Keystone pneumatic butterfly valve GRWT119PN10 F89U-009DA+LP Keystone pneumatic butterfly valve F990 DLT300 I0S0S0N0M8K Keystone Valves & Co ntrols Inc.
GRWDN400 butterfly valve FIG 15-730 EN-GJL-250. Soft EPDM. Split valve body
F89U-051DA+DLT100M20+791+MENDO
GRW DLT300 D0S0S2E0M1K, butterfly valve GRW DLT300 D0S0S2E0M1K
F89U-051DA+DLT100M20+791 butterfly valve
Keystone pneumatic butterfly valve actuator DN200 GRWT119 PN10+F89U-032DA+LP-0B201BN00-00-0R1
Keystone pneumatic butterfly valve actuator DN125 GRWT119 PN10+F89U-009DA+LP-0B201BN00-00-0R1
Keystone manual turbine butterfly valve GRL0400D2A1S2NA1KG1 GRL0400D3A1S2NA1KG1 keystone pneumatic control valve GRW DLT300 D0S0S2E0M1K+F89U-051DA+YT1000+B49G
Features and benefits
·Wafer and lug type valve body design, structural length and dimension comply with EN 558 20 series and API 609.
·The design standard complies with EN 593 and API 609.
·The valve seat can be replaced and can completely isolate the valve body and valve stem from the overflow medium.
·The sealing force of the stage valve stem exceeds the rated pressure of the valve, which can effectively prevent the overflow medium from leaking to the external environment through the valve stem.
·The second stage valve stem seal can be used as a backup seal to ensure more safety and reliability.
·The molded O-ring on both ends of the valve seat can replace the gasket as the flange seal.
·The valve stem seal ring can prevent water vapor from penetrating into the valve stem area.
·The double valve stems enable the thin valve plate design to play its low flow resistance characteristics (up to DN 300).
·The round polished valve plate edge ensures that the valve can achieve complete concentric sealing, lower torque, longer valve seat life and bubble level sealing.
·The valve body locating hole is convenient for installation and suitable for centering between flanges.
·The extended valve body neck realizes pipe insulation.
·The upper and lower valve stem bearings provide good support, and the minimal friction ensures the low torque of the valve.
·The top bushing can absorb the axial thrust load on the actuator side.
·All valves comply with "Pressure Equipment Directive" (97/23/EU) B1+D, CE mark.
Certified: NSF/ASME Std 61, ACS, KIWA, WRAS, DVGW-G, ABS, CU-TR。
