Origin	China
Model Number	D71X-10
Brand Name	YUGAO
Material	Casting
Media	Gas
Power	Manual
Pressure	Medium Pressure
Standard or Nonstandard	Standard
Structure	Butterfly
Temperature of Media	Medium Temperature

Butterfly valve is mainly consisted of body, stem, disc, seat and driver (lever, gearbox, pneumatic and electric actuator) and so on. On-off and controlling flow of valve are made by turning stem and disc together. Features as following:
1.Simple and compact construction, small in size and light in weight. Easy transportation and installation.
2.Quick 90(C) on-off operation, minimized operating torque, energy saving.
3.Sealing capability well, long service life, with no leakage under pressure test.
4.Wide selection of materials applicable for various mediums.
5.Flow curve tending to straight line. Excellent regulation performance.

nMain performance specification

Nominal Diameter		DN40(1.5")~DN1000(40")		Mm(inch)
Nominal Pressure		PN10	PN16	MPa
Test Pressure	Sealing	1.1	1.76
	Shell	1.5	2.4
Working Temperature		-15~+150(C)
Suitable Medium		Fresh water, Sewage, Sea water, Air, Vapour, Food, Medicine, Oils, Acids, Alkalis etc..
Actuator		Lever, Gear box, Pneumatic or Electric actuator

nMaterial of main parts

No.	Item	Material	Specification
1	Body	Cast iron	ASTM A126 CL.B/GG25
		Ductile iron	ASTM A536 65-45-12/GGG40
		Carbon steel	ASTM A126 WCB
		Stainless steel	ASTM A351 CF8/CF8M
		Bronze	ASTM B148 C954
2	Disc	Ductile iron	ASTM A536 65-45-12/GGG40
		Carbon steel	ASTM A126 WCB
		Stainless steel	ASTM A351 CF8/CF8M
		Bronze	ASTM B148 C954
3	Stem	Stainless steel	Astm a182 304/316/410
		Alloy steel	Monel K500
4	Seat	Elastomer
		EPDM	-15~+140(C)
		NBR	-10~+80(C)
		Viton	-20~+150(C)
		PTFE	-15~+205(C)
5	Bushing	PTFE
		Bronze