HAMMER UNIONS

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HAMMER UNIONS

Windlass offers a comprehensive range of standard and sour gas Hammer Unions. Each union is thoroughly inspected to ensure long,
dependable service in the most extreme conditions. Available in stock at our distribution center in Houston & Dubai.

Three lug nuts and self-locking ACME threads provide quick make-up and break-out
Three lug nuts and self-locking ACME threads provide quick make-up and break-out
Color coded for quick identification
Unique identification for sour gas unions
Meet or exceed National Association of Corrosion Engineers standard NACE MR-01-75 and API RP-14E
Manufactured from quality steel meeting ASTM and/or AISI standards
All unions provide pressure-tight & positive sealing for low-pressure services (500 to 2,000 PSI)
The spherical surface male sub and angular surface female sub form a metal-to-metal seal, the ball and tangent provides a perfect seal
Range from 1/2” to 12” with cold working pressures from 500 to 20,000 PSI
Fully interchangeable with most major brands of Hammer Unions

Specifications For Threaded and Butt Weld Hammer Unions

* Indicates different Cold Working Pressure due to other design factor – Difference as shown below:
5”, 6”, 12”: Figure 400, Cold Working Pressure 2,500 PSI & Test Pressure 4,000 PSI
5”, 6” : Figure 1002 Butt weld, Cold Working Pressure 7,500 PSI & TestPressure 11,250 PSI Std. Service
4”, 5” : Figure 1003 Butt weld, Cold Working Pressure 7,500 PSI & TestPressure 11,250 PSI Std. Service
5”, 6” : Figure 1002 Butt weld, Cold Working Pressure 5,000 PSI & TestPressure 7,500 PSI Sour Service
4”, 5” : Figure 1003 Butt weld, Cold Working Pressure 5,000 PSI & TestPressure 7,500 PSI Sour Service
1/2” : Figure 300, Cold Working Pressure 15,000 PSI & Test Pressure 20,000 PSI, Zinc Plated

Fig. 50 Union

These Hammer Unions are recommended for suction and low pressure lines
Available in threaded and socket weld ends

Specifications

SizeNut RadiusLength TotalPressure (PSI) RatingWeight (LBS)
Standard ServiceSour Gas Service
InchesInchesInchesCold WorkingTestCold WorkingTest(Approx.)
45.136.20500750N/AN/A27.00
55.225.60500750N/AN/A22.40

Fig. 100 Union

These Hammer Unions are used in low pressure manifold lines and air, water, oil or gas applications
Available in both threaded and butt weld ends
Metal to metal sealing surface

Specifications

SizeNut RadiusLength TotalPressure (PSI)RatingWeight (LBS)
StandardServiceSour GasService
InchesInchesInchesCold WorkingTestCold WorkingTest(Approx.)
22.903.231,0001,500N/AN/A5.63
2-1/23.604.251,0001,500N/AN/A11.47
34.004.591,0001,500N/AN/A13.80
44.704.941,0001,500N/AN/A19.42
55.806.001,0001,500N/AN/A32.50
66.506.841,0001,500N/AN/A46.21
87.877.311,0001,500N/AN/A69.88

Fig. 200 Union

These Hammer Unions are used in general service manifold lines and air, water, oil or gas applications
Available in both threaded and butt weld ends
Metal to metal sealing surface

Specifications

SizeNut RadiusLength TotalPressure (PSI)RatingWeight (LBS)
StandardServiceSour GasService
InchesInchesInchesCold WorkingTestCold WorkingTest(Approx.)
11.962.652,0003,0002,0003,0001,75
1-1/42.172.782,0003,0002,0003,0002.37
1-1/22.412,982,0003,0002,0003,0003.29
22.903.172,0003,0002,0003,0005.47
2-1/23.634.132,0003,0002,0003,00010.00
34,264,582,0003,0002,0003,00015.03
45.004.942,0003,0002,0003,00020.95
55.506.552,0003,0002,0003,00033.26
66.436.662,0003,0002,0003,00042.50
87,437.192,0003,0002,0003,00064.00
109.009.132,0003,0002,0003,00091.00

