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SPLIT NUT UNIONS, HEATER TAILPIECES, UNI-NUTS & GASKETS

 

How to Measure for a Split Nut Replacement


Measure the Inside Diameter (ID) of your current "CLOSED" split nut or regular nut. If it measures:

2-7/16" then you need a 1-1/2"
3-1/16" then you need a 2"
3-11/16" then you need a 2-1/2"

 

SPLIT NUT UNIONS

1.5" Split Nut

Part Number: 89-238-1015

Identical to:
700400
121108015
400-5491

Description
1-1/2" split compression nut

1.5" Split Nut, Small Flange
(Fits Pump Tailpieces)

Part Number: 89-238-1017

Identical to:
700410
121109015

Description
1-1/2" split nut (small flange fits most pump union tailpieces)

2" Split Nut

Part Number: 89-238-1040

Identical to:
700310C
121108020
20-1021
400-5421

Description
2" split compression nut

 

HEATER SPLIT NUTS

1 1/2" Heater Split Nut W/Screws, Waterway

Part Number: 89-238-1012

Identical to: 400-5491

Description
1 1/2" Heater Split Nut W/Screws

2 1/2" Split Nut, For Heaters

Part Number: 89-238-1042

Identical to: 121108025

Description
2 1/2" Split Nut, For Heaters
 


2" Split Nut, for Heaters  w/Screws, Waterway

Part Number: 89-238-1044

Identical to:
610266
400-5421 

Description
2" Split Nut, for Heaters w/Screws, Waterway

 

UNI-NUTS

Aquatemp Products Heater Uni-Nut®
It is a patented design to end leaking split nuts on heaters. The Uni-Nut® is a one-piece nut that can be tightened by hand and changed in the field by removing a color-coded retainer. The black retainer is generally used on 1-5/8" tube while blue retainers are used on 5.5kW heaters. Red retainers usually denote heaters of other wattages. Although there may sometimes be exceptions, the Uni-Nut® is generally not a replacement for split nuts due to different flange sizes

 

Heater Uni-Nut 1-1/2" for 1.9"/1-5/8" Housings

Part Number: 89-371-1009

Identical to:
609876
AQT8602338
86-02338

Description
Heater Uni-Nut 1-1/2" for 1.9"/1-5/8" Housings

Heater Uni-Nut 2" for 2-1/4" Housings

Part Number: 89-371-1013

Identical to:
610944
86-02335


Description
Heater Uni-Nut 2" for 2-1/4" Housings



Heater Uni-Nut 2-1/2" for 3" Housings

Part Number: 89-371-1017

Identical to:
611397
86-02370


Description
Heater Uni-Nut 2-1/2" for 3" Housings


UNI-NUT RETAINERS


1-1/2" Uni-Nut Retainer for 1-5/8" Housings

Part Number: 89-371-1040


1-1/2" Uni-Nut Retainer For 1.90" Housings

Part Number: 89-371-1041


1-1/2" Uni-Nut Retainer For 1.90" Housings

Part Number: 89-371-1043


2" Uni-Nut Retainer For
2-1/4" Housings

Part Number: 89-371-1047


2" Uni-Nut Retainer For
2-1/4" Housings

Part Number: 89-371-1051


2-1/2" Uni-Nut Retainer For
 3" Housings

Part Number: 89-371-1055

 

TAIL PIECES


1.5" Tailpiece w/ O-ring For Split Nut


Part Number:
89-238-1020


Heater Union Half W/Split Nut 
1-1/2"Slip

Part Number:
89-395-1300


Heater Union Half W/Split Nut 1-1/2"Slip-2"Spigot

Part Number:
89-395-1302


Heater Union Half W/Split Nut
2"Slip

Part Number:
89-395-1304


1.5" mpt Tailpiece w/O-ring For Split Nut

 


1.5" spigot Tailpiece w/o-ring for   split nut

Part Number:
89-238-1025


2" mpt Tailpiece w/O-ring For Split Nut

Part Number:
89-238-1055


2" Tailpiece w/Gasket for Split Nut

Part Number:
89-238-1045

 


Item Retail Price Quantity
89-371-1040 - 1-1/2 Inch Uni-Nut Retainer for 1-5/8 Inch Housings - 86-02348 - 89-371-1040 $6.28 $3.14
89-371-1041 - 1-1/2 Inch Uni-Nut Retainer For 1.90 Inch Housings - 86-02339 - 89-371-1041 $6.28 $3.14
89-371-1043 - 1-1/2 Inch Uni-Nut Retainer For 1.90 Inch Housings SUB WITH PART 89-371-1041 - Replaced By Part 89-371-1041 - 86-02340 - 89-371-1043 $6.28 $3.14
89-238-1020 - 1.5 Inch Tailpc w/ O-ring For Split Nut - 417-4090 - UPC - 806105085412 - 89-238-1020 $12.12 $6.06
89-238-1025 - 1.5 Inch spg Tailpcs w/o-ring for split nut - 417-4050 - UPC - 806105085351 - 89-238-1025 $12.12 $6.06
89-238-1045 - Tailpiece, 2 Inch bt x 2 Inch s, for Split Nut - 417-5050 - UPC - 806105085610 - 89-238-1045 $12.62 $6.31
89-238-1012 - 1 1/2 Inch Heater Split Nut W/Screws,Waterway - 400-5491 - UPC - 806105081896 - 89-238-1012 $13.12 $6.56
89-371-1047 - 2 Inch Uni-Nut Retainer For 2-1/4 Inch Housings - 86-02336 - 89-371-1047 $13.12 $6.56
89-371-1051 - 2 Inch Uni-Nut Retainer For 2-1/4 Inch Housings - Replaced By Part 89-371-1047 - 86-02337 - 89-371-1051 $13.12 $6.56
89-238-1017 - 1.5 Inch Split Nut Sm Flange (Fits Pump Tailpieces) - 121109015 - 89-238-1017 $13.12 $6.56
89-238-1044 - 2 Inch Split Nut for Heaters, w/Screws, Waterway - 400-5421 - UPC - 806105081858 - 89-238-1044 $13.78 $6.89
89-238-1015 - 1.5 Inch Split Nut - 121108015 - 89-238-1015 $13.78 $6.89
89-238-1055 - 2 Inch mpt Tailpiece w/O-ring For Sol/Split Nut - 417-5140 - UPC - 806105085757 - 89-238-1055 $14.22 $7.11
89-238-1040 - 2 Inch Split Nut - 121108020 - UPC - 806105081858 - 89-238-1040 $13.95 $7.55
89-371-1009 - Heater Uni-Nut 1-1/2 Inch for 1.9 Inch /1-5/8 Inch Housings - 86-02338 - 89-371-1009 $15.16 $7.58
89-371-1059 - 2-1/2 Inch Uni-Nut Retainer For 3 Inch Housings SUB WITH PART 89-371-1055 - Replaced By Part 89-371-1055 - 86-02361 - 89-371-1059 $15.42 $7.71
89-371-1017 - Heater Uni-Nut 2-1/2 Inch for 3 Inch Housings - 86-02370 - 89-371-1017 $18.46 $9.23
89-395-1300 - Heater Union Half W/Split Nut 1-1/2 Inch Slip - 0611-15 - 89-395-1300 $18.58 $9.29
89-238-1042 - 2 1/2 Inch Split Nut, For Heaters - 121108025 - 89-238-1042 $18.84 $9.42
89-395-1302 - Heater Union Half W/Split Nut 1-1/2 Inch Slip-2 Inch Spig - 0611-18 - 89-395-1302 $19.24 $9.62
89-395-1304 - Heater Union Half W/Split Nut 2 Inch Slip - 0611-20 - 89-395-1304 $19.52 $9.76
89-371-1055 - Uni-Nut, 2-1/2 Inch mbt, for 3 Inch Housings, w/Retainer - PART 89-355-1017 - 86-02360 - 89-371-1055 $15.42 $13.44

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