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HAMMER UNIONS
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HAMMER UNIONS LARGE SELECTION SPM Hammer Unions are available in a wide range of sizes and in working pressures to 20,000 psi. Pressure seal, non-pressure seal and butt weld styles are offered in various sizes and pressures.
BUILT-IN QUALITY SPM starts with quality steel forgings and ductile iron castings made to exacting specifications for the appropriate pressure ratings. All materials meet ASTM and AISI
standards. Raw materials are machined to precise dimensions and heat treated using the most modern equipment and procedures. Each union is inspected for flawless threads, sure seating and other qualities that mean long, dependable service.
FAST, SURE MAKE-UP All SPM Hammer Unions have threelug nuts and coarse Acme threads for faster make-up and break-out using only a hammer. Wrenches or other tools are not needed.
POSITIVE SEALING All SPM Hammer Unions provide pressure-tight, positive sealing.
Types of seals vary according to pressure and application. For 1,000 to 2,000 psi (low pressure) service, the spherical surface of the male sub and the cone shaped surface of the female provide a metal-to-metal seal. Even when one of these surfaces is not perfectly aligned or slightly pitted, the seal is still leak proof. For some applications in the 2,000 to 4,000 psi (medium pressure) service range, the metal-to-metal seal is supplemented with a resilient seal ring. For 6,000 to 20,000 psi (high pressure) service, a replaceable, liptype seal ring is part of the female sub. This seal ring reduces flow turbulence and protects the metal-tometal seal from corrosion. SPM non-pressure seal hammer unions are designed for abrasive, high-pressure applications where welded connections are not desired.
INTERCHANGEABLE PARTS All SPM Hammer Union assemblies of the same figure number, size and pressure rating are interchangeable with similar assemblies made by other leading manufacturers.
In addition to a line of quality hammer unions, SPM also manufactures many other flow control products. These include the industry's most complete line of piping, manifolds and integral connections at pressure ratings to 20,000 psi. A complete line of butterfly valves and high pressure plug valves, check valves, relief valves and swivel joints are available. Also, SPM manufactures the largest line of well service pumps, in sizes ranging from 250 BHP to 2500 BHP.
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SOUR GAS SERVICE SPM Hammer Unions for sour gas service are specially heat treated for controlled hardness. Fluorocarbon elastomer seals and seal rings are used in all sour gas unions.
Male (Wing) Sub
Wing Nut
All SPM unions for sour gas service are manufactured in accordance to Standard MR-0175 of the National Association of Corrosion Engineers and Standard RP-14E of the American Petroleum Institute. CAUTION: It is possible that standard service parts could be interchanged with sour gas parts. Therefore, users must adopt safety practices for identification, maintenance and use of sour gas equipment.
Pressure seal pipe threads are not recommended for pulsating service above 10,000 psi or where side loading or erosion are suspected. Non-pressure seal type threads or straight i ntegral connections are better under these conditions. In order to achieve the recommended nonshock cold working pressure, power-tight make-up is required on threaded connections. Consult the factory for any usage other than normal constant flow working conditions.
Seal Female (Thread) Sub
PRESSURE SEAL THREAD HAMMER UNIONS
Male (Wing) Sub
HAMMER UNIONS PLUS LOTS MORE
Wing Nut
Unions manufactured by SPM supply the everyday needs of most users. Other union sizes, end configurations and unions for special service requirements are provided on request.
Seal
Female (Thread) Sub
NON-PRESSURE SEAL THREAD HAMMER UNIONS Male (Wing) Sub Ring Segments Retaining Ring Wing Nut Segmented (Detachable) Seal Female (Thread) Sub
BUTT WELD UNION SEGMENTED (Detachable)
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Fig. 100
BLACK NUT YELLOW SUBS
Recommended for air, water, oil or gas ser vice to 1,000 psi NSCWP*. Features a precision machined metal-to-metal sealing surface that assures superior performance in low pressure applications.
Fig. 200
NUT RADIUS
2"
3-5/8"
2-27/32"
5.25
2-1/2"
4-1/8"
3-9/16"
9.00
3"
4-1/8"
4"
14.00
4"
5"
4-3/8"
23.00
6"
6-7/8"
6-3/4"
44.25
8"
7-3/16"
7-5/8"
61.00
SIZE
LENGTH TOTAL
NUT RADIUS
WEIGHT LBS. (APPROX.)
1"
2-21/32"
1-31/32"
1.75
1-1/2"
2-29/32
2-15/32"
2.75
2"
3-1/4"
2-27/32"
5.00
2-1/2"
4-1/8"
3-5/8
10.00
3"
4-17/32"
4"
14.50
4"
4-15/16"
4-3/8"
19.50
LENGTH TOTAL
NUT RADIUS
WEIGHT LBS. (APPROX.)
1"
2-21/32"
1-31/32"
1.75
1-1/2"
2-29/32
2-15/32"
2.75
2"
3-1/4"
2-27/32"
5.00
2-1/2"
4-1/8"
3-5/8"
10.00
3"
4-17/32"
4"
14.50
4"
4-15/16"
4-3/8"
19.50
6"
6-21/32"
6-7/16"
42.50
8"
7-3/16"
7-7/16"
64.00
10"
9-1/8"
9"
91.00
BLUE NUT GRAY SUBS
Features include an O-ring seal in addition to precision machined metal-to-metal seal as found in the Fig. 200 union for service to 2,000 psi NSCWP*.
Fig. 207
LENGTH TOTAL
BLUE NUT GRAY SUBS
Recommended for air, water, oil, gas and mud service to 2,000 psi NSCWP*. Designed for general service manifolds and lines. Features a precision machined metal-to-metal sealing surface that assures superior performance between the male and female subs.
Fig. 206
SIZE
WEIGHT LBS. (APPROX.)
SIZE
BLUE NUT GRAY SUBS
Recommended for air, water, oil, gas and mud service to 2,000 psi NSCWP*. Features an interchangeable Fig. 206 female sub with blanking cap which has an O-ring seal to assure no-leak closure of manifolds and lines. *Non-Shock ColdWorking Pressure Contact factory when weights and dimensions are critical See safety cautions on back
SIZE
LENGTH TOTAL
NUT RADIUS
WEIGHT LBS. (APPROX.)
3"
3-7/8"
2-3/4"
9.80
4"
4-3/8"
3-19/32"
16.25
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Fig. 400
BLACK NUT RED SUBS
Recommended for air, water, oil, gas and mud service. Features a precision ball and cone sealing surface for dependable metal-tometal pressure seal. Sizes 4" and larger have a replaceable O-ring seal.
Fig. 402
5-1/8
1/4"
3-1/2"
10.50
3"
4000
5-7/8
3/8"
4-1/4"
19.00
4"
4000
8-7/32
3/8"
4-5/8"
29.25
SIZE
LENGTH TOTAL
CTR. BORE
NUT RADIUS
WEIGHT LBS. (APPROX.)
2"
5-1/4"
1/4"
3-1/2"
10
SIZE
LENGTH TOTAL
CTR. BORE
NUT RADIUS
WEIGHT LBS. (APPROX.)
1"
3-17/32"
1/4"
2-3/8"
3.00
1-1/2"
4-7/8"
1/4"
3"
9.00
2"
5-1/4"
1/4"
3-1/2"
12.00
3"
6-1/4"
3/8"
4-1/4"
21.00
4"
8-1/4"
3/8"
5"
33.00
RED NUT BLUE SUBS
Recommended for air, water, oil, gas and mud service to 10,000 psi NSCWP*. For use on high pressure systems and trucks. Features replaceable, resilient lip-type seal which protects the metal-to-metal ball and cone seal against abrasion and corrosion as well as minimizes fluid flow.
Fig. 1502
4000
BLACK NUT ORANGE SUBS
Recommended for air, water, oil, gas and mud service to 6,000 psi NSCWP*. For manifold, truck and skid-mounting where size and weight are critical. Features include a replaceable lip-type seal ring which minimizes fluid flow turbulence and gives a pressure seal for protection of metal-to-metal sealing surfaces.
Fig. 1002
2"
BLACK NUT BLACK SUBS
Recommended for air, water, oil, gas and mud service to 4,000 psi NSCWP*. Features a resilient lip-type seal in addition to precision metal-to-metal seal as found in Fig. 400 union.
Fig. 602
SIZE
SIZE
LENGTH TOTAL
CTR. BORE
NUT RADIUS
WEIGHT LBS. (APPROX.)
1"
3-17/32"
1/4"
2-1/8"
3.00
1-1/2"
4-7/8"
1/4"
3"
9.00
2"
5-1/4"
1/4"
3-5/8"
12.00
3"
6-1/4"
3/8"
4-1/2"
22.00
4"
8-1/4"
3/8"
5"
30.00
SIZE
LENGTH TOTAL
CTR. BORE
NUT RADIUS
WEIGHT LBS. (APPROX.)
1"
4-11/16"
1/4"
2-3/4"
8.20
1-1/2"
4-1/2"
1/4"
3-1/2"
16.30
2"
7"
1/4"
4"
21.00
3"
7-5/8"
3/8"
4-7/16"
32.00
BLUE NUT RED SUBS
Recommended for air, water, oil, gas and mud service 15,000 psi NSCWP*. For manifold and truck mounting or other installations where extreme high pressure is encountered. Features a resilient lip-type seal ring which provides initial seal and protects the metalto-metal sealing surfaces. Other specialized figures and styles available. Please contact factory. *Non-Shock ColdWorking Pressure Contact factory when weights and dimensions are critical
WEIGHT NUT LBS. LENGTH CTR. NSCWP* TOTAL BORE RADIUS (APPROX.)
PAGE 6 OF 6 SAFETY GUIDE FOR HAMMER UNIONS AND UNION END PRODUCTS !!WARNING!! MISUSE, SIDE LOADING, IMPROPER MAINTENANCE, OR DISASSEMBLY UNDER PRESSURE CAN CAUSE SERIOUS INJURY OR DEATH! The following information is given in good faith and should aid in the safe use of your SPM products. This information is not meant to replace existing Company's safety policies or practices. It is important to read and understand the "General Safety Data for all SPM Products". Personal Responsibilities: A-1 When using unions, safety glasses, approved safety shoes and hard hats must be worn. Hammering on unions may cause foreign material or steel slags to become airborne. Hammering on unions may also cause sparks. Use only soft-type hammers. Steel headed hammers should be avoided. A-2 Personnel should only hammer on makeup lugs and not strike union nut. Fractures can occur from repeated misuse. Excessive hammering on nut can damage hammer unions. A-3 Personnel should never hammer on unions or treating pipe when pressure is present. Personnel should never be around unions or lines when pressure is applied. A-4 It is a personal responsibility to use the proper tools when working with hammer unions or treating pipe. Individuals should be knowledgeable and trained in the use of these tools.
weld unions and connections may be welded, and only then in accordance with specific approved processes. If lifting eyes are to be attached, they must be clamped on. C-2 Any union that is received from SPM attached to treating pipe or other product must be shipped back to SPM for removal if re-use is desired. C-3 Re-threading of SPM pipe joints or other threaded vessels must be done at SPM. Proper threading and torque make up of unions are essential. Only API or SPM approved power torque make up of unions is acceptable. C-4 Any SPM union that is assembled to a crossover sub or other threaded connection will be limited to the working pressure of the lowest rated member. C-5 All SPM threaded components are right hand threaded unless specifically designated otherwise. Any turning counterclockwise will unscrew the components. Always make sure any threaded component is made up properly with the correct power torque make-up before pressure is applied. Contact SPM for recommendations. C-6 Once a product has been placed in a designated service, it should remain in that service application. C-7 All products should be properly cleaned, greased or oiled after each use and inspected prior to each use. C-8 Pressure seal (line pipe) threads are not recommended for pulsating service above 10,000 psi or where side loading or erosion is suspected. Non-pressure seal (round tubing) threads or straight integral connections are recommended under these conditions. In order to achieve the recommended Non-Shock Cold Working Pressure, power-tight make-up is required on threaded connections. Consult the factory for any usage other than normal constant flow working conditions.
A-5 It is a personal responsibility to visually inspect each union prior to each use for damage, unusual or excessive wear, excessive hammering, cracks, wash or erosion, corrosion or etching, thread or seal damage or other abnormalities. Any questionable component should be removed from service and submitted to a thorough inspection.
C-9 Each integral union connection is clearly marked with a pressure code (i.e. "1502", 15,000 psi). This pressure must not be exceeded. This code should also be used with mating unions. Improper mating can result in failures. All integral union connections used must match (according to size, pressure rating, etc.). These connections must also match the service of the designated string they are installed in.
On Location:
C-10 I.D. threads between the pressure seal (line pipe) and non-pressure seal (round tubing) are different. Do not attempt to mismatch these types. Failure will occur.
B-1 Each union has a size and pressure code designated on the wing nut. Use this code for proper mating and pressure limits.
Inspection-Repair-Testing: !! CAUTION !! SINCE UNIONS MAY BE REPAINTED IN DIFFERENT COLORS FOR VARIOUS APPLICATIONS, DO NOT USE FACTORY COLOR AS PRIMARY MEANS OF IDENTIFICATION. B-2 Unions should be properly cleaned and lightly oiled before using. Union seals should be visually examined prior to makeup and replaced if worn, torn, or cracked. B-3 Unions and treating pipe will stand some minor misalignment. However, placing piping where side loads are present is extremely dangerous and must be avoided. B-4 Treating pipe should not be used to vent gaseous fluids or gas to the atmosphere. Line whip can occur, causing serious injury or death. B-5 Any union or treating pipe section that has been pressurized beyond its specified working pressure must be replaced. B-6 Do not hammer on, or be around union assemblies when pressure is present. B-7 It is recommended that a rate in excess of 42 feet per second be avoided. Rates above this will cause a more rapid wear and erosion. Special Precautions: C-1 Welding, brazing or heating unions or treating pipe is prohibited. Only butt
D-1 Unions should be visually inspected each time they are used. Any severe dents in the wing nut or union half caused by misdirected hammer blows should be ultrasonic checked or replaced before use. Rolled or worn threads are unsafe and should be replaced. Unions with damaged or worn ears or lugs should be replaced. D-2 Unions showing signs of internal washing, corrosion, acid pitting or rust should be replaced. D-3 Strings, treating lines and equipment should have an ultrasonic check at lease twice a year. For any wall loss in the tube section above 10%, the tube should be replaced. See Engineering Data available from SPM on application and uses of treating lines where clarification is needed. D-4 SPM also recommends that routine hydrostatic tests be performed on the hammer unions and treating pipe. Pressure testing should be done with cold water. Personnel should wear proper safety equipment and avoid any area of danger while pressure is present. Prior to any pressure testing, all air must be evacuated from the system. Failure to do so could result in PERSONAL INJURY OR DEATH! D-5 Weld repair is prohibited for unions. !! CAUTION !! THE RATEDWORKING PRESSURE IS NOT TO BE EXCEEDED DURING FIELD SERVICE OR FIELDTESTING.
NQA ISO 9002 CERTIFIED (ABERDEEN)
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