--- title: Pressure Independent Valves in Greenhouses description: Greenhouses face special challenges when it comes to maintaining narrow specific temperature ranges. Pressure independent valves can help a hydronic HVAC system maintain these temperatures at maximum efficiency. image: https://blogs.heattransfersales.com/hubfs/canstockphoto1265657.jpg --- [![HTS_Logo_RGB_and_White](https://blogs.heattransfersales.com/hs-fs/hubfs/HTS_Logo_RGB_and_White.png?width=270&height=81&name=HTS_Logo_RGB_and_White.png "HTS_Logo_RGB_and_White")](http://www.heattransfersales.com) - [Home](https://heattransfersales.com/) - [Products](https://heattransfersales.com/products) - [Manufacturers Represented](https://heattransfersales.com/products) - [Packaged Systems](https://heattransfersales.com/products) - [Customer Service](https://heattransfersales.com/customer-service) - [Parts](https://heattransfersales.com/parts) - [Pump Repair](https://heattransfersales.com/pump-repair) - [Service](https://heattransfersales.com/service) - [Pump'nFlo](https://heattransfersales.com/pump-nflo) - [Resources](https://heattransfersales.com/resources) - [Training](https://heattransfersales.com/training) - [Sustainable System Concepts](https://heattransfersales.com/sustainable-system-concepts) - [Airside HVAC](https://heattransfersales.com/hvac-equipment) - [Plumbing Equipment](https://heattransfersales.com/plumbing-equipment) - [Building Automation](https://heattransfersales.com/building-automation) - [Blog](https://blogs.heattransfersales.com/blog) - [Careers](https://heattransfersales.com/careers) - [About Us](https://heattransfersales.com/about-us) - [History](https://heattransfersales.com/history) - [Privacy Policy](https://324b4bc7-5729-4ace-b8c0-bc77b425b76e.filesusr.com/ugd/ff46b9_f6100e8b535d465f9fb060f60f8049cc.pdf) - [Terms of Use](https://324b4bc7-5729-4ace-b8c0-bc77b425b76e.filesusr.com/ugd/ff46b9_8a108a4c73734c8ca00866bdecf7cb60.pdf) - [Contact](https://heattransfersales.com/contact) ### Topics - Select a Topic ### Stay up to date SUBSCRIBE TO OUR BLOG ### Stay up to date [General Knowledge](https://blogs.heattransfersales.com/blog/topic/general-knowledge) [Manufacturer Information](https://blogs.heattransfersales.com/blog/topic/manufacturer-information) [Building Owner Tips](https://blogs.heattransfersales.com/blog/topic/building-owner-tips) [Design Engineer Tips](https://blogs.heattransfersales.com/blog/topic/design-engineer-tips) [Valves](https://blogs.heattransfersales.com/blog/topic/valves) # Pressure Independent Valves in Greenhouses ![Picture of Kelly Patterson](https://blogs.heattransfersales.com/hubfs/Blog_images/10801587_10152577444568382_8583161712827376882_n.jpg) By [Kelly Patterson](https://blogs.heattransfersales.com/blog/author/kelly-patterson) on February, 6 2019 [mailto:?body=https://blogs.heattransfersales.com/blog/pressure-independent-valves-in-greenhouses](mailto:?body=https://blogs.heattransfersales.com/blog/pressure-independent-valves-in-greenhouses) ![canstockphoto1265657](https://blogs.heattransfersales.com/hubfs/canstockphoto1265657.jpg) ![pressure independent valves for greenhouses](https://blogs.heattransfersales.com/hs-fs/hubfs/canstockphoto1265657.jpg?width=800&name=canstockphoto1265657.jpg)Flower and vegetable greenhouses are not uncommon in NC and SC.  While growers in western climates are starting to focus on cannabis, here in the southeastern part of the country, we grow potted plants.  Still, no matter if you're growing cannabis or canna lillies, greenhouses all face similar critical issues.  