Valve Principles PREPARED FOR November 20, 2018

Valves Multi-Turn Gate Provide closure via the rising or lowering of a disc through the turning of a round handle Pros Suitable for a wide-variety of media and pressure Cost-effective Meets most specs Available in a wide variety of materials and connections

Valves Multi-Turn Gate Provide closure via the rising or lowering of a disc through the turning of a round handle Cons Does not usually provide positive shut-off Old technology More prone to seizing

Valves Multi-Turn Globe Similar to gate, used for balancing Pros Economical alternative to “Balancing” valves Cons Older Technology More prone to seizing

Valves ¼ Turn Ball A ball valve regulates control by turning a ball (usually chrome-plated or stainless steel) with a passage manufactured into it via a handle or actuation. Pros Simple design Many inexpensive options Provides positive shutoff Cons High price for certain applications Steam Fuel oil Consulting engineers and facilities reluctant to specify for steam service

Valves ¼ Turn Butterfly A disc is rotated 45-degrees within the valve body, stopping flow Pros Positive shutoff available Widest variety of applications Smaller take-out Cons Lead times for certain applications Consulting engineers and facilities reluctant to specify for steam service Pricing

Valves ¼ Turn Butterfly When ordering/pricing butterfly valves Is this valve double dead-end? It should be. What is the lead time? Is this a “Lug” style? Operator style: lever or gear?

Conclusion PREPARED FOR November 20, 2018