Fig. 206 Union

These Hammer Unions are similar to Fig 200 with a secondary seal to supplement the metal-to-metal design
Recommended for use in corrosive environments
Available in both threaded and butt weld ends

Specifications

SizeNut RadiusLength TotalPressure (PSI)RatingWeight (LBS)
StandardServiceSour GasService
InchesInchesInchesCold WorkingTestCold WorkingTest(Approx.)
11.962.652,0003,0002,0003,0001.75
1-1/42.172,782,0003,0002,0003,0002.37
1-1/22.412.982,0003,0002,0003,0003.29
22.903.172,0003,0002,0003,0005.47
2-1/23.634.132,0003,0002,0003,00010.00
34.264.582,0003,0002,0003,00015.03
45.004.942,0003,0002,0003,00020.95
55.506.552,0003,0002,0003,00033.26
66.436.662,0003,0002,0003,00042.50
87.437.192,0003,0002,0003,00064.00
109.009.132,0003,0002,0003,00091.00

Fig. 207 Union

Fig 207 Hammer Unions are fully interchangeable with figure 200 and 206 unions
Used to blank off the end of a line
O-ring is provided in blanking cap to ensure leak proof seal
Available in both threaded and buttweld ends

Specifications

SizeNut RadiusLength TotalPressure (PSI)RatingWeight (LBS)
StandardServiceSour GasService
InchesInchesInchesCold WorkingTestCold WorkingTest(Approx.)
32.753.872,0003,0002,0003,0009.80
43.594.382,0003,0002,0003,00016.25
54.254.912,0003,0002,0003,00028.30
64.925.602,0003,0002,0003,00045.88

Fig. 300 Union

These Hammer Unions have a flat face design which permits straight breakout for lateral removal of valves and other fittings for inspection or replacemen
Available in threaded ends

Specifications

SizeNut RadiusLength TotalPressure (PSI)RatingWeight (LBS)
StandardServiceSour GasService
InchesInchesInchesCold WorkingTestCold WorkingTest(Approx.)
1/21.803.0015,00020,000N/AN/A1.80
12,132,632,0003,000N/AN/A2,00
22.883.752,0003,000N/AN/A2.50

Fig. 400 Union

These Hammer Unions are used in manifold & line connections, pump suction and mud services
Available in both threaded and butt weld ends
3" through 12" sizes have o-ring for primary seal

Specifications

SizeNut RadiusLength TotalPressure (PSI)RatingWeight (LBS)
StandardServiceSour GasService
InchesInchesInchesCold WorkingTestCold WorkingTest(Approx.)
23.545.134,0006,0004,0006,00012.46
34.176.144,0006,0004,0006,00020.13
45.048.184,0006,0004,0006,00031.24
56.7011.102,5004,0002,5004,00049.60
67.7011.402,5004,0002,5004,00063.47
1210.2610.902,5004,0002,5004,000164.90

Fig. 602 Union

These Hammer Unions are used in water, oil, gas and mud service
Replaceable, lip type rubber seal provides primary sealing
Available in both threaded and butt weld ends

Specifications

SizeNut RadiusLength TotalPressure (PSI)RatingWeight (LBS)
StandardServiceSour GasService
InchesInchesInchesCold WorkingTestCold WorkingTest(Approx.)
12,193.536,0009,0006,0009,0003.50
1-1/43.084.806,0009,0006,0009,0009.01
1-1/23.104.906,0009,0006,0009,0009.17
23,705.306,0009,0006,0009,00013.78
34.506.206,0009,0006,0009,00022.76
45.198.186,0009,0006,0009,00034.96

Fig. 1002 Union

These Hammer Unions are used in high pressure applications for choke and kill lines, cementing and acidizing. Replaceable, lip type rubber seal provides primary sealing up to 4"
5" and 6" sizes have o-ring for primary sealing
Available in both threaded and butt weld ends
6" unions are only available in butt weld for sour service