Our manufacturing partners at [Griswold Controls](http://griswoldcontrols.com/) have developed some application tips for greenhouses that design engineers and growers may find useful.  Read their application tips sheet below to learn more about how [hydronic HVAC systems](https://blogs.heattransfersales.com/blog/hydronic-hvac-system) can maintain temperature within a narrow range in a cost efficient way. ![Screenshot 2019-02-05 16.04.42](https://blogs.heattransfersales.com/hs-fs/hubfs/Screenshot%202019-02-05%2016.04.42.png?width=698&name=Screenshot%202019-02-05%2016.04.42.png) Blog image courtesy [(c) Can Stock Photo / RbbrDckyBK](https://www.canstockphoto.com)       ###### About The Author [More from this author](https://blogs.heattransfersales.com/blog/author/kelly-patterson) ![](https://blogs.heattransfersales.com/hs-fs/hubfs/Blog_images/10801587_10152577444568382_8583161712827376882_n.jpg?height=100&name=10801587_10152577444568382_8583161712827376882_n.jpg) ###### Kelly Patterson Kelly Patterson is an avid fan of marketing HVAC and plumbing equipment and does it on a daily basis for all the Hoffman family of companies. #### Recommended Articles [![4 Benefits of Switching to a Hydronic HVAC System](https://blogs.heattransfersales.com/hubfs/h4qhtnb3.png)](https://blogs.heattransfersales.com/blog/4-benefits-of-switching-to-a-hydronic-hvac-system) ###### [4 Benefits of Switching to a Hydronic HVAC System](https://blogs.heattransfersales.com/blog/4-benefits-of-switching-to-a-hydronic-hvac-system) - December 6, 2022 [![Troubleshooting Mechanical Room Noises](https://blogs.heattransfersales.com/hubfs/ergdfb.png)](https://blogs.heattransfersales.com/blog/troubleshooting-mechanical-room-noises) ###### [Troubleshooting Mechanical Room Noises](https://blogs.heattransfersales.com/blog/troubleshooting-mechanical-room-noises) - August 19, 2022 [![Removing Iron Oxide in Hydronic HVAC Systems](https://blogs.heattransfersales.com/hubfs/Screenshot%202019-02-06%2010.46.26.png)](https://blogs.heattransfersales.com/blog/how-to-combat-iron-oxide-in-hydronic-hvac-systems-0) ###### [Removing Iron Oxide in Hydronic HVAC Systems](https://blogs.heattransfersales.com/blog/how-to-combat-iron-oxide-in-hydronic-hvac-systems-0) - June 30, 2021 #### Recommended Articles #### Recommended Articles #### Recommended Articles #### Recommended Articles Search Article ### Popular Posts ### Stay up to date ### Recent Post ### Recent Posts [A Look at Why the Riello Array Has Won So Many Awards](https://blogs.heattransfersales.com/blog/a-look-at-why-the-riello-array-has-won-so-many-awards) - 6 February, 2019 [Replacing Outdated Boilers to Meet New DOE Standards](https://blogs.heattransfersales.com/blog/replacing-outdated-boilers-to-meet-new-doe-standards) - 6 February, 2019 [3 “NEED TO KNOWS” ABOUT DHW SYSTEMS](https://blogs.heattransfersales.com/blog/3-need-to-knows-about-dhw-systems) - 6 February, 2019 [4 Benefits of Switching to a Hydronic HVAC System](https://blogs.heattransfersales.com/blog/4-benefits-of-switching-to-a-hydronic-hvac-system) - 6 February, 2019 [Why Prefabricated Pumping Systems Ease System Design](https://blogs.heattransfersales.com/blog/why-prefabricated-pumping-systems-ease-system-design) - 6 February, 2019 ###### ABOUT THE COMPANY ![HTS_Symbol_RGB](https://blogs.heattransfersales.com/hubfs/HTS_Symbol_RGB.png) ### Heat Transfer Sales, LLC We are proponents of sustainable and efficient hydronic heating and cooling building solutions, which are at the heart of commercial green building. - - - - ### Topics - [Design Engineer Tips (109)](https://blogs.heattransfersales.com/blog/topic/design-engineer-tips) - [General Knowledge (95)](https://blogs.heattransfersales.com/blog/topic/general-knowledge) - [Building Owner Tips (70)](https://blogs.heattransfersales.com/blog/topic/building-owner-tips) - [Pumps (56)](https://blogs.heattransfersales.com/blog/topic/pumps) - [Manufacturer Information (46)](https://blogs.heattransfersales.com/blog/topic/manufacturer-information) - [Boilers and Water Heaters (40)](https://blogs.heattransfersales.com/blog/topic/boilers-and-water-heaters) - [Efficiency (22)](https://blogs.heattransfersales.com/blog/topic/efficiency) - [Training (22)](https://blogs.heattransfersales.com/blog/topic/training) - [Webinars (18)](https://blogs.heattransfersales.com/blog/topic/webinars) - [Customer Service (17)](https://blogs.heattransfersales.com/blog/topic/customer-service) - [Energy Savings (14)](https://blogs.heattransfersales.com/blog/topic/energy-savings) - [Air Curtains (13)](https://blogs.heattransfersales.com/blog/topic/air-curtains) - [HVAC (12)](https://blogs.heattransfersales.com/blog/topic/hvac) - [Metraflex (12)](https://blogs.heattransfersales.com/blog/topic/metraflex) - [infrared Heating (12)](https://blogs.heattransfersales.com/blog/topic/infrared-heating) - [Products (10)](https://blogs.heattransfersales.com/blog/topic/products) - [HVAC Design Tools (9)](https://blogs.heattransfersales.com/blog/topic/hvac-design-tools) - [PDH Credits (9)](https://blogs.heattransfersales.com/blog/topic/pdh-credits) - [Parts (9)](https://blogs.heattransfersales.com/blog/topic/parts) - [Hydronic (8)](https://blogs.heattransfersales.com/blog/topic/hydronic) - [Filtration (7)](https://blogs.heattransfersales.com/blog/topic/filtration) - [Boilers (6)](https://blogs.heattransfersales.com/blog/topic/boilers) - [Taco (6)](https://blogs.heattransfersales.com/blog/topic/taco) - [Piping (4)](https://blogs.heattransfersales.com/blog/topic/piping) - [Raypak (4)](https://blogs.heattransfersales.com/blog/topic/raypak) - [Schwank (4)](https://blogs.heattransfersales.com/blog/topic/schwank) - [Valves (4)](https://blogs.heattransfersales.com/blog/topic/valves) - [Variable Frequency Drives (4)](https://blogs.heattransfersales.com/blog/topic/variable-frequency-drives) - [Water (4)](https://blogs.heattransfersales.com/blog/topic/water) - [Water Purification (4)](https://blogs.heattransfersales.com/blog/topic/water-purification) - [Burners (3)](https://blogs.heattransfersales.com/blog/topic/burners) - [Commercial Boiler (3)](https://blogs.heattransfersales.com/blog/topic/commercial-boiler) - [Cooling Towers (3)](https://blogs.heattransfersales.com/blog/topic/cooling-towers) - [Green Building Design and Equipment (3)](https://blogs.heattransfersales.com/blog/topic/green-building-design-and-equipment) - [Pump'nFlo (3)](https://blogs.heattransfersales.com/blog/topic/pumpnflo) - [Riello (3)](https://blogs.heattransfersales.com/blog/topic/riello) - [About us (2)](https://blogs.heattransfersales.com/blog/topic/about-us) - [Expansion Joints (2)](https://blogs.heattransfersales.com/blog/topic/expansion-joints) - [Outdoor Dining (2)](https://blogs.heattransfersales.com/blog/topic/outdoor-dining) - [Pump Selection (2)](https://blogs.heattransfersales.com/blog/topic/pump-selection) - [Technician Tips (2)](https://blogs.heattransfersales.com/blog/topic/technician-tips) - [humidification (2)](https://blogs.heattransfersales.com/blog/topic/humidification) - [pure humidifier (2)](https://blogs.heattransfersales.com/blog/topic/pure-humidifier) - [AERCO (1)](https://blogs.heattransfersales.com/blog/topic/aerco) - [Air Release Valve (1)](https://blogs.heattransfersales.com/blog/topic/air-release-valve) - [Anchor Load Calculations (1)](https://blogs.heattransfersales.com/blog/topic/anchor-load-calculations) - [Chillers (1)](https://blogs.heattransfersales.com/blog/topic/chillers) - [Closed-Coupled Design (1)](https://blogs.heattransfersales.com/blog/topic/closed-coupled-design) - [Commercial HVAC (1)](https://blogs.heattransfersales.com/blog/topic/commercial-hvac) - [Commercial Range (1)](https://blogs.heattransfersales.com/blog/topic/commercial-range) - [Compensator (1)](https://blogs.heattransfersales.com/blog/topic/compensator) - [Cooling (1)](https://blogs.heattransfersales.com/blog/topic/cooling) - [Delegated Design (1)](https://blogs.heattransfersales.com/blog/topic/delegated-design) - [Digital Gas Heater (1)](https://blogs.heattransfersales.com/blog/topic/digital-gas-heater) - [Expansion Tanks (1)](https://blogs.heattransfersales.com/blog/topic/expansion-tanks) - [Externally Pressurized Joint (1)](https://blogs.heattransfersales.com/blog/topic/externally-pressurized-joint) - [Guide Spacing Requirements (1)](https://blogs.heattransfersales.com/blog/topic/guide-spacing-requirements) - [Heaters (1)](https://blogs.heattransfersales.com/blog/topic/heaters) - [Hospitals (1)](https://blogs.heattransfersales.com/blog/topic/hospitals) - [LEED (1)](https://blogs.heattransfersales.com/blog/topic/leed) - [LPD Strainer (1)](https://blogs.heattransfersales.com/blog/topic/lpd-strainer) - [Make-up Water (1)](https://blogs.heattransfersales.com/blog/topic/make-up-water) - [Metal Expansion Joints (1)](https://blogs.heattransfersales.com/blog/topic/metal-expansion-joints) - [MetraPak (1)](https://blogs.heattransfersales.com/blog/topic/metrapak) - [Metraloop (1)](https://blogs.heattransfersales.com/blog/topic/metraloop) - [New Product (1)](https://blogs.heattransfersales.com/blog/topic/new-product) - [PAX Series (1)](https://blogs.heattransfersales.com/blog/topic/pax-series) - [Pipe Penetration Seal (1)](https://blogs.heattransfersales.com/blog/topic/pipe-penetration-seal) - [Potable Water Systems (1)](https://blogs.heattransfersales.com/blog/topic/potable-water-systems) - [Project Files (1)](https://blogs.heattransfersales.com/blog/topic/project-files) - [Pump collector (1)](https://blogs.heattransfersales.com/blog/topic/pump-collector) - [Quiz (1)](https://blogs.heattransfersales.com/blog/topic/quiz) - [Refrigerant (1)](https://blogs.heattransfersales.com/blog/topic/refrigerant) - [Restaurant Patios (1)](https://blogs.heattransfersales.com/blog/topic/restaurant-patios) - [Riser Anchor Clamp (1)](https://blogs.heattransfersales.com/blog/topic/riser-anchor-clamp) - [SST Series (1)](https://blogs.heattransfersales.com/blog/topic/sst-series) - [Steam (1)](https://blogs.heattransfersales.com/blog/topic/steam) - [SuctionDiffuserFlex (1)](https://blogs.heattransfersales.com/blog/topic/suctiondiffuserflex) - [System Feed Units (1)](https://blogs.heattransfersales.com/blog/topic/system-feed-units) - [VRF (1)](https://blogs.heattransfersales.com/blog/topic/vrf) - [VaneFlex (1)](https://blogs.heattransfersales.com/blog/topic/vaneflex) - [Vertical Inline (1)](https://blogs.heattransfersales.com/blog/topic/vertical-inline) - [Y-Strainer (1)](https://blogs.heattransfersales.com/blog/topic/y-strainer) - [YANMAR (1)](https://blogs.heattransfersales.com/blog/topic/yanmar) - [seismic breakaway hanger (1)](https://blogs.heattransfersales.com/blog/topic/seismic-breakaway-hanger) - [superTube (1)](https://blogs.heattransfersales.com/blog/topic/supertube) see all [![New Call-to-action](https://no-cache.hubspot.com/cta/default/715354/d9a35e17-d3c8-44b5-91e0-47a3bcfea5f0.png)](https://cta-redirect.hubspot.com/cta/redirect/715354/d9a35e17-d3c8-44b5-91e0-47a3bcfea5f0) #### Submit a Comment ### Get latest articles directly in your inbox, stay up to date SUBSCRIBE TO OUR BLOG **Our Location** Headquarters 4101 Beechwood Drive, Greensboro, NC 27410 [Get Directions](https://www.google.com/maps/place/4101+Beechwood+Dr,+Greensboro,+NC+27410/@36.0544034,-79.9484879,17z/data=!3m1!4b1!4m5!3m4!1s0x8853051e63c99b6d:0x24b2c5a3927d7634!8m2!3d36.0544034!4d-79.9462992) **Contact Us** 336.294.3838 [info@heattransfersales.com](mailto:info@heattransfersales.com) [![Untitled design - 2020-11-19T112748.776](https://blogs.heattransfersales.com/hs-fs/hubfs/Untitled%20design%20-%202020-11-19T112748.776.png?width=24&name=Untitled%20design%20-%202020-11-19T112748.776.png)](https://www.linkedin.com/company/heat-transfer-sales-of-the-carolinas-inc) [![Untitled design - 2020-11-19T112815.271](https://blogs.heattransfersales.com/hs-fs/hubfs/Untitled%20design%20-%202020-11-19T112815.271.png?width=24&name=Untitled%20design%20-%202020-11-19T112815.271.png)](https://www.facebook.com/HeatTransferSales/) [![Untitled design - 2020-11-19T112835.473](https://blogs.heattransfersales.com/hs-fs/hubfs/Untitled%20design%20-%202020-11-19T112835.473.png?width=24&name=Untitled%20design%20-%202020-11-19T112835.473.png)](https://twitter.com/htscarolinas) [![Untitled design - 2020-11-19T112859.003](https://blogs.heattransfersales.com/hs-fs/hubfs/Untitled%20design%20-%202020-11-19T112859.003.png?width=24&name=Untitled%20design%20-%202020-11-19T112859.003.png)](https://www.youtube.com/channel/UCX51QZbsuqCtu2PxtW9jMEg) - [Home](https://heattransfersales.com/) - [Products](https://heattransfersales.com/products) - [Manufacturers Represented](https://heattransfersales.com/products) - [Packaged Systems](https://heattransfersales.com/products) - [Customer Service](https://heattransfersales.com/customer-service) - [Parts](https://heattransfersales.com/parts) - [Pump Repair](https://heattransfersales.com/pump-repair) - [Service](https://heattransfersales.com/service) - [Pump'nFlo](https://heattransfersales.com/pump-nflo) - [Resources](https://heattransfersales.com/resources) - [Training](https://heattransfersales.com/training) - [Sustainable System Concepts](https://heattransfersales.com/sustainable-system-concepts) - [Airside HVAC](https://heattransfersales.com/hvac-equipment) - [Plumbing Equipment](https://heattransfersales.com/plumbing-equipment) - [Building Automation](https://heattransfersales.com/building-automation) - [Blog](https://blogs.heattransfersales.com/blog) - [Careers](https://heattransfersales.com/careers) - [About Us](https://heattransfersales.com/about-us) - [History](https://heattransfersales.com/history) - [Privacy Policy](https://324b4bc7-5729-4ace-b8c0-bc77b425b76e.filesusr.com/ugd/ff46b9_f6100e8b535d465f9fb060f60f8049cc.pdf) - [Terms of Use](https://324b4bc7-5729-4ace-b8c0-bc77b425b76e.filesusr.com/ugd/ff46b9_8a108a4c73734c8ca00866bdecf7cb60.pdf) - [Contact](https://heattransfersales.com/contact) ![HTS_Logo_Symbol_White_CMYK](https://blogs.heattransfersales.com/hs-fs/hubfs/HTS_Logo_Symbol_White_CMYK.png?width=52&height=52&name=HTS_Logo_Symbol_White_CMYK.png "HTS_Logo_Symbol_White_CMYK") All content © 2020, Heat Transfer Sales