Anvil International manufactures a full line of hammer unions with threaded or butt-weld connections. Catawissa hammer unions are interchangeable with most manufacturers and adhere to industry standards.
Insulating Union. Laminated rings provide electrical isolation from galvanic corrosion, with a total of 35 million ohms resistance. An O-Ring in male sub and a seal ring in female sub provide primary and secondary seals. All seal rings are field replaceable.
ASTM A29, A105
Hammer unions are fully traceable and available with complete mill certifications.
All Catawissa Oilfield Unions are machined to rigid quality standards ensuring that like components of the same size, figure number and pressure rating are fully interchangeable in the field. Catawissa Oilfield Unions are interchangeable with most leading union manufacturers.
Full Range of End Connections:
Catawissa Oilfield Hammer Unions are available in threaded ends, as well as buttweld and non-pressure seal ends. When you choose Catawissa you receive the utmost in quality, the widest selection and unmatched on-time deliveries.
Anvil also stocks all oilfield products in Scotchkote 134 or Corvel 1660. Anvil coated products are ISO Approved, Nace standards #1 (Corvel 1660), and have 100% traceability.