Specifications

SizeNut RadiusLength TotalPressure (PSI)RatingWeight (LBS)
StandardServiceSour GasService
InchesInchesInchesCold WorkingTestCold WorkingTest(Approx.)
12.193.5510,00015,0007,50011,2503.50
1-1/43.084.8810,00015,0007,50011,2509.01
1-1/23.104.9010,00015,0007,50011,2509.17
23.705.3010,00015,0007,50011,25013.78
34.506.2010,00015,0007,50011,25022.53
45.208.2010,00015,0007,50011,25034.91
56.269.137,50011,2505,0007,50066.57
67.007.607,50011,2505,0007,50092.15

Fig. 1003 Union

These Hammer Unions are used in air, water, oil, mud, gas service, high pressure manifold, drilling rig where alignment of piping components is a problem
Replaceable o-ring on male sub provides primary sealing
Available in both threaded and butt weld ends
5" unions are available in butt weld ends only

Specifications

SizeNut RadiusLength TotalPressure (PSI)RatingWeight (LBS)
StandardServiceSour GasService
InchesInchesInchesCold WorkingTestCold WorkingTest(Approx.)
34.808.8710,00015,0007,50011,25047.50
46.0010.907,50011,2505,0007,50078.15
56.0010.907,50011,2505,0007,50079.62

Fig. 1004 Union

Available in threaded & butt weld ends
Face of male & female subs is perfectly square
Provided with lip type seal ring

Specifications

SizeNut RadiusLength TotalPressureRating (PSI)Weight (LBS)
StandardServiceSour GasService
InchesInchesInchesCold WorkingTestCold WorkingTest(Approx.)
56.008.2510,00015,0007,50011,25085.00
67,259.3810,00015,0007,50011,250140.00

Fig. 1502 Union

These Hammer Unions are used in cementing, acidizing, choke and kill lines
Replaceable lip type rubber seal
Available in both threaded and butt weld ends

Specifications

SizeNut RadiusLength TotalPressure (PSI)RatingWeight (LBS)
StandardServiceSour GasService
InchesInchesInchesCold WorkingTestCold WorkingTest(Approx.)
12,764.3815,00022,50010,00015,0009.12
1-1/23.504.5015,00022,50010,00015,00016.30
24.007.0015,00022,50010,00015,00020.11
34.887.6415,00022,50010,00015,00034.10
46.028.5715,00022,50010,00015,00072.68
56.539.0015,00022,50010,00015,00095.00
67.209.7515,00022,50010,00015,000145.00

Fig. 2002 Union

Replaceable lip type rubber seal
Available in butt weld ends only
Windlass 3" Hammer Unions are sometimes referred to as 2-1/2" respectively by other manufacturers.

Specifications

SizeNut RadiusLength TotalPressure (PSI)RatingWeight (LBS)
StandardServiceSour GasService
InchesInchesInchesCold WorkingTestCold WorkingTest(Approx.)
22.754.6720,00030,000N/AN/A8.20
33.504.5020,00030,000N/AN/A16,30

Fig. 2202 Union

These Hammer Unions are specially designed for sour gas service
Replaceable lip type rubber seal with stainless steel anti extrusion ring
Conform to NACE standard MR-01-75 and API RP-14E
Available in butt weld ends only
Windlass 3" & 4" Hammer Unions are sometimes referred to as 2-1/2" and 3" respectively by other manufacturers.

Specifications

SizeNut RadiusLength TotalPressure (PSI)RatingWeight (LBS)
StandardServiceSour GasService
InchesInchesInchesCold WorkingTestCold WorkingTest(Approx.)
22,754.69N/AN/A15,00022,5008.20
33.504.50N/AN/A15,00022,50016.40
44.007.00N/AN/A15,00022,50021.50

Fig. 6666 Union

Available in threaded ends only

Specifications

SizeNut RadiusLength TotalPressure (PSI)RatingWeight (LBS)
StandardServiceSour GasService
InchesInchesInchesCold WorkingTestCold WorkingTest(Approx.)
1-1/22.834.196,0009,000N/AN/A6.6
23.465.856,0009,000N/AN/A12.58

G-Type 10,000 PSI Union

Available in threaded ends only

Specifications

SizeNut RadiusLength TotalPressure (PSI)RatingWeight (LBS)
StandardServiceSour GasService
InchesInchesInchesCold WorkingTestCold WorkingTest(Approx.)
1-1/234.1410,00015,000N/AN/A8.25

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