Hammer Unions

Figure No.

Assembly colour key standard service.

Pressure Rating (PSI) Nominal Pipe Size
Standard Service Sour Gas Service INCH 1 11/4 11/2 2 21/2 3 4 5 6 8 10 12
Cold Working Test Cold Working Test mm 25 32 40 50 65 80 100 125 150 200 250 300
100   1,000 1,500 N/A N/A                          
200   2,000 3,000 N/A N/A                          
206   2,000 3,000 N/A N/A                          
207   2,000 3,000 N/A N/A                          
300   2,000 3,000 N/A N/A                          
400   2,500 3,750 2,500 3,750                          
400   4,000 6,000 4,000 6,000                          
600   6,000 9,000 N/A N/A                          
602   6,000 9,000 6,000 9,000                          
1002   10,000 15,000 7,500 11,250                          
1003   10,000 15,000 7,500 11,250                          
1502   15,000 22,500 10,000 15,000                          
2202   N/A N/A 15,000 22,500                          

N/A = Not available

Flex-It recommends butt weld unions for sour gas applications.

 

Material

hammer union quickrefchart

Our unions are manufactured from steel forgings using materials appropriate to specific pressure ratings.

End Connections

Sara unions are available in a choice of end connections. API line pipe threads are standard. Butt weld end welds can be provided. Customer to specify schedule of pipe while ordering.

Sour Service

Sour service is available and all H S service 2 parts of Sara unions conform to the latest NACE specifications.

Low Temperature Service

Sara unions can be supplied for low temperature applications with suitable impact value testing.

Interchange Ability

All our union components of the same size and figure number are Weco interchangeable. All Sara union nuts have three hammer lugs.

Traceability

Flex-It's unions are supplied with full traceability documentation for each component.

minimum non shock test pressure

 1

2

low pressure union

Low pressure union:

1000psi (69 Bar)

Threaded and butt weld general purpose union

Threaded and butt weld general purpose union:

2000psi (138 Bar)

Flat face union for vacuum lines

Flat face union for vacuum lines:

2000psi (138 Bar)

Mud and slurry union

Mud and slurry union:

2" to 4": 4000psi (276 Bar)

5" to 12": 2500psi (172 Bar)

Used in steam lines with bronze seal to prevent corrosion

Used in steam lines with bronze seal to prevent corrosion:

6000psi (414 Bar)

Used in cementing, fracturing, acidizing, testing and choke and kill lines

Used in cementing, fracturing, acidizing, testing and choke and kill lines:

1" to 4": 10000psi (690 Bar)

5" and 6": 7500psi (517 Bar)

Used where pipe lines are misaligned

Used where pipe lines are misaligned:

7° misalignment is accepted.

2" to 3": 10000psi (690 Bar)

4" and 5": 7500psi (517 Bar)

Used in cementing, fracturing, acidizing, testing and choke and kill lines

Used in cementing, fracturing, acidizing, testing and choke and kill lines:

15000psi (1034 Bar)

Female stem with nut

Female stem with nut

Threaded and weld-on cap

Threaded and weld-on cap

Cold working pressure

2000psi (138 Bar)

Painted green for easy identification

Painted green for easy identification

15000psi (1034 Bar)

500 PSI CWP

500 PSI CWP

Recommended for air, water, oil or gas service to 500 PSI NSCWP. Standard subs are threaded for API line pipe.

1,000 PSI CWP

1,000 PSI CWP

Recommended for air, water, oil, or gas service to 1,000 PSI NSCWP. Standard subs are threaded for API line pipe and are Weco interchangeable. Also available with butt weld ends.

2,000 PSI CWP

2,000 PSI CWP

Recommended for air, water, oil, or gas service to 2000 PSI NSCWP. A union of great utility meeting most requirements in the medium pressure ranges. Precision seating surfaces assure dependable pressure seal. Standard subs are threaded for API line pipe and are Weco interchangeable. Sizes of 2" and above also available with butt weld end connections.

2,000 PSI CWP

2,000 PSI CWP

Recommended for air, water, oil, or gas service to 2,000 PSI NSCWP. A blanking cap with Buna-N 'O' ring seal provides an efficient and dependable closure. The threaded sub is interchangeable with Fig. 200 threaded sub. Also available with butt weld ends.

