Texsteam 3705-SP Series Pump (Single Head, 8.75 GPD, 500 PSI) Base & Tank Options:Base & 5 Gal 430 SS Tank (+$678.00) which means that they are

which means that they are for WATER STORAGE ONLY

4000 PSI  with a 1/2" plunger and has a 30 SPM gear reducer

Differential pressure: 250 psi (10 bar) maximum

Single or double-headed units with three volume adjustments are available in a wide variety of models

Part Number: TA 124

Texsteam 3705-SP Series Pump (Single Head, 8.75 GPD, 500 PSI) Base & Tank Options:Base & 5 Gal 430 SS Tank (+$678.00) which means that they areThis pump has been discontinued and replaced by the MXG1 1 Series Pump Texsteam series 3700 chemical injectors are pneumatically powered and designed for handling many types of aqueous solutions and other chemicals. Single or double headed units with three volume adjustments are available in a wide variety of models. Injection pressure to 1500 psi can be achieved with air or gas pressure as low as 50 psi. Units can be furnished with or without