HOKE Plug Valves Distributor in India

The difference is that the 7300 is a quarter-turn plug valve for instant on/off shut-off with throttling capability, while the 7400 is a rising stem plug valve for flow regulation with bubble-tight shut-off. The 7300 reaches 3,000 psig and the 7400 reaches 6,000 psig at 70°F.

The pressure and temperature rating depends on the series. The 7300 Series handles 3,000 psig (207 bar) unidirectional and 1,000 psig (69 bar) reverse across -20 to 400°F (-29 to 205°C) with fluoroelastomer seals, while the 7400 Series handles 6,000 psig at 70°F (41.4 MPa at 21°C) across -20 to 250°F (-29 to 121°C).

The body materials available are 316 stainless steel and brass on the 7300 Series, and 316 stainless steel on the 7400 Series. The 7300 plug carries a black fluoropolymer coating on the 316 stainless steel version and a green fluoropolymer coating on the brass version.

Yes, the 7300 Series handles reverse pressure up to 1,000 psig (69 bar) against the 3,000 psig (207 bar) forward rating. Confirm the flow direction at order so we set the handle and arrow correctly for the line.

The downstream vent option relieves downstream pressure to atmosphere through a small hole in the body when the valve closes. The vent drops the maximum operating pressure to 200 psig, and you order it by selecting body option '7' in the part number.

Yes, the 7300 Series throttles between the full open and full closed positions of the 90° travel. The straight-through bore delivers up to 0.74 Cv at the full open position.

The 7400 Series uses a Delrin soft seat that absorbs solid contaminants while still sealing bubble-tight, and the straight-through bore lets you rod the body to clear blockages without removing the valve from the line. The tapered plug and conical seat give needle-valve-style regulation at the same time.