Use Spring Adapters when safety requirements preclude the use of rigid air terminals. Stainless steel spring is 3.5" (89 mm) long. Ends are fabricated from 3/4" (19 mm) round aluminum or brass rod stock. Top end is threaded female and has a 12" (30.5 cm) stainless steel safety cable. Bottom end is threaded male.
When ordering air terminals for use with spring adapters, keep in mind that air terminal length should not exceed 18 (45.7 cm) inches. Spring adapters are not recommended for use with 5/8" diameter copper air terminals.
For male to female or female to female connections. Cast bronze or aluminum with stainless steel fasteners. Available with 3/8" (9.5 mm), 1/2" (12.7 mm) or 5/8" (15.9 mm) threads, in combinations to meet your requirements. Female to female 3" x 3/4" (76 mm x 19 mm). Female to male 4" x 3/4" (102 mm x 19 mm).
Note: Cast Swivel Couplings are also available tinned.