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FLEXI FLEX

Hammer Unions

Hammer lock unions
  • Material
    Sara Hammer 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 ends 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.
  • Interchangeability
    All Sara unions components of the same size and figure number are Weco interchangeable. All Sara unions nuts have three hammer lugs.
  • Traceability
    Sara unions are supplied with full traceability documentation for each component.
Hammer Unions Chart
Maximum Allowable Non-Shock Pressure (PSIG)

Hammer Unions Products

Fig 50 Union 500 PSI CWP
fig 50 unions
Recommended for air, water, oil, or gas service to 500 PSI NSCWP. Standard subs are threaded for API line pipe.
Size (in.)Length (in.)Nut Radius (in.)Weight (Kg.)
5″51/2″51/4″10.80
Fig 100 Union 1,000 PSI CWP
fig 100 unions
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.
 
Size (in.)Length (in.)Nut Radius (in.)Weight (Kg.)
2″35/8″229/32″2.60
21/2″49/32″35/8″5.20
3″51/8″4″6.20
4″53/4″411/16″10.20
5″633/64″59/16″13.80
6″67/8″67/8″23.20
8″75/16″713/16″32.20
Fig 200 Union 2,000 PSI CWP
fig 200 unions
Recommended for air, water, oil, or gas service to 2000 PSI NSCWP. A unions 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.
Size (in.)Length (in.)Nut Radius (in.)Weight (Kg.)
1a”219/32″2″1.00
11/4″225/32″25/32″1.60
11/2″229/32″213/32″1.60
2″31/4″229/32″2.40
21/2″41/4″35/8″4.50
3″417/32″41/4″6.60
4″415/16″5″9.60
5″73/64″523/32″19.00
6″625/32″61/2″22.00
8″75/16″713/16″29.10
10″93/32″91/16″41.36
Fig 206 Union 2,000 PSI CWP
fig 206 unions
Recommended for air, water, oil or gas service to 2,000 PSI NSCWP. A Buna-N ‘O’ ring is mounted on the plain sub to provide an additional seal. Subs and nuts of the Fig. 206 unions are interchangeable with the Fig. 200 unions. Standard subs are threaded for API line pipe. Sizes of 2″ and above also available with butt weld ends. connections.
Size (in.)Length (in.)Nut Radius (in.)Weight (Kg.)
1″219/32″2″1.00
11/4″225/32″25/32″1.07
11/2″229/32″213/32″1.07
2″31/4″229/32″2.40
21/2″41/4″35/8″5.02
3″417/32″41/4″6.60
4″415/16″5″9.10
6″625/32″61/2″19.30
8″75/16″713/16″29.10
10″93/32″91/16″41.36
Fig 207 Union 2,000 PSI CWP
fig 207 unions
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.
Size (in.)Length (in.)Nut Radius (in.)Weight (Kg.)
3″33/4″23/4″4.45
4″445/64″317/32″7.38
6″537/64″427/32″17.10
Fig 211 Union 2,000 PSI CWP
fig 211 unions
Recommended for production systems with electrolytic corrosion problems Laminated insulating rings provide 35 million Ohms resistance across the unions. O-ring in male sub provides a positive primary seal. Seal ring in female sub delivers a positive secondary seal.
Size (in.)Length (in.)Nut Radius (in.)Weight (Kg.)
2″329/64″31/16″3.00
3″435/64″417/64″6.40
Fig 400 Union 4,000 PSI CWP
fig 400 unions
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.
Size (in.)Length (in.)Nut Radius (in.)Weight (Kg.)
TotalCTR. BR.
2″51/4″1/4″39/16″5.80
3″6″3/8″41/4″9.40
4″87/32″3/8″5″14.40
6″111/32″3/8″65/8″28.80
8″1113/32″3/8″75/8″42.70
10″1037/64″–949/64″56.80
12″107/8″3/8″101/4″74.43
Fig 600 Union 6,000 PSI CWP
fig 211 unions
Recommended for air, oil, gas or steam service to 6,000 PSI NSCWP. Rugged and fast 2 pitch acme thread makes this the quickest unions to makeup or break out (only two turns). The threaded sub is fitted with a bronze seat insert for added effectiveness in pressure sealing.
Size (in.)Length (in.)Nut Radius (in.)Weight (Kg.)
TotalCTR. BR.
1″39/16″1/4″225/32″1.59
11/2″47/8″1/4″37/32″4.30
2″67/16″1/4″33/4″6.80
21/2″79/16″3/8″41/4″9.10
3″811/16″3/8″41/2″13.18
4″101/16″3/8″51/4″18.63
Fig 602 Union 6,000 PSI CWP
fig 602 unions
Recommended for air, water, oil, gas or mud service to 6,000 PSI NSCWP. This unions 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-tometal seating surfaces. Smaller and lighter than Fig. 600 unions and are recommended for manifold and truck mounting where size and weight are critical.
Size (in.)Length (in.)Nut Radius (in.)Weight (Kg.)Length
Butt. Weld
Sch. 80
TotalCTR. BR.
1″317/32″1/4″25/32″1.59317/32″
11/4″429/32″1/4″37/32″4.54411/16″
11/2″429/32″1/4″37/32″4.10411/16″
2″51/4″1/4″33/4″5.9051/32″
3″61/4″3/8″41/2″10.4557/16″
4″81/4″3/8″57/32″15.0061/16″
Fig 1002 Union 10,000 PSI CWP
fig 1002 unions
Recommended for air, water, oil, gas and mud service to 10,000 PSI NSCWP. This unions 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 unions. These unions are for use on high pressure systems and trucks.
Size (in.)Length (in.)Nut Radius (in.)Weight (Kg.)Length
Butt. Weld
Sch. 80 XX HVY
TotalCTR. BR.
1″317/32″1/4″25/32″1.59317/32″–
11/4″47/8″1/4″37/32″4.54––
11/2″47/8″1/4″37/32″4.10411/16″–
2″51/4″1/4″33/4″6.0051/32″–
21/2″61/8″3/8″41/4″7.9551/8″–
21/2″EUE515/16″3/8″41/4″7.95––
3″61/4″3/8″41/2″10.0053/8″53/8″
4″81/4″3/8″57/32″17.95511/16″–
5″––61/4″25.90515/16″61/8″

5″ size rated at 7,500 PSI CWP and 11,250 PSI test,
5″ unions for sour gas rated at 5,000 PSI CWP and 7,500 PSI test.

