High Performance Two Offset High Pressure Butterfly Valve With API607 Fire Safe

High Performance Two Offset Design High Pressure Butterfly Valve With API607 Fire Safe

Description

Double offset butterfly valves are also known as high performance butterfly valves. A high performance butterfly valve is suitable for demanding applications involving aggressive media that is not suitable for a valve with rubber liner. TEKO Valves offer the double offset valve with PTFE and PTFE/AISI316 liner and body material in cast steel and stainless steel. A fire safe version designed according to API607 is also available.

Models

Wafer type

Lug type

Double flange

Range

ANSI 150 2”-60”

DIN PN16/25 DN50~1500

Optional

ANSI 300-900LB DIN PN40-PN64

Features

Packing: PTFE packing prevent external leakage out valve neck to full AMSE hydrostatic shell test pressure (150% of C.W.P.).

Disc: 360°uninterrupted spherical edge for sealing. Profile is designed for maximum flow and equal percentage control

Bearing: 316+PTFE wounded bearing on both above and below the disc to align shaft , with high capacity, low wear, and low Friction coefficient.

Soft Seated: Unique designed soft seat encapsulated elastomeric o-ring core for resiliency. PTFE, RPTFE, and UHMWPE material are offered upon fluid.

Retainer Ring: Standard surface finish of 125 to 200 AARH and compatible with both standard gaskets and spiral wound gasket design

About the seat design

Soft seated: Bi-directional seat with encapsulated elastomeric o-ring for resiliency. Common sea materials include PTFE, RPTFE and UHMWPE.

Metal Seated: TEKO metal seat with metal back-up ring to accomplished by the line contact between a spherical surface and conical surface.

Fire safe seat: Double seat design, bi-directional soft sea design for zero-leakage in normal operation and a metal-to-metal seal after fire, meeting or exceeding industry ”fire-safe” requirements.