Waterway Tiny Might pump. Designed for 24 hour circulation. Energy efficient, uses less power than a 100 watt light bulb. 1" union connections, wet end can be rotated for easy installation. Comes with power cord and AMP connector. 1/16 hp circulation pump, 1180 gallons per hour, sold less unions.
 

Tiny Might Pumps

Tiny Might pump 115v, 1/16 hp

Tiny Might pump 230v, 1/16 hp

Unions ( 2 required for new installations )

Tiny Might pump union 1", sold by the each

Cal Pump circulation pump. Stainless steel and bronze construction. 1/2" MPT suction and 1/4" MPT discharge with flow adjuster. Comes with power cord and AMP connector. 170 gallons per hour.
 

 Cal Pump S-225 circulation pump. 115 volt

Laing Low Flow Circulation Pump.
Magnetic drive eliminates the problem of shaft seals.
Self lubricating, never needs lubrication.

Pump has 3/4" noryl inlet and outlet hubs which fits plastic tubing such as:
H2O# 5024332 which is  3/4" ID x 1" OD .
 

115 volt - Laing E10 circulation pump

230 volt - Laing E10 circulation pump

Grundfos spa circulation pump. Energy efficient and quiet operation with self draining pump housing. 1" barb connector fittings. Optional adapters convert to 3/4" slip or 1" spigot PVC. Used on 24 hour portable spa circulation systems.

Grundfos pump 115 volt, 1/25 hp

Grundfos pump 230volt, 1/25 hp

Set of 2 Quick Connect 3/4"Slip  or 1" Spigot Adapter

24-hour circulation pump designed for portable spas, continuous duty design. Side discharge with 1-1/2 in. inlet and outlet, quick disconnect unions for easy installation and maintenance. Available 115 or 230 volts.
Motor runs at 1725 RPM.
 

115 volt, 1.3 amps, 1/15 hp pump with unions and cord amp connector

230 volt, .63 amps, 1/15 hp pump with unions and cord amp connector