The VRT100-190 unloader bypass kit from Water Cannon is ideal for high gpm applications and hydroexcavating systems. The 1/2-inch inlet, outlet and bypass ports provide high efficiency and maximum flow rates up to 26.4 gpm. Pressures are adjustable up to 2,000 psi, and the pressure adjustment nuts can be locked in place to avoid accidental overpressurization. 800/333-9274; www.watercannon.com