• Built-in pressure demand switch shuts pump off at maximum pressure

• Three-chamber design provides smooth, pulse-free flow
• Flexible diaphragm design allows pump to run dry without damage.
• Compact — mount in any position

Model 75420-20 has an 80 psi internal bypass.
What's included: 115 VAC models include a 6-ft power cord; 12 VDC models have 6" leads.