Fig 1003 Union 10,000 PSI CWP
fig 1003 unions
Recommended for high pressure manifolding and drilling rig use where alignment of piping components is a problem. Recommended for air, water, oil, gas or mud service to 10,000 PSI NSCWP. This unions 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.
Size (in.)Length (in.)Nut Radius (in.)Weight (Kg.)
TotalCTR. BR.
2”43/4″–31/2″05.64
3″ LP THD91/8″3/8″47/8″20.45
3″ SCH 16087/8″–47/8″21.60
3″ XX HVY91/8″–47/8″22.00
4″ LP THD1015/16″1/2″6″32.95
4″ SCH 1601011/16″–6″34.54
4″ XX HVY1015/16″–6″35.45
5″ SCH 160109/16″–6″33.63
5″ XX HVY1015/16″–6″34.77

5″ size rated at 7,500 PSI CWP and 11,250 test.
5″ unions for sour gas rated at 5,000 PSI CWP and 7,500 PSI test

Fig 1502 Union 15,000 PSI CWP
fig 1502 unions
Recommended for air, water, oil, gas and mud service to 15,000 PSI NSCWP. This unions 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.
Size (in.)Length (in.)Nut Radius (in.)Weight (Kg.)Length
Butt. Weld
XX HVY
TotalCTR. BR.
1″43/8″1/4″23/4″3.82–
2″7″1/4″4″9.5461/4″
3″75/8″3/8″413/16″14.1051/4″
4″81/2″1/2″61/16″34.00–
5″97/64″–645/64″44.40–

Derates to 10,000 PSI WP for sour service

Fig 2202 Union 2,000 PSI CWP
 
fig 2202 unions
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).
 
Size (in.)Length (in.)Nut Radius (in.)Weight (Kg.)
2″73/8″323/32″10.45
3″85/8″65/32″21.80
4″81/2″6″34.50
Fig YH 110 Union 500-6,000 PSI CWP
 
fig YH 100 unions
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 nonconductor gaskets that avoid penetration to flow. seepage and resistant to acids, chemicals and temperatures encountered in normal service. Maximum temperature is 250º F.
Size (in.)CWPTPColor
SubsNut
2″ – 3″500750MaroonMaroon
1″ – 4″1,0001,500MaroonWhite
1/4″ – 4″2,5003,750OrangeOrange
1″ – 3″4,0006,000BrownBrown
1/4″- 1/2″6,0009,000BlueBlue
Fig YH 210 Blanking Union 1,000-6,000 PSI CWP
fig YH 210 unions
Designed for use on manifolds, jumper assemblies and other installations where a blank cap connection is required. This Unioncanbe 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.
 
 
Size (in.)CWPTPColor
SubsNut
2″ – 3″500750MaroonMaroon
1″ – 4″1,0001,500MaroonWhite
1/4″ – 4″2,5003,750OrangeOrange
1″ – 3″4,0006,000BrownBrown
1/4″ – 1/2″6,0009,000BlueBlue
Fig YH 300 Union 1,000-6,000 PSI CWP

fig YH 300 unions

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.
 
Size (in.)CWPTPColor
SubsNut
2″ – 8″500750YellowBlack
1″ – 7″1,0001,500YellowGray
1/4″ – 6″2,5003,750Pearl GrayGreen
1/4″ – 6″4,0006000Pearl GrayRed
1″ – 4″6,0009000Pearl GrayBlue
1″ – 2″10,00015000Pearl GrayOrange
1/4″ – 1″12,50018750SilverSilver
Fig YH 210 Blanking Union
1,000-6,000 PSI CWP
fig YH 210 unions

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 YH 210 unions

 
Size (in.)Connects Nominal Size Oilfield PipeFemale Component Welds ToComplete AssemblyO-Ring Only
3″3-Inch
(3 1/2″ O.D.)		4-Inch8.000.18
4″4-Inch
(4 1/2″ O.D.)		6-Inch10.500.24
6″6-Inch
(6 5/8″ O.D.)		8-Inch14.800.36
8″8-Inch
(8 5/8″ O.D.)		10-Inch20.000.48
10″10-Inch
(10 3/4″ O.D.)		12-Inch24.000.60
12″12-Inch
(12 3/4″ O.D.)		14-Inch27.500.72
13″13-Inch
(13 3/8″ O.D.)		13-Inch
(Casing)		25.500.77
14″14-Inch
(14″ O.D.)		16-Inch24.500.84
16″16-Inch
(16″ O.D.)		18-Inch44.000.96
18″18-Inch
(18″ O.D.)		20-Inch53.001.08
20″20-Inch
(20″ O.D.)		22-Inch67.501.44

Air Seal Union 150 PSI CWP

Air Seal Union

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″.

Suction-Hose Unions

hammer union fittings

Frac Subs/Hose Unions

FRAC SUBS/HOSE UNIONS