# Metrex Valves \| HVAC Water Regulating Valves: Speed, Flexibility, Quality \& Value

> Find out whether Metrex water regulating valves are compatible with ammonia \(NH3\) refrigerant systems before you specify\.

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## Pages
- [Terms \& Condition](https://metrexvalve.com/terms-condition/)
- [Privacy Policy](https://metrexvalve.com/privacy-policy/)
- [How to Size a Valve](https://metrexvalve.com/how-to-size-a-valve/)
- [How To Select A Metrex Valve](https://metrexvalve.com/how-to-select-a-metrex-valve/)
- [How Do Metrex Valves Work](https://metrexvalve.com/how-do-metrex-valves-work/)

## Posts
- [Every Metrex Valve We've Ever Made Is Now Fully Supported Online](https://metrexvalve.com/commercial-hvac-valve-rebuild-kits-metrex/)

## Products
- [2\-WAY NPT ENDS](https://metrexvalve.com/shop-product/2-way-npt-ends-3/)
- [2\-WAY NPT ENDS](https://metrexvalve.com/shop-product/2-way-npt-ends/)
- [Flange Ends \- 2\-Way](https://metrexvalve.com/shop-product/flange-ends-2-way/)
- [K\-WCCWHR\-100](https://metrexvalve.com/shop-product/k-wccwhr-100/): \<strong\>Size Thru:\</strong\> 3/8" \- 1" NPT
\<strong\>SERVICE PRESSURE RATING:\</strong\> 350 PSI
\<strong\>MAX REFRIGERANT PRESSURE:\</strong\> 460 PSI
\<strong\>Cv:\</strong\> 2\.2 \- 6\.0
- [K\-WCCWHR\-75](https://metrexvalve.com/shop-product/k-wccwhr-75/): \<strong\>Size Thru:\</strong\> 3/8" \- 1" NPT
\<strong\>SERVICE PRESSURE RATING:\</strong\> 350 PSI
\<strong\>MAX REFRIGERANT PRESSURE:\</strong\> 460 PSI
\<strong\>Cv:\</strong\> 2\.2 \- 6\.0

## Applications
- [Engineered Solutions](https://metrexvalve.com/applications/engineered-valve-solutions/)
- [Commercial Marine](https://metrexvalve.com/applications/commercial-marine-hvac-valves/)
- [Small Refrigeration](https://metrexvalve.com/applications/refrigeration-water-regulating-valve/)
- [Commercial \& Industrial Building HVAC](https://metrexvalve.com/applications/commercial-industrial-building-hvac/)
- [High Pressure Regulating Valves for HVAC](https://metrexvalve.com/applications/high-pressure-regulating-valves-for-hvac/)

## Products
- [3\-Way Union Ends \(NPT\)](https://metrexvalve.com/product/3-way-union-ends-npt-2/)
- [2\-Way NPT Ends](https://metrexvalve.com/product/2-way-npt-ends-7/)
- [2\-WAY NPT ENDS](https://metrexvalve.com/product/2-way-npt-ends-8/)
- [2\-WAY ANSI FLANGE](https://metrexvalve.com/product/2-way-ansi-flange-2/)
- [2\-Way NPT Ends](https://metrexvalve.com/product/2-way-npt-ends-2/)

## FAQ
- [Why should I do business with Metrex?](https://metrexvalve.com/faq/why-should-i-do-business-with-metrex/)
- [When I replace bellows do I need gaskets?](https://metrexvalve.com/faq/when-i-replace-bellows-do-i-need-gaskets/)
- [What are Cv values, and how do they influence valve selection?](https://metrexvalve.com/faq/what-are-cv-values-and-how-do-they-influence-valve-selection/)
- [How long has Metrex been in business?](https://metrexvalve.com/faq/how-long-has-metrex-been-in-business/)
- [How do I size a valve?](https://metrexvalve.com/faq/how-do-i-size-a-valve/)

## Categories
- [General](https://metrexvalve.com/category/general/)
- [High Pressure Refrigerants](https://metrexvalve.com/category/high-pressure-refrigerants/)
- [Industrial HVAC](https://metrexvalve.com/category/industrial-hvac/)
- [Marine Valves](https://metrexvalve.com/category/marine-valves/)

## Product categories
- [Part Kit](https://metrexvalve.com/product-category/part-kit/)
- [Standard Water Pressure](https://metrexvalve.com/product-category/standard-water-pressure/)
- [High Water Pressure](https://metrexvalve.com/product-category/high-water-pressure/)
- [Standard Refrigerant](https://metrexvalve.com/product-category/standard-refrigerant/)
- [High Refrigerant](https://metrexvalve.com/product-category/high-refrigerant/)

## Products Categories
- [865P](https://metrexvalve.com/products/865p/)
- [Standard Service](https://metrexvalve.com/products/standard-service/)
- [93P](https://metrexvalve.com/products/93p/)
- [800P](https://metrexvalve.com/products/800p/)
- [900P](https://metrexvalve.com/products/900p/)

## Categories
- [General](https://metrexvalve.com/faq-category/general/)
- [Maintenance \& Support](https://metrexvalve.com/faq-category/maintenance-support/)
- [Company Information](https://metrexvalve.com/faq-category/company-information/)
- [Support \& Technical Assistance](https://metrexvalve.com/faq-category/support-technical-assistance/)
- [Technical Guidance](https://metrexvalve.com/faq-category/technical-guidance/)

## Optional
- [Sitemap index](https://metrexvalve.com/sitemap_index.xml)