | Trident Marine |
| Series | 165 Blue Reinforced PVC Cold Water Hose |
| SKU | TRI-165-0126 |
| UPC | 704917023946 |
| Inside Diameter | 1/2 in. / 12.7 mm |
| Outside Diameter | ~0.777 in. / 19.6 mm |
| Length | 50 ft / 15.24 m |
| Construction | 3-ply polyester reinforced PVC |
| Color | Translucent blue (cold-water identification) |
| Safe Working Pressure | 250 PSI |
| Temperature Range | −18°F to 149°F / −28°C to 65°C |
| Minimum Bend Radius | ~0.98 in. / 25 mm |
| System | Marine pressurized cold-water plumbing |
What This Hose Is For
Trident Series 165 is a reinforced PVC cold-water hose built for pressurized marine potable-water and general cold-water plumbing installations. Its FDA-grade tube is non-toxic, odorless, and tasteless — safe for onboard drinking water systems. The translucent blue color-coding makes it easy to identify cold-water runs at a glance, and the 3-ply polyester reinforcement keeps it stable under pressure while remaining flexible enough for routing in confined spaces.
This hose is not rated for below-waterline intake use. Series 165 is designed for cold-water feed, drain, and vent applications above the waterline only.
Compatible Applications
- Pressurized cold potable-water lines
- Freshwater feed lines from tanks to fixtures
- Above-waterline drain lines
- Vent lines
- General above-waterline cold-water plumbing where reinforced PVC is specified
Fitment Notice
This is a 1/2-inch ID hose. Confirm that hose barbs, fittings, and plumbing connections are sized for 1/2-inch hose before ordering. Do not use this hose for hot water, fuel, sanitation discharge, or below-waterline raw-water intake service — those applications require hose specifically rated for those conditions.
When to Replace
- Cracking, hardening, or brittleness in the hose wall
- Bulging, soft spots, or delamination
- Abrasion through the outer wall
- Kinking that restricts flow
- Persistent leakage at fittings or clamp bands
- Discoloration or contamination affecting potable-water suitability
Installation Notes
- Cut the hose squarely for a proper barb fit
- Install over correctly sized 1/2-inch hose-barb fittings
- Use marine-grade hose clamps appropriate to the system pressure
- Maintain a minimum bend radius of approximately 0.98 in. / 25 mm
- Route away from sharp edges, heat sources, and engine components
- Do not use below the waterline or for hot-water service
Service Interval
Inspect annually or at each haul-out. For potable-water systems, also inspect if water taste or odor changes. Replace at the first sign of cracking, hardening, bulging, or leakage — do not wait for failure on a pressurized line.
Technical FAQ
Is this hose safe for drinking water?
Yes. The Series 165 tube is FDA-grade — non-toxic, odorless, and tasteless — making it suitable for pressurized potable-water lines aboard a vessel.
Can I use this hose below the waterline?
No. Series 165 is not recommended for below-waterline service. Below-waterline intake applications require hose specifically rated and constructed for that use (such as USCG Type A or wet exhaust hose for the applicable system).
Can I use Series 165 for hot water lines?
No. The temperature rating tops out at 149°F / 65°C. For hot-water lines, use hose specifically rated for continuous hot-water service at your system’s operating temperature.
Why is the hose blue?
The translucent blue color is a marine-standard cold-water identifier. It lets you distinguish cold-water runs from hot-water (typically red or striped) and other system hoses when tracing lines in a bilge or cabinet.
What fittings does this hose work with?
Standard 1/2-inch hose-barb fittings in bronze, stainless, or plastic rated for potable-water service. Confirm barb sizing matches the 1/2-inch ID before installing.
Parts Desk Insights
Series 165 is the right call for onboard cold freshwater plumbing where you want a potable-water-safe, colour-coded hose that holds up under normal water-system pressure. The blue colour-coding is genuinely useful in a busy bilge or cabinet — it makes tracing cold-water runs quick without having to follow every line back to the source. The thing to watch: customers occasionally try to use this for below-waterline intake or hot-water lines because it looks like general-purpose hose. It is not rated for either. If the installation is below the waterline or involves hot water, they need a different product entirely.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.