the double ball air valve offered by us is designed as per is 14845 standard under the strict supervision of the experts. Widely appreciated for its high quality and optimum functioning, the double ball air valve manufactured by us is in great demand in the market.   specifications of double ball air valve size : 40mm to 200mmbody material : cast ironfloat : rubber / stainless steelworking pressure rating : 1.0/1.6 mpa