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How can I repair this HFV (hose failure valve)?

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Gary Wooding	04/06/2021 11:36:15
1074 forum posts 290 photos	I've had this Sievert HFV for about 60 years. I bought it from new. The last time I used it properly was last year, when it seemed OK. On May 1st this year I thought I needed to use the Propane torch, so I tested it out and had to exercise the HFV a few times before the hose filled and the torch was usable. As it happened, the weather precluded it's use, so I put it away until yesterday, when I discovered it was unusable. Does anyone know if, and how, it can be repaired?
Oldiron	04/06/2021 12:05:28
1193 forum posts 59 photos	Having worked in the hydraulics industry for many years I know that HFV's in that context are classed as unrepairable. I would imagine the LP gas regulations contain similar rules. I personally would not want to rely on a repaired HFV. The cost of a new one will be much less than injury or death associated with a hose failure. regards
Gary Wooding	04/06/2021 12:20:49
1074 forum posts 290 photos	Thanks, that rather confirms my suspicions. I've ordered a new one.
old mart	04/06/2021 16:06:27
4655 forum posts 304 photos	Can you take the old one apart and show us the works when the new one arrives? I would guess that there is a valve kept open by a very weak spring on the downstream side but I have never heard of one of these. I think they would work well if the pipe was severed, but not so likely if it just leaked.
John Reese	14/06/2021 02:22:56
1071 forum posts	I think a better description would be excess flow shutoff.

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