Iococee 3/4 Inch Tankless Water Heater Isolator Valve Kit Review
A 3 piece Iococee brass isolator valve kit for tankless water heaters, with hot and cold 600 WOG isolation valves and a 150 psi pressure relief valve sized for 3/4 inch IPS service lines.
| Brand | Iococee |
|---|---|
| Connection size | 3/4 inch IPS |
| Material | Brass |
| Isolation valve rating | 600 WOG |
| Relief valve rating | 150 psi / 200K BTU |
| Certification | Lead free, CSA on relief valve |
| Best for | Installing or servicing a 3/4 inch tankless gas water heater from brands like Rheem, Rinnai, EcoSmart, Navien, Noritz, Takagi or Bosch |
Product Overview
Iococee positions this as a dedicated service valve kit for tankless gas water heaters rather than a generic plumbing valve set.
The 3/4 inch IPS sizing and brand compatibility list are built around common domestic and commercial tankless heater installs.
Score Breakdown
This verdict is based on the manufacturer's stated specifications, the current Amazon listing and its product images, the confirmed materials and design, real buyer ratings, and our research into the product category. Scores are consistent editorial judgments, not laboratory measurements, and we did not receive a paid sample.
Key Features
600 WOG, color coded handles.
150 psi, 200K BTU rated.
Brass safety cap included.
Meets drinking water standards.
Factory leak tested.
Design and Build Quality
Valve bodies are one-piece forged brass, gravity forged, which Iococee states helps prevent leaking or dripping, with each isolation valve group leak tested before it leaves the factory.
A full port ball valve design is used for better flow rate, and an integrated drain valve includes a brass safety cap for easier maintenance access.
Performance in Everyday Use
The kit's hot and cold isolation valves are rated 600 WOG, and the pressure relief valve is rated 150 psi and 200K BTU, with color coded handles making it easy to identify hot from cold at a glance.
Iococee states the components are certified lead free and meet federal and state drinking water standards, with CSA certification on the pressure relief valve, and backs the kit with 365 days of satisfaction service.
How It Performs: The Evidence
| Decision factor | What we found | Evidence and measurement | Score | Why it matters |
|---|---|---|---|---|
| Connection size | 3/4 inch IPS | Title states 3/4 Inch IPS Isolator Tankless Water Heater Service Isolation Valve Kit | 8.2 | Confirms the stated connection size |
| Isolation valve rating | 600 WOG | Listing states hot and cold isolation valves(600 WOG) | 8.3 | Confirms the stated isolation valve pressure rating |
| Relief valve rating | 150 psi / 200K BTU | Listing states pressure relief valve (150 psi/200K BTU) | 8.3 | Confirms the stated relief valve rating |
| Certification | Lead free, CSA certified relief valve | Listing states components are certified lead free and CSA certification on the pressure relief valve | 8.4 | Confirms the stated certifications |
| Brand compatibility | Rheem, Rinnai, EcoSmart, Navien, Noritz, Takagi, Bosch | Listing states suitable for brands such as Rheem, Rinai, Ecosmart, Navien, Noritz, Takagi and Bosch | 8.4 | Confirms the stated brand compatibility list |
| Service policy | 365-day satisfaction service | Listing states we offer a 365-day satisfaction service | 8.0 | Confirms the stated service policy length |
Who Should Buy It
- Installing a new tankless gas water heater
- Servicing Rheem, Rinnai, EcoSmart, Navien, Noritz, Takagi or Bosch units
- Plumbers needing a lead free certified valve kit
- Replacing worn isolation valves on a 3/4 inch line
- Anyone with a tankless heater using a connection size other than 3/4 inch IPS
- Fixed 3/4 inch IPS sizing will not fit other connection sizes without adapters
- Pressure relief valve is rated for 200K BTU, which may not match every heater's output
- Installation requires plumbing knowledge rather than being a simple drop-in part
- Kit is specific to tankless gas heaters, not tank-style water heaters
Full Specifications
How It Compares
| Feature | Iococee | Typical option | Higher-tier option |
|---|---|---|---|
| Valve body | One-piece forged brass | Multi-piece cast body | Comparable forged brass valve kit |
| Isolation valve rating | 600 WOG | Lower pressure rated valve | Comparable 600 WOG valve kit |
| Flow design | Full port ball valve | Standard restricted port valve | Comparable full port valve kit |
| Certification | Lead free, CSA on relief valve | No stated certification | Comparable certified valve kit |
| Brand compatibility | Rheem, Rinnai, EcoSmart, Navien and more | Limited brand compatibility | Comparable multi-brand valve kit |
Alternatives Worth a Look



A 3 piece, 3/4 inch brass isolator valve kit for tankless gas water heaters, with 600 WOG hot and cold valves, a 150 psi pressure relief valve, lead free certification and a 365 day satisfaction service. It suits servicing tankless heaters from major brands well, with the main limit being its fixed 3/4 inch IPS sizing.
Frequently Asked Questions
What size connection does this kit fit?
3/4 inch IPS.
What pressure is the isolation valve rated for?
600 WOG.
What pressure is the relief valve rated for?
150 psi and 200K BTU.
What brands is this kit compatible with?
Rheem, Rinnai, EcoSmart, Navien, Noritz, Takagi and Bosch, per the listing.
Is the kit lead free?
Yes, the components are certified lead free.
How many valves are in the kit?
3, a hot isolation valve, a cold isolation valve and a pressure relief valve.
This review is based on Iococee's own stated materials, pressure ratings and certifications as listed. It is editorial analysis of the stated specifications, not independent pressure or leak testing after installation.