Welcome! Log In Create A New Profile

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

Forum List Message List New Topic Print View

rehunn

April 08, 2017 11:29AM

Registered: 16 years ago
Posts: 4,894

What Earl says is 100% true for any direct spring device, once you start flowing it the seating spring needs to overcome both the pressure and the additional force
which is caused (Bernoulli) by the flow itself. We built a couple of two stage steam reliefs many years ago for the Navy with Stellite seats and $3500 would have
about paid for the top 15% of the valve.

Reply Quote

Message List Previous Message Next Message

RSS

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

Sorry, only registered users may post in this forum.

Click here to login

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.