2,000 PSI CWP

2,000 PSI CWP

Recommended for production systems with electrolytic corrosion problems Laminated insulating rings provide 35 million Ohms resistance across the union. O-ring in male sub provides a positive primary seal. Seal ring in female sub delivers a positive secondary seal.

4,000 PSI CWP

4,000 PSI CWP

Recommended for air, water, oil, or gas service to 4,000 PSI NSCWP. Utilizes precision ball and cone seating surfaces for easy alignment and dependable pressure seal. Sizes over 4" are rated to 2,500 PSI NSCWP. Also available with a lip-type seal in 2" size only as Fig 402.

6,000 PSI CWP

6,000 PSI CWP

Recommended for air, oil, and gas or steam service to 6,000 PSI NSCWP. Rugged and fast 2 pitch acme thread makes this the quickest union to makeup or break out (only two turns). The threaded sub is fitted with a bronze seat insert for added effectiveness in pressure sealing.

6,000 PSI CWP

6,000 PSI CWP

Recommended for air, water, and oil, gas or mud service to 6,000 PSI NSCWP. This union has a replaceable lip-type seal ring of Buna-N specifically designed to minimize fluid flow turbulence. Lip-type ring provides a pressure seal and protection for metal-to metal seating surfaces. Smaller and lighter than Fig. 600 unions and are recommended for manifold and truck mounting where size and weight are critical.

10,000 PSI CWP

10,000 PSI CWP

Recommended for air, water, oil, gas and mud service to 10,000 PSI NSCWP. This union has a replaceable lip-type seal ring of Buna-N specifically designed to minimize fluid flow turbulence. The lip-type ring works similarly as in the Fig. 602 union. These unions are for use on high pressure systems and trucks.

10,000 PSI CWP

10,000 PSI CWP

Recommended for high pressure manifolding and drilling rig use where alignment of piping components is a problem. Recommended for air, water, and oil, gas or mud service to 10,000 PSI NSCWP. This union has a ball seat that allows a total of 15 (±7½) angular adjustment. An 'O' ring seal in addition to the metal-to-metal seat assures a pressure tight connection.

15,000 PSI CWP

15,000 PSI CWP

Recommended for air, water, oil, gas and mud service to 15,000 PSI NSCWP. This union has a replaceable lip-type seal ring of Buna-N specifically designed to minimize fluid flow turbulence. The lip-type ring also provides a pressure seal and protection for metal to metal seating surface and are recommended for manifold and truck mounting or other installations where high pressure is encountered.

2,000 PSI CWP

2,000 PSI CWP

Recommended for standard service to 20,000 PSI NSCWP. Available in butt weld end connections only. Available as Fig 2202 for sour service (15,000 PSI WP).

500 - 6,000 PSI CWP

500 - 6,000 PSI CWP

Recommended for use in flow lines to isolate for cathodic protection. The sealing action is provided by 'O' Rings fitted into a machined groove between the two metal mating parts. The metal parts are separated by non-conductor gaskets that avoid penetration to flow. seepage and resistant to acids, chemicals and temperatures encountered in normal service. Maximum temperature is 250º F.

1,000 - 6,000 PSI CWP

1,000 - 6,000 PSI CWP

Designed for use on manifolds, jumper assemblies and other installations where a blank cap connection is required. This Union can be interchanged with subs of fig YH-300, if required. The cap is furnished blank as standard, but can be drilled and tapped for a 1/8"-1" NPT for a bleeder plug.

1,000 - 6,000 PSI CWP

1,000 - 6,000 PSI CWP

It is a flat face Union with 'O'- Ring fitted into the groove of the female sub. The 'O'-Ring is completely enclosed with the flat face of mating part and becomes more effective as additional pressure is applied.

Air Seal Union

150 PSI CWP

Recommended for
Mud suction lines, return lines, low pressure fluid lines.
• Inflatable tube is used to provide tight seal.
• Rig air is used to inflate the tube.
• Sealing is maintained even if pipe is mis-aligned.
• Available in 4, 6, 8, 10, 12 and 16".

1,000 - 6,000 PSI CWP

fig 210 table 01

Recommended for 
Mud tanks, mud tank connecting lines, and pump suction flanges
• Nitrile seal provides a compression seal.
• Elongated cross-section of seal ring ensures greater sealing surface when in contact with the pipe.
• Accepts up to 7º pipe misalignment.
• 6, 8, and 10-inch sizes require butt-weld.

fig 210 table 02