Pilot safety valve

Pilot safety valve is suitable for high back pressure, large flow, high pressure and compact install…

Description：

A, product introduction:
AX46F series Pilot type safety valve Suitable for high pressure, high flow, high pressure and compact installation site application position. Pilot type safety valve is mainly used in the fields of petroleum, chemical, electric power, metallurgy and city gas, pressure equipment, container or piping on the ideal overpressure protection device.
Second, measurement principle:
AX46F series Pilot type safety valve Is a safety valve from the main valve and pilot valve composed of a novel structure, guide the switch valve response system of medium pressure self action to control the main valve. When the normal work of the system, the pilot type safety valve in the closed state, the system pressure through the dome chamber inlet pressure tube, the pilot valve and the gas chamber pressure pipe to the main valve at the top, resulting in a downward force on the net the main valve, the main valve is in the closed state.When the system pressure reaches the set pressure, the pilot valve open and closed shuttle pilot valve inlet passage, the main valve chamber pressure through the pilot valve discharge pressure relief system, because the pressure is higher than the back seat pressure, shuttle closed inlet channel, so as to partition the fluid flow in the pilot valve, main valve and gas chamber a decrease in pressure, the main valve valve fully open, fluid through the main valve discharge pressure. When the system pressure drops to a certain value, the spring guide valve overcomes the valve inlet pressure acting on the shuttle on the guiding force, valve seat, the top open shuttle, dome air chamber and finally makes the re entering the main valve off the main valve fluid.
Three, widely used:
AX46F series Pilot type safety valve Widely used in chemical and petrochemical, petroleum, paper, mining, electricity, gas, food, pharmaceutical, water supply and drainage, municipal, mechanical equipment, electronic industry, urban construction and other fields.
Four, structural characteristics:
1, soft sealing to ensure good sealing seat before and after take-off safety valve.
The set pressure of 2, close to the allowable working pressure safety valve.
3, small pressure can make the safety valve of the main valve to achieve full opening state quickly.
4, safety valve performance and opening height from back pressure.
5, the opening and closing pressure adjustable.
6, the pilot valve does not flow type structure design reduces the emission of harmful media and environmental pollution.
7, safety valve set pressure on-line detection.
The main advantage is directly for the pilot valve spring indirectly improves the sensitivity of the action, and the main valve sleeve with piston type double seal valve seat structure, action of high precision, good repeatability, the back seat quickly, no leakage, can take high pressure discharge, long life, work stable and reliable work, it can online adjust, repeatedly starting after discharge, still can automatically return to the seat, closed tight, convenient operation and maintenance.
Five, design and manufacturing standards:
The structure of standard length: GB/T 12221-2005;
Flange standard: GB/T 9113;
Pressure temperature rating: GB/T 12224-2005;
Test standards: GB/T 13927-2008.
Six, operation steps:
1, safety valve
The first valve main valve after the vote.
2, removal of safety valve
First cut the main valve, cut sub valve
Seven, the main components of materials:

NO.	Part name	Ax46Y/F material	KAX46Y/F material
One	valve body	WCB	WCB
Two	Valve	2Cr13/2Cr13+PTFE	1Cr18Ni9Ti/1Cr18Ni9Ti+PTFE
Three	The guide sleeve	1Cr18Ni9Ti