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Hammer Union

Hammer Union

Hammer Union
hammer union 1
hammer union 2
hammer union 3
hammer union 4
hammer union 5
hammer union 6
hammer union 7
hammer union 8
hammer union 10
Hammer Union
hammer union 1
hammer union 2
hammer union 3
hammer union 4
hammer union 5
hammer union 6
hammer union 7
hammer union 8
hammer union 10

Hammer union is used to connect kinds of manifold and lines. It can be divided into three types: threaded connection hammer union, welded hammer union, anti-hydrogen sulfide hammer union. 

As a kind of oilfield drilling equipment, its size can be from 1 inch to 4 inch, cold working pressure from 7Mpa to 140Mpa(1000psi-20000psi).


  • Models of threaded connection hammer unions: fig 100, fig 200, fig 206, fig 207, fig 211,fig 400, ig 600, , fig 602, fig1002,fig1003, fig 1502,fig1502,fig2002,fig2202.



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The Specification of Hammer Union China

Our hammer unions are exchangeable with FMC, WECO and Kemper hammer union.


ModelWorking PressureFeaturesRecommended service
Fig 100 Hammer Union1,000 psi(69 bar)Pressure-tight make-up with hammerManifold and line connections
Economical,low-pressure union
Fig 200 Hammer Union2,000 psi(138 bar)Economical,general-purpose unionGeneral-service manifolds and lines
1-to 4-inch sizes
Butt-weld available
Fig 206 Hammer Union2,000 psi(138 bar)O-ring in male sub improves sealing and protects metal-to-metal seal against corrosionManifold and line connections,suction service,and corrosion service
Replaceable O-ring extends union
u 1-to 10-inch sizes

Fig 207 Hammer Union2,000 psi(138 bar)Parts are interchangeable with Figs.200 and 206To seal manifold connections and protect union threads
O-ring on blanking cap ensures a leak-free seal
Raised lugs on cap allow for make-up with a hammer
Cap can be tapped for pressure gauge if specified
Available in butt-weld

Fig 211 Hammer Union2,000 psi(138 bar)Laminated insulating rings eliminate all metal-to-metal contact;insulating ringsFor production systems with electrolytic corrosion problems
Provide 35 million ohms resistance across the union
O-ring in male sub provides a positive primary seal
Seal ring in female sub provides a positive secondary seal
Insulating rings,O-ring,and seal ring can be replaced to extend union life

Fig 400 Hammer Union4,000psi(276 bar)through 4-inch sizes;21/2-through 12-inch sizes have O-rings for primary sealManifold and line connections,pump suction,and mud service
2,500psi(172 bar)through 5 to 12-inch sizesButt-weld available

Available for sour gas service:2,500 psi suction,(172 bar)cold working pressure, 5-through 12-inch sizes;4,000psi (276 bar) coldworking pressure, 1-through 4-inch sizes


Fig 600 Hammer Union6,000psi(414 bar)Bronze seat provides primary seal;will not rust in water servicesSteam service,boiler connections, manifold,and line connections for production,drilling,and well servicing
Fig 602 Hammer Union6,000psi(414 bar)CompactManifold and line connections and mud service
Replaceable,lip-type seal provides primary seal,protects secondary metal-to-metal seal,and minimizes flow turbulence
Butt-weld available
Available for sour gas service:6,000 psi (414 bar)cold working pressure

Fig 1002 Hammer Union10,000psi(690 bar)through 4-inch sizes; 7,500 psi(517bar),5-and 6-inch sizesReplaceable,lip-type seal provides primary seal,protects secondary metal-to-metal,and minimizes flow turbulenceCementing,fracturing,acidizing,testing, and choke-and-kill lines
Butt-weld available
Available for sour gas service:7,500 psi (517 bar)cold working pressure
5-and 6-inch sizes have O-rings for primary seals

Fig 1003 Hammer UnionMisaligning unionBall seat provides positive seal with up to 71/2misalignment;2-inch model up to 4°For high-pressure connections where lines cannot be aligned
10,000 psi(690 bar)2-and 3-inch sizes;Replacement O-ring on male sub provides primary seal,and protects metal-to-metal seal against abrasion and corrosion
7,500psi(517 bar),4and5 inch sizesHammer union connection:available with threaded or butt-weld ends


Fig 1502 Hammer Union15,000 psi(1034 bar)Replaceable,lip-type seal provides primary seal,protects secondary metal-to-metal seal,and minimizes flow turbulenceCementing,fracturing,acidizing,testing, and choke-and-kill lines
Butt-weld available
Available for sour gas service:10,000 psi (690 bar)cold working pressure;butt- weld or non pressure-thread seal  configurations only

Fig 2002 Hammer Union20,000 psi(1380 bar)Replaceable,lip-type seal provides primary seal,protects secondary metal-to-metal seal,and minimizes flow turbulenceCementing,fracturing,acidizing,testing, and choke-and-kill lines
2 and 3-inch line sizes
Butt-weld configurations only

Fig 2202 Hammer Union15,000 psi(1034 bar)Meets National Association of Corrosion Engineers Standard MR-01-75 and American Petroleum Institute RP-14EEspecially designed for sour gas service
Heat-treated components are 100% tested for hardness
Fluoroelastomer seal rings
Butt-weld only
Stamped"sour gas"using low-stress dot stamping and painted with a green zinc-chromate primer to assure quick identification


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