Products

Rubber Lined Butterfly Valve

Concentric rubber seated butterfly valves.
GZP Concentric rubber seated butterfly valves with a field replaceable seat.

Concentric rubber seated butterfly valves.

GZP Concentric rubber seated butterfly valves with a field replaceable seat.

Features

● Designed acc. to EN 593 / API 609

● Field replaceable seat isolates the body and shaft from media

● Rounded polished disc edge gives full concentric sealing, lower torques and longer seat life

● Top and bottom shaft bearings for decreased torque and increased valve life

● A molded-in O-ring on face of the seat eliminates flange gaskets

Technical Data

Size range:

Lug and wafer DN 50 to DN600 (NPS 2 to 24)

Double flanged DN 600 to 1200 (NPS 24 to 48)

Pressure rating: PN6/PN10/PN16/5K/10K/CL150

Temperature: -20°C to 100°C

Applications: Water supply and drainage, sewage treatment, central air conditioning, heat supply, chemical industry, marine, papermaking, food

Technical data
Design	API609,BS5155,ASME B 16.34,DIN3354,
Face to Face	ASME B16.10,EN 558,DIN 3202
Pressures range	PN6/PN10/PN16/5K/10K/CL150
Size range	DN50(2") ~DN600 (24")
Body Material	Cast iron, Ductile iron, Stainless steel, Al-bronze.
Body Material	NACE MR-01-75/NACE MR-01-03 Special Requirements
Face to Face	ASME B 16.10,EN 558,DIN3202
Fange,Wafer,Lug Ends	ASME B16.5 ≤ DN600 (24") ASME B16.47 A ≥ DN650 (26")
Fange,Wafer,Lug Ends	BS 4504,DIN 2543-2545,EN1092
Temperature range	-20°~ 100°C
Design Feature
Construction	Centric/Center line type
Disc Type	Round Disc
Seat Sealing	soft seat
Valve Operation	Gear,pneumatic,Hydraulic,Electric actuators.
Valve Operation	By passes,locking devices,extended stem,etc
Inspection and Test
Visual Inspection	MSS SP55
Material Inspection	PMI Test----Chemical Analysis
	HB Test---Hardness Test
	UT---Ultrasonic Test
	RT---Radio-graphic Test
	MT---Magnetic Test
	NDT Test Non-destructive
Dimension inspection	According to drawings
Valve Inspection and Test	API 598,DIN 3230,EN 12266,BS 5146

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