8010 Series Nipples (hydraulic) 3000 psi, connect with 1/2" size 4000, 4200, 5000, 8200, 9200,Series Couplers and are interchangeable with other products complying with ISO 5675 requirements. Parker's 8010 Nipples are available with a ball valve, poppet valve, or pressure relieving (connect under pressure) valve. They are the universal standard male tip of the agricultural industry, commonly referred to as the Pioneer tip.