Specs

Certifications

SIL capable, PED, DVWG, CUTR, CRN, ABS

Application

Cooling Towers, Air Circulation, Cooling Water , Facilities & Process Utilities, Desalination

Body Design

Short Pattern

Material

Duplex, Epdm Rubber, Ductile Iron, Carbon Steel, Buna-N, Aluminum Bronze, 316L Stainless Steel, 316 Stainless Steel, 304 Stainless Steel, Super Duplex

Operating Temperature

Less than 150 C

Pressure Class

ASME, PN

Process Connection Type

150FF, 150RF

Seat/Seal Type

Resilient

Shutoff Class

Zero Leakage

Standards

API 609, ASME B16.34

Valve Size

NPS 36, NPS 24 / DN 600, NPS 40, NPS 30, NPS 42, NPS 60, NPS 56, NPS 48, NPS 44

Valve Size Standard

NPS, DN

Valve Type

Butterfly

Media

Water Glycol, Water, Liquid, Air, Inert Gas, Air

Features

Double flanged body design with face-to-face dimensions, according to EN 558 Series 20, API 609 and AWWA C504 short.
Designed according to EN 593 and API 609.
The seat is field replaceable and fully isolates the body and shaft from the flow.
Primary shaft sealing exceeds the pressure rating of the valve and prevents leakage through shaft area to atmosphere.
A secondary shaft sealing provides back-up safety.
A molded-in O-ring in the seat for flange sealing eliminates the need for gaskets.
Shaft seals prevent moisture penetrating into the shaft area.
Rounded polished disc edge gives full concentric sealing, lower torques, longer seat life and drop-tight shut-off.
Extended body neck allows for pipe insulation.
Actuator flange according to ISO 5211.
Top and bottom shaft bearings for optimized support and minimum friction and decreased torque.
Top bushing absorbs actuator side thrust loads.

Keystone Series GRF (ISO) Butterfly Valves

Specs

Resources

Features