Model 250 quick disconnect coupling with a 1/4â€³ FPT inlet. This product is for indoor/outdoor use. Pressure rated at 20 PSI and an automatic shut-off. Model 250 couplings are low pressure quick disconnects approved for propane pressure settings of 20 PSI or less. All model 250 quick disconnect couplings are designed certified by CSA International, listed by UL and are 100% factory tested. According to standard this product must be used on all new (1999 or newer) RVâ€™s and mobile homes. This can also be used with propane cooking appliances.