COPPER FITTINGS

Description:
Copper Fittings (Copper Pipe Fittings) are used in a wide range of applications, particularly in residential, commercial and industrial environments, from cold and hot water pipes to circulating heating and so on. The copper fittings we provided are made in accordance with ASME/ANSI B16.22. NIBCO copper fittings are most commonly used for air conditioning pipe works due to the efficiency and cost effectiveness, the fittings have accuracy of construction and design which allow copper plumping more efficiently and minimize the cost of the fittings. The brand NIBCO is from the USA and Mexico. NIBCO copper fittings can be divided into two series: (1) wrought copper fittings, and (2) cast copper fittings. There are two available materials for copper fittings, namely copper or bronze.

The application range of cast copper alloys is extremely wide, ranging from ordinary plumbing products to precision electronic components, they have been effectively used in every industrial market category. It is suitable for the most advanced marine and nuclear equipment. Their advantageous properties can often be used in useful combinations in various applications.

Copper fittings can withstand pressures up to 200 PSI, therefore it is suitable for low pressure use. The three common joint types for copper fittings are brazing, soldering, and threaded. The size range that we offer for these fittings are from 1/4" to 8”.

Brand:

NIBCO

Size Range	1/4" to 8"
Design Standard	ASME B16.22 / B16.24
Material	Copper Bronze
Working Pressure	Up to 200 PSI
Type of Joint	Brazing Solderin Threaded (NPT)
Origin	USA

Catalogue:
Copper Fittings

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Literature:
Copper Fittings

Having difficulties looking for Copper Fittings? We can help you because we have all sizes.

Product Information of Copper Fittings

1. What is NIBCO copper fitting made of?

Casting fittings are made of copper alloy standard C84400, with a chemical composition of copper (81% Cu), zinc (9% Zn), lead (7% Pb), and tin (3% Sn), which conforming to ASTM B584 specifications; at the same time wrot copper fittings are made of pure copper rolled products conforming to ASTM Made into B75 specification, which is alloy.

Copper Female Adapter C x F

2. Any difference between Wrought (wrot) Copper Fittings and Cast Copper Fittings?

Wrought (wrot) Copper Fittings
Wrought (also known as wrot) copper fittings are used for pressure system applications. It is manufactured in accordance with the requirements of ASME/ ANSI B16.22, wrought copper and copper alloy solder joint pressure fittings. These copper fittings are made of several types of alloys, C10200, C12000, C23000 or any copper alloy that contains chemical composition, ratio of atoms in molecules of chemical substances:

at least 84% of copper (Cu) and,
up to 16% of zin (Zn).

These copper fittings are used with ASTM B88 seamless copper pipes and the standard outer diameter (OD) sizes start from 1/4" to 12" nominal bore. The size of any threaded female or male connections conform to the nominal pipe size and ASME/ANSI B1.20.1 requirements.

The burst pressure of these wrot fittings is 4 times the rated internal working pressure of M, L, and K-type annealed and tempered seamless copper pipes. The fittings marking should comply with MSS SP-25. There is a permanent mark indicating the manufacturer’s name or trademark. If the welding surface may be damaged during the installation, the mark can be omitted from the joint body.

Model No.	Type	Description
600	Wrot	Reducing Coupling C x C
600-RS	Wrot	Coupling with Rolled Tube Stop C x C
600-DS	Wrot	Coupling with Dimpled Tube Stop C x C
600-2	Wrot	Reducing Coupling Ftg x C
601	Wrot	Coupling without Stop C x C
603	Wrot	Adapter C x F
603-2	Wrot	Fitting Adapter Ftg x F
604	Wrot	Adapter C x M
604-2	Wrot	Fitting Adapter Ftg x M
606	Wrot	45° Elbow C x C
606-2	Wrot	45° Elbow Ftg x F
607	Wrot	90° Elbow Close Rough C x C
607-I	Wrot	90° Elbow Intermediate Radius C x C

Model No.	Type	Description
607-LT	Wrot	90° Elbow Long Radius C x C
607-2	Wrot	90° Elbow Close Rough Ftg x C
607-2-I	Wrot	90° Elbow Intermediate Radius Ftg x C
607-2-LT	Wrot	90° Elbow Long Radius Ftg x C
607-2-2	Wrot	90° Elbow Close Rough Ftg x Ftg
607-2-2-LT	Wrot	90° Elbow Long Radius Ftg x Ftg
611	Wrot	Tee C x C x C
611-2	Wrot	Tee C x Ftg x C
617	Wrot	Tube Cap C
618	Wrot	Flush Bushing Ftg x C
618-3	Wrot	Flush Bushing Ftg x F
633-W	Wrot	Union C x C

Cast Copper Fittings
The usage of cast copper alloy fittings are for solder joint applications, manufactured in accordance with ASME/ ANSI B16.18 requirements, and cast copper alloy solder joint pressure fittings. The required standard quality of the copper fittings are ASTM B62, alloy C83600 or the chemical and tensile requirements of ASTM B62, C84400 or C83800 alloy.

Basically, the cast fittings contain chemical composition of:
(1) 85% copper (Cu),
(2) 5% lead (Pb),
(3) 5% zinc (Zn) and,
(4) 5% tin (Sn)

The size of the copper fittings are designed to fulfill the standard of seamless copper pipes, ASTM B88 sizes range from 1/4" to 12" nominal diameter, and threaded female and male connections conform to the nominal pipe size. The main body of the fitting consists of a permanent mark indicating its trademark. The burst strength of the L-shaped seamless copper pipe should be equal to / bigger than the burst strength of the actual fittings.

Class 125 and Class 250 cast bronze threaded fittings are made to comply with ASME/ ANSI B16.5 standards. Besides, it is designed to comply with the standard of ASTM B62, alloy C83600 or the chemical and tensile standard of ASTM B584, alloy C83800 or C838400. In order to utilize smaller sizes bars to make fittings, including wrought plugs, round or hex bushing, caps and couplings, the alloy needs to fulfill the requirements of alloy C32000, C36000 (free-cutting brass rod, bars and shapes) or C31400 (leaded brass).

Model No.	Type	Description
701	Cast	Reducing Coupling C x C
701-D	Cast	Drain Coupling C x C
702	Cast	Eccentric Coupling C x C
703	Cast	Adapter C x F
703-2	Cast	Fitting Adapter Ftg x F
703-5	Cast	Special Drop Adapter C x F
703-5B	Cast	Drop Adapter C x F
704	Cast	Adapter C x M
704-F	Cast	Flush Adapter C x M
704-H	Cast	Hose Adapter C x Hose
704-2	Cast	Fitting Adapter Ftg x M
704-2H	Cast	Hose Adapter Ftg x Hose
706-2	Cast	45° Elbow Ftg x C
707	Cast	90° Elbow Close Rough C x C
707-2-4	Cast	90° Elbow Ftg x M

Model No.	Type	Description
707-3	Cast	90° Elbow C x F
707-3-5	Cast	90° Drop Elbow C x F
711	Cast	Tee C x C x C
717	Cast	Tube Cap C
717-D	Cast	Drain Cap
718-3	Cast	Flush Bushing Ftg x F
733	Cast	Union C x C
733-2	Cast	Union Ftg x C
733-3	Cast	Union C x F
733-4	Cast	Union C x M
735	Cast	Cross C x C x C x C
736	Cast	Crossover Coupling C x C
750	Cast	Bulkhead Fitting C x C
750-3	Cast	Bulkhead Fitting C x F
750-4	Cast	Bulkhead Fitting C x M

Our Copper Fittings are able to connect with Type ‘K’ and Type ‘L’ copper tubes. (Copper N.B size).

Copper Male Adapter C x M

3. What are the 4 types of copper fittings?

There are a variety of copper tubes, which are types K, L, M, DWV and Medical Gas Tube. They are specified by ASTM standard size, and the actual outer diameter is always 1/8” inch bigger than the standard nominal bore size specified. Copper fittings represent a series of sizes with different wall thicknesses. For any given diameter, the wall of the K-type tube is thicker than that of the L-type tube, and the wall thickness of the L-type tube is thicker than that of the M-type tube. The tube size and wall thickness are determining the inner diameters of the fittings.

4. What is the most widely used copper fittings?

Each of the copper fitting tube types would have different applications, you may refer to the following table to identify which type of copper fittings best suited for your project/system. However, we only offer type K and type L copper fittings.

Tube Type	Colour Code	Standard	Common Application
Type K	Green	ASTM B88	Domestic water service and distribution Fire protection Vacuum Natural gas Fuel/ fuel oil Compressed air Snow melting Liquified petroleum (LP) gas Solar
Type L	Blue	ASTM B88	Domestic water service and distribution Fire protection Vacuum Natural gas Fuel/ fuel oil Compressed air Snow melting Liquified petroleum (LP) gas Solar
Type M	Red	ASTM B88	HVAC Vacuum Domestic water service and distribution Solar Fire protection Snow melting Fuel/fuel oil
DWV	Yellow	ASTM B306	Solar Drain, waste, vent HVAC

5. Why is copper plumbing bad?

It is a rare circumstance when a copper plumbing system fails, however it may happen due to several reasons. The common reasons for failure such as:

i. Erosion-corrosion or impingement
The excessive fluid velocity can lead to erosion corrosion or impact in the pipe and/or fittings. Thus, the copper piping industry has enhanced the design for speed limits for copper piping systems.

Hot Water > 140°F (60°C)	2 to 3 feet per second (0.6 to 0.9 meters per second)
Hot Water 140°F (60°C)	4 to 5 feet per second (1.2 to 1.5 meters per second)
Cold Water	5 to 8 feet per second (1.5 to 2.4 meters per second)

ii. Localized High Velocities
The existence of dents, unreamed/ deburred pipe ends before welding and unexpected change of fluid direction can lead to localized high velocity conditions.

iii. Flux Corrosion
Pinhole leakage is the typical feature of flux corrosion, usually at the bottom of the horizontal line. The flux is a slightly corrosive liquid or petroleum-based paste containing zinc and ammonia chloride.

iv. Galvanic Corrosion
The damage to the material caused by the electrochemical interaction between the environment and the materials. Basically, it is slow but persistent and requires the presence of different metals. The presence of galvanic corrosion is caused by the flow of an electric current between certain areas of different metal surfaces. To complete the electric circuit, there must be two electrodes, an anode and cathode, and they must be connected by an electrolyte media, which is water through then only the current can pass. The amount of metal dissolved in the anode is proportional to the number of electrons flowing. The utilization of different metals in the piping system may or may not cause a problem.

v. Aggressive water
In rare cases, there may be a problem of corrosion by aggressive water, and it will be exacerbated by poor design or workmanship. Hard well water contains high total dissolved solids like sulfates and chlorides and high content of carbon dioxide, dissolved oxygen gas. While soft acidic waters lead to green staining of fixtures. The problem can be solved by increasing the pH value about 7.2 or more, however you must consult a qualified water treatment specialist.

vi. Aggressive Soil Condition
Uneven soil characteristics between adjacent parts of the pipe, including different soil aeration, resistivity, or moisture content can create galvanic corrosion cells.

vii. Dezincification
The corrosion in brass dissolved in the form of an alloy and copper component is redeposited on the surface of the brass as metal from the solution, but in a porous form. The zinc component can be taken away from the brass as a soluble salt or can be deposited in situ as an insoluble compound.

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