Shop › Pressure Relief Valve - 8 psi Image 1 of 1 Pressure Relief Valve - 8 psi $24.99 Our pressure relief valve - 8psi is made from 304 stainless steel. The threads are 1/2 inch FPT. Add To Cart Added! Our pressure relief valve - 8psi is made from 304 stainless steel. The threads are 1/2 inch FPT. Reviews Reviewer Name Review Date Star Rating Description Posted on Etsy Product Show More You Might Also Like 2" Copper Coil for 2" DIY Condenser $52.99 Bubble Plate Gasket 2" - 100% Silicone $2.99 Liebig Condenser DIY Kit 1/2" $54.95 Bubble Plate Assembly - 4 inch $199.95 Garden Hose Attachments for Liebig Condenser $11.99