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Re: NNG: Safety Valve Question; Why are there two different types?

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rehunn

April 07, 2017 05:16PM

Registered: 16 years ago
Posts: 4,894

This can all get real fuzzy, if you're going to do work once (absolute safety) you might as well use a rupture disc and I'm surprised that issue hasn't been
approached. The dollars in the valve (use often) are in the design to minimize the differential between open and reseat (closed), from what I've seen the
Strasburg design works quite well in that regard.

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Subject	Author	Posted
NNG: Safety Valve Question; Why are there two different types?	C&TS488fan	April 06, 2017 10:45AM
Re: NNG: Safety Valve Question; Why are there two different types?	Linn W. Moedinger	April 06, 2017 12:01PM
Re: NNG: Safety Valve Question; Why are there two different types?	C&TS488fan	April 07, 2017 04:10PM
Re: NNG: Safety Valve Question; Why are there two different types?	rehunn	April 07, 2017 05:16PM
Re: NNG: Safety Valve Question; Why are there two different types?	Linn W. Moedinger	April 10, 2017 08:30AM
Re: NNG: Safety Valve Question; Why are there two different types?	Earl	April 10, 2017 10:07AM
Re: NNG: Safety Valve Question; Why are there two different types?	rehunn	April 10, 2017 12:48PM
Re: NNG: Safety Valve Question; Why are there two different types?	Earl	April 07, 2017 11:57PM
Re: NNG: Safety Valve Question; Why are there two different types?	rehunn	April 08, 2017 11:29AM
Re: NNG: Safety Valve Question; Why are there two different types?	C&TS488fan	April 10, 2017 09:43PM
Re: NNG: Safety Valve Question; Why are there two different types?	rehunn	April 11, 2017 11:27AM
Re: NNG: Safety Valve Question; Why are there two different types?	J.B.Bane	April 10, 2017 09:45PM

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488 stops for water at Los Pinos tank on closing day Oct. 1979. Photo courtesy Don Richter

The NGDF was started by Don Richter and is currently operated in his memory by Nathan Holmes and others. Others who have contributed to the upkeep of this board are (in no particular order): Charles McCandless, Everett Lueck, Ted Wilton, Cole Adams, James Bane, John Moellmer, Jon Bentz, Linn Moedinger, lloyd lehrer, Rod Jensen, John Craft, Steven Forney, Herb Kelsey, Bill Ramaley, Russ Sperry (El Russo Loco), Josh McNeal, John West, Jim Armstrong, Bob Bergstrom, Greg Scholl, Blake Forbes Doug van Veelen and Mark Fuller.