Brass or Nickel Plated Brass body options with a 316 stainless steel ball and 302 stainless steel spring. End options available are 1/4 Female NPT, 1/4 Male NPT, 3/8 Female NPT and 3/8 Male NPT. Seal options include Buna-N, EPDM and Viton®. Maximum operating pressure is 3000 psi.