Richard71 Posted September 1, 2018 Report Share Posted September 1, 2018 Does anyone know the thread size of the return hose tail on the diaphragm type fuel PRV. The item fitted to mine has a 90deg elbow where I would prefer a straight hose tail as per this kit https://www.revingtontr.com/product/rtr4456k/name/fuel-pressure-regulator . Regards, Richard. Quote Link to post Share on other sites
Mike C Posted September 1, 2018 Report Share Posted September 1, 2018 If you haven't got a thread gauge, you might have to take the PRV to a big plumbing shop or ask Revington. Quote Link to post Share on other sites
Richard71 Posted September 2, 2018 Author Report Share Posted September 2, 2018 It appears to be 1/8th NPT, I just couldn't be bothered removing it from the car earlier. Quote Link to post Share on other sites
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