Actuators and Vavles

Model Number

HF-T/HF-M Series

High-Performance With PTFE/METAL Seat Valves
Advantages of HANIL High Perfomance Butterfly Valves Zero Leak Bi-Directionally Long Operating Life Cycle Operating Pressure to 50kgf/cm2 Temperature to +240°C PTFE Seat High Temperature to +450°C -METAL Seat
Double Eccentric Mechanism This allows friction-free contact between the body and the seat. Since the rotation axis(stem) of the valve disc is shifted from the center by a distance of the width of A and B, a cam effect is produced which prevents wearing of the seal surface, lessens seating torque and offers longer service life and easy operation.

PTFE Seat Design

Line pressure compresses the flexible seat against the disc, and positive shut-off is assured. The body and retainer rigidly hold the seat in position and shield it from flow, protecting in against abrasion and erosion.

Fire Safe Design

Fire safe butterfly valves are available or applications throughout the petroleum industry, the marine industry, and for processing plants in other industries where flammable or other hazardous fluids are being handled

In the event fire guts a piping system where these valves are located with resulting destruction of their polymeric seat, effective shut-off of flow of the hazardous fluid in the pipeline is accomplished by a secondary metal seat in the valve.

Metal Seat Design

The useful range of high-performance HANIL butterfly valves van be extended to more severe applications when equipped with a metal seat. Maximum temperature range for metal seated butterfly valves is +450°C compared with +230°C for the standard polymeric seat. The metal seat also makes the valves well-suited for handling semisolids where abrasive materials are apt to cause damage to the polymeric seat. Pressure ratings of these valves extend to 20kgf/cm²

The metal seat in these butterfly valves functions in the same manner as the standard polymeric seat. The flexiblelip seat is pressure-energized by the media to ensure sealing at higher pressures. The valve body and insert that retain the seat in position protect the seat from fluid impingement.

While these metal-seated butterfly vavles do not provide the leak-tight shut-off capability of polymeric seated valves, leakage rates are unusually low throughout the valve's full temperature pressure/range.

Part nmae and materials

The HF-T/HF-M is designed to confrom to the following standards where applicable :

• ANSI B16.5 - Steel pipe flanges and flange fittings
• ANSI B16.34 - Steel valves
• ANSI B31.1 - Power piping
• ANSI B31.3 - Chemical plant and petroleum refinery piping
• MSS-SP-6 - Standard finishes for pipe flanges
• MSS-SP-25 - Standard marking system for valves
• MSS-SP-55 - Quality standard for steel chastings
• MSS-SP-61 - Pressure testing of steel valves
• MSS-SP-67 - Butterfly valves
• API-598 - Valve inspection and test
• API-609 - Butterfly valves
• DIN 3230 - Technical conditions of delivery for valves
• ISO5752 - Metal valves for use in flanged pipe systems
• ISO2084 - Pipeline flanges for general use
• BS4504 - Flanges and bolting for pipes, valves and fittings
• JIS2215 - Basic dimensions for steel pipe flanges

Pressure-Temperature ratings