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Simple, straightforward and low shipping rates for these di-electric fittings.



Left/Right & Di-Electric Fittings


If you've been searching for those elusive left/right threaded black iron fittings, you've come to the right place. PlumbingSupply.com® is your source for hard-to-find fittings such as these left/right threaded nipple and coupling sets, left/right fittings, dielectric fittings, and many more fittings (PVC, brass, copper and stainless steel), fixtures (sinks, tubs, toilets and faucets), tools and thousands of other plumbing-related products.

Left/Right Nipple And Coupling Set
Left Right Nipples
Left Right Coupling
    These have standard right-hand threads on one side & reverse (left-hand) threads on the other. These are generally used for gas piping, when unions are not allowed.
Description Price & Quantity
1/2" x 4" Nipple + L/R Coupling $9.16
3/4" x 4" Nipple + L/R Coupling $10.59
1" x 4" Nipple + L/R Coupling $15.13
1-1/4" x 4" Nipple + L/R Coupling $19.51
1-1/2" x 4" Nipple + L/R Coupling $23.44
2" x 4" Nipple + L/R Coupling $29.21

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Need to seal your pipe threads? Click here for PTFE tape and pipe dope.




Left/Right Fittings
Left Right Nipples Left Right Coupling
L/R Nipples
Size Price & Quantity
1/2" x 4" $5.41
3/4" x 4" $6.59
1" x 4" $9.01
1-1/4" x 4" $11.03
1-1/2" x 4" $14.02
2" x 4" $16.44
L/R Couplings
Size Price & Quantity
1/2" $4.40
3/4" $4.79
1" $7.12
1-1/4" $9.93
1-1/2" $11.36
2" $14.36
Note: You need both a left/right nipple & a left/right coupling to use these

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Need to seal your pipe threads? Click here for PTFE tape and pipe dope.




Di-Electric Unions - Forged Steel
Sweat x Fips
Dielectric isolation union
click here to view parts break down
Non Lead Free (not for potable/drinking water)
can use for hydronic heating, irrigation, air lines, etc.
Fitting Size Price & Quantity
1/2" $3.31
3/4" use Lead-Free below
1-1/4" use Lead-Free below
1-1/2" use Lead-Free below
2" $17.24

Need to seal your pipe threads? Click here for PTFE tape and pipe dope.

LEAD-FREE
Fitting Size Price & Quantity
1/2" $4.72
3/4" $5.28
1" $8.49
1-1/4" $13.76
1-1/2" $20.55
2" $27.88

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To copper unions




Di-Electric Unions - Galvanized
Fips x Fips
Dielectric isolation union
click here to view parts break down
Fitting Size Price & Quantity
1/2" $6.35
3/4" $6.52
1" $9.71
1-1/4" $19.04
1-1/2" $24.92
2" $28.67

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Need to seal your pipe threads? Click here for PTFE tape and pipe dope.




Insulated Di-Electric Couplings
Fips x Fips
Internally insulated with ABS plastic. Maximum working temperature 180°F.
Insulated Coupling
Fitting Size Price & Quantity
1/2" $10.82
3/4" $11.07
1" $12.72
1-1/4" $15.85
1-1/2" $19.77
2" $21.80

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Need to seal your pipe threads? See below.




Click here to go to stainless water heater flexes
(they act as dielectric fittings as well)




Thread sealants (IPS threads)
Product Description Price & Quantity
PTFE thread sealing tape PTFE thread sealing tape 1/2" x 260" roll $0.79
1/2" x 520" roll $1.19
1 oz. pipe dope 1 oz. Great White Basic Pipe Joint Compound
- Small, convenient tube
- Great for most plastics and metals
$2.78
Thread Sealing Compound 4 oz. High Quality TU-555 Pipe Joint Compound
- Available in larger sizes, too
- Great for most plastics and metals


Order 12, 24 or 48 of this item for additional savings!
Pricing discounts will show up in your shopping cart.
$7.08

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Frequently Asked Questions

Q. "Any left- and right-hand tricks?"
A. The trick for left- and right-hand fittings and couplings is to get the correct bite the first time. The way to do that is to insert one side of the nipple/coupling and hand-tighten. Count the number of turns to get it to hand-tight. Then take apart and do the same on the other side. If one side took more turns to get it to hand-tighten, then add (or subtract) that number before starting; and turn that amount into the side that took more turns. In other words, the secret is to tighten the same amount after hand-tightening.

Q. "I'm hearing a lot about lead-free these days. What does that have to do with plumbing products and how does the new lead-free legislation affect me?"
A. Basically, the laws implemented Jan. 1st, 2014 require plumbing products that come in contact with drinking water to be essentially lead free (less than 0.25% weighted average). For further information about how the law determines what is lead free, rules regarding which plumbing products must be lead free, and who these laws will affect, please visit our LEAD FREE Plumbing Information page.



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