YDGWZ41 National standard corrugated pipe gate valveDetailed product description：

structural characteristics
The YDGWZ41 national standard corrugated pipe gate valve is suitable for cutting off or connecting pipeline media in various working conditions such as petroleum, chemical, pharmaceutical, fertilizer, and power industries with a nominal pressure of PN1.6~16MPa and a working temperature of -29~350 ℃.  

1. Reasonable product structure, reliable sealing, excellent performance, and beautiful appearance;
2. The sealing surface is welded with Co based hard alloy, which has good wear resistance, corrosion resistance, friction resistance, and long service life;
3. The valve stem undergoes quenching and surface nitriding treatment, exhibiting excellent corrosion resistance and friction resistance;
4. Double sealing, more reliable performance;
5. Valve stem lifting position indication, more intuitive;
6. The material of the parts and the dimensions of the flanges and welding ends can be reasonably selected according to actual working conditions or user requirements to meet various engineering needs.

Main component materials

Serial number	Name	Material
one	valve body	WCB WC1、WC6、WC9、C5 CF8、CF8M、CF3、CF3M
two	valve plate	25、1Cr13、2Cr13 1Cr18Ni9Ti、0Cr18Ni12Mo2Ti 20Cr1Mo1V、25Cr2MoV
three	valve stem	25、1Cr13、2Cr13 1Cr18Ni9Ti、0Cr18Ni12Mo2Ti 20Cr1Mo1V、25Cr2MoV
four	Bellows component	1Cr18Ni9Ti、304、316、304L、316L
five	support	WCB、WC1、WC6、WC9、C5 CF8、CF8M、CF3、CF3M、
six	Gasket	Flexible graphite+stainless steel, PTFE
seven	valve cover	WCB WC1、WC6、WC9、C5 CF8、CF8M、CF3、CF3M
eight	hex nut	0Cr18Ni9Ti、0Cr18Ni12Mo2Ti 35CrMoV、25Cr2MoV
nine	double-ended bolt	0Cr18Ni9Ti、0Cr18Ni12Mo2Ti 35CrMoV、25Cr2MoV
ten	filler	flexible graphite
eleven	gland	WCB WC1、WC6、WC9、C5 CF8、CF8M、CF3、CF3M
twelve	stem nut	Copper alloy
thirteen	handwheel	WCB QT400-18

Technical Specifications

structural form	BB-BG-OS & Y
Drive Type	manual
	electric
design standards	GB12234
structural length	GB12221
flange connection	GB9113、JB79、HG20596
Testing and inspection	JB/T 9092、GB/T13927

performance specifications

Nominal pressure (MPa)	Shell test pressure (MPa)	Sealing test pressure (MPa)	Applicable temperature (℃)	Using media
one point six	two point four	one point seven six	≤350℃	Water, steam, oil products, etc
two point five	three point seven five	two point seven five
four	six	four point four
six point four	nine point six	seven point zero four

Connection size and weight

Model

YDGWZ41-16

Stress level

PN16

caliber

fifteen

twenty

twenty-five

thirty-two

forty

fifty

sixty-five

eighty

one hundred

one hundred and twenty-five

one hundred and fifty

two hundred

two hundred and fifty

three hundred

three hundred and fifty

L

one hundred and eight

one hundred and seventeen

one hundred and twenty-seven

one hundred and forty

one hundred and sixty-five

one hundred and seventy-eight

one hundred and ninety

two hundred and three

two hundred and twenty-nine

two hundred and fifty-four

two hundred and sixty-seven

two hundred and ninety-two

three hundred and thirty

three hundred and fifty-six

three hundred and eighty-one

H

two hundred

two hundred and ten

two hundred and fifty

two hundred and sixty

two hundred and ninety

three hundred and seventy

three hundred and ninety-eight

four hundred and forty

four hundred and ninety

five hundred and thirty

five hundred and eighty

six hundred and seventy

seven hundred and sixty

eight hundred and fifty

nine hundred and fifty

W

one hundred and twenty

one hundred and forty

one hundred and forty

one hundred and eighty

two hundred

two hundred and twenty

two hundred and sixty

two hundred and eighty

three hundred

three hundred and forty

four hundred

four hundred and fifty

four hundred and fifty

five hundred

five hundred

Weight (kg)

eight

nine

ten

fifteen

twenty-two

thirty

forty-three

fifty-seven

seventy-three

one hundred and five

one hundred and fifty

one hundred and ninety

two hundred and seventy

three hundred and eighty

four hundred and eighty

Model

YDGWZ41-40

Stress level

PN40

caliber

fifteen

twenty

twenty-five

thirty-two

forty

fifty

sixty-five

eighty

one hundred

one hundred and twenty-five

one hundred and fifty

two hundred

two hundred and fifty

three hundred

three hundred and fifty

L

one hundred and sixty-five

one hundred and ninety

two hundred and sixteen

two hundred and twenty-nine

two hundred and forty-one

two hundred and ninety-two

three hundred and thirty

three hundred and fifty-six

four hundred and thirty-two

five hundred and eight

five hundred and fifty-nine

six hundred and sixty

seven hundred and eighty-seven

eight hundred and thirty-eight

eight hundred and eighty-nine

H

two hundred

two hundred and ten

two hundred and fifty

two hundred and sixty

two hundred and ninety

three hundred and seventy

three hundred and ninety-eight

four hundred and forty

four hundred and ninety

five hundred and thirty

five hundred and eighty

six hundred and seventy

seven hundred and sixty

eight hundred and fifty

nine hundred and eighty

W

one hundred and twenty

one hundred and forty

one hundred and forty

one hundred and eighty

two hundred

two hundred and twenty

two hundred and sixty

two hundred and eighty

three hundred

three hundred and forty

four hundred

four hundred and fifty

four hundred and fifty

five hundred

five hundred

Weight (kg)

nine

ten

twelve

eighteen

twenty-five

thirty-eight

fifty-three

seventy

eighty-eight

one hundred and twenty-five

one hundred and seventy-five

two hundred and twenty-five

three hundred and ten

four hundred and forty

five hundred and sixty