Unions
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We stock heater unions and pump unions for a variety of plumbing sizes.  Some of the most popular sizes found in hot tubs are 1 1/2" connectors, 2" connectors and 2 1/2" connectors. 

    Product Name+   Price   Buy Now 
 Pump Union 1.0 x 1.0s  WW400­1990
Pump Union 1.0 x 1.0s

Pump Union

1.0 x 1.0s

 

 $7.15
$4.67 


 Pump Union 1.5 x 1.5s  WW400­4060
Pump Union 1.5 x 1.5s

Pump Union

1.5 x 1.5s

 

 $7.50
$4.89 


 Pump Union 1.5 x 1.5spg  WW400­4240
Pump Union 1.5 x 1.5spg

Pump Union

1.5 x 1.5spg

 

 $12.75
$8.32 


 Pump Union 2.0 x 2.0s Waterway  WW400­5570
Pump Union 2.0 x 2.0s Waterway

Pump Union

2.0 x 2.0s Waterway

This pump union comes with o-ring and is used for ...
read more...

 $8.99
$5.87 


 Pump Union 2.0 x 2.0spg (1.5s)  WW400­5680
Pump Union 2.0 x 2.0spg (1.5s)

Pump Union

2.0 x 2.0spg (1.5s)

 

 $13.19
$8.61 


 Pump Union 2.5 x 2.0s  WW400­5990
Pump Union 2.5 x 2.0s

Pump Union

2.5 x 2.0s

 

 $17.29
$11.28 


 Pump Union 2.5 x 2.5s 400-6010  WW400­6010
Pump Union 2.5 x 2.5s 400-6010

Pump Union

2.5 x 2.5s

part 400-6010

 

 $17.29
$11.28 


 Pump Union 1.0 x 3/4b tail  WW400­1940
Pump Union 1.0 x 3/4b tail

Pump Union

1.0 x 3/4b tail

 

 $7.15
$4.67 


 Pump Union 1.0 x 1.0b tail  WW400­1970
Pump Union 1.0 x 1.0b tail

Pump Union

1.0 x 1.0b tail

 

 $7.15
$4.67 


 Unions Assembly 1.5s x 1.5s  WW400­3090
Unions Assembly 1.5s x 1.5s

Unions Assembly

1.5s x 1.5s

Self aligning

 

 $16.95
$11.06 


 Unions Assembly 2.0s x 2.0s  WW400­5050
Unions Assembly 2.0s x 2.0s

Unions Assembly

2.0s x 2.0s

 

 

 $18.55
$12.10 


 Unions Assembly 2.0s x 2.0s, Self-aligning  WW400­5090
Unions Assembly 2.0s x 2.0s, Self-aligning

Unions Assembly

2.0s x 2.0s

Self-aligning

 

 

 $19.45
$12.69 


 Unions Assembly 2.5s x 2.5s  WW400­6000
Unions Assembly 2.5s x 2.5s

Unions Assembly

2.5s x 2.5s

 

 

 $28.63
$18.68 


 Pump Union Sweep Ell, 2.0spg  WW400­4300
Pump Union Sweep Ell, 2.0spg

Pump Union Sweep Ell,

2.0spg, 45 degree sweep

 

 

 $13.20
$8.61 


 Pump Union Sweep Ell, 2.0s  WW400­5800
Pump Union Sweep Ell, 2.0s

Pump Union Sweep Ell,

2.0s, 90 degree sweep

 

 

 $15.29
$9.98 


 Union Nut, 1.5 in.  WW415­4000
Union Nut, 1.5 in.

Union Nut, 1.5 in.

 

 

 

 $3.89
$2.54 


 Union Nut, 2.0 in.  WW415­5000
Union Nut, 2.0 in.

Union Nut, 2.0 in.

 

 

 

 $5.91
$3.86 


 Union Nut, 2.5 in.  WW415­6000
Union Nut, 2.5 in.

Union Nut, 2.5 in.

 

 

 

 $11.43
$7.46 


 Split Nut 1.5"  WW400­5491
Split Nut 1.5"

Split Nut

1.5" heater split nut

Selecting the correct size nut:<...
read more...

 $4.29
$2.80 


 2 Inch Buttress Thread by 2 Inch spg Adapter  WW417­5060
2 Inch Buttress Thread by 2 Inch spg Adapter

2 Inch Buttress Thread by 2 Inch spg Adapter

Hot tub PVC plumbing parts - adapters.

...
read more...
 $4.15
$2.71 


 Uni Nut 2.0"  1304B/1304C
Uni Nut 2.0"

Uni Nut

2.0" heater Uni nut

 

 

 $3.39 


 Split Nut 2.0"  WW400­5421
Split Nut 2.0"

Split Nut

2.0" heater split nut

Choosing the correct size nut:read more...

 $4.35
$2.84 


 Split Nut 2.5"  MA0121108025
Split Nut 2.5"

Split Nut

2.5" heater split nut

How to select the correct size nut:read more...

 $12.40
$8.09 


 Pump Union Adapter 1.5 to 2 Inch  MA0060150019
Pump Union Adapter 1.5 to 2 Inch

Pump union adapter converts 1.5" to 2" inlet or outlet.

1.5 x 2.0 union adapter for hot t...
read more...

 $8.49
$5.54 


 Hayward Pump Union Adapter  HAY400­4080
Hayward Pump Union Adapter

Hayward pump union adapter converts 1 1/2" standard union thread to the larger Hayward FINE union...
read more...

 $8.42
$5.49 


 Union Split Nut 1.5"  MA0121109015
Union Split Nut 1.5"

Waterway Union Split Nut 1.5"

Small inner flance fits pump union tailpieces.

 $4.08
$2.66 


 Union Split Nut 2.0"  MA0121109020
Union Split Nut 2.0"

Waterway Union Split Nut 2.0"

Small inner flance fits pump union tailpieces.

 $4.36
$2.84 


 Union Split Nut 2.5"  MA0121109025
Union Split Nut 2.5"

Waterway Union Split Nut 2.5"

Small inner flance fits pump union tailpieces.

 $14.25
$9.29 


 Pump Union 2.0 x 2.0s Pentair  PEN2614029
Pump Union 2.0 x 2.0s Pentair

Pump Union

2.0 x 2.0s Pentair

This pump union comes with o-ring and is used for c...
read more...

 $9.62
$6.28 


 Pump Union 3.0 x 3.0s  WW400­4610
Pump Union 3.0 x 3.0s

Pump Union

3.0 x 3.0s

This pump union comes with o-ring and is used for connectin...
read more...

 $67.35
$43.95 


 Jacuzzi Swivel Union 1.5s 2.0spg  JA31150303
Jacuzzi Swivel Union 1.5s 2.0spg

Jacuzzi Swivel Union 1.5s 2.0spg

Jacuzzi union assembly 1.5s / 2.0spg

 $34.23
$22.34 


 Pump Union 3.0 X 3.0s  WW400­4630
Pump Union 3.0 X 3.0s

Pump Union 3.0 X 3.0s slip connector requires PVC glue to connect to PVC plumbing.

 $13.08
$8.62 


 Union Assembies 1.5s Praher  PR150100
Union Assembies 1.5s Praher

Union Assembies 1.5s Praher

 $9.69
$6.32 


 Union Assembies 2.0s Praher  PR200100
Union Assembies 2.0s Praher

Union Assembies 2.0s Praher

 $10.95
$7.14 


 Union nut 1.5 Sta-Rite  STAU11­182PM
Union nut 1.5 Sta-Rite

Union nut 1.5” Sta-Rite

 $27.68
$18.06 


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