Specs

Certifications

ABS, PED, DVWG, CUTR, CRN

End Connection

Wafer, Lugged

Application

Cruise Ship, Cooling Water , Compressors , Air Circulation, Facilities & Process Utilities

Material

Super Duplex, 316 Stainless Steel, Aluminum Bronze, Buna-N, Ductile Iron, Duplex, Epdm Rubber, Nylon

Operating Temperature

Less than 150 C

Pressure Class

PN, ASME

Process Connection Type

PN16, 150RF

Seat/Seal Type

Resilient

Shutoff Class

Zero Leakage

Standards

ASME B16.34, API 609

Valve Size

5 inch, NPS 10 / DN 250, NPS 12 / DN 300, NPS 14 / DN 350, NPS 18 / DN 450, NPS 2 / DN 50, NPS 20 / DN 500, NPS 2-1/2 / DN 65, NPS 24 / DN 600, NPS 3 / DN 80, NPS 30, NPS 36, NPS 4 / DN 100, NPS 6 / DN 150, NPS 8 / DN 200, NPS 16 / DN 400

Valve Size Standard

NPS, DN

Valve Type

Butterfly

Media

Water Glycol, Water, Liquid, Air

Stem

O-ring

Features

Wafer and lugged body design with face-to-face dimension, according to EN 558 Series 20 and API 609.
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.
The two piece shaft allows for a thin disc and provides minimal obstruction to flow (up to DN 300).
Rounded polished disc edge gives full concentric sealing, lower torques, longer seat life and drop-tight shut-off.
Body locating holes allow ease of installation and centering between the flanges.
Extended body neck allows for pipe insulation.
Actuator flange according to ISO 5211.

Keystone Series GRW/GRL Butterfly Valves (ISO)

Specs

Resources

Features