How often does an existing closed loop hot water heating or chilled water cooling system get reused as part of a building renovation project, and/or used to expand the area served by the system coverage to provide additional heating or air conditioning?
Bonomi North America is introducing a new series of NSF-Certified butterfly valves with factory-installed electric or pneumatic actuators for potable water applications with high flow requirements. The new N500 Series wafer and N501 lug body valves feature ductile iron body construction with EDPM rubber seats. They are available with stainless steel disc (N500S/N501S) or nylon-coated disc (N500N/N501N). All are approved to NSF /ANSI 61,372. Sizes range from 2 in through 12 in.
Danfoss has introduced the ICV (H)A4A control valve with flanges, the full replacement for all common flanged control valves on the market. Inspired by the ICV Flexline™ platform, the company said the ICV (H)A4A control valve’s modular design extends the lifetime of existing refrigeration installation while delivering a significant reduction in cost, energy, and servicing and maintenance times.
This chiller plant retrofit team encountered challenging existing conditions and an-swered with savvy choices for piping and valves as well as the chillers. Good communication, accurate documentation, and a creative bidding idea you might want to borrow also contributed to bringing the mechanical work in effectively and on budget.
Pressure independent control valves proved to be a key in wringing the benefits out of smartly managed chilled water temperature, but that wasn’t all. Airside energy recovery, desiccant dehumidification to eliminate reheat in operating room environments, and upgrading to ECM fan systems have all contributed to this hospital’s fiscal wellness.
For use in a wide range of processing applications ranging from sanitary and food processing to water treatment and chemical operations, Matco-Norca now offers a range of carbon steel and stainless steel (CS & SS) valves.
Many engineers tend to avoid or delegate the nitty gritty of a ground source heat pump system, from soil moisture effects to building system (im) balance. It's time for designers to get in the loop. Learn more about Grounded In Reality in the December issue. Other topics in the December issue include health care HVAC, Boilders, check out the Back2Basics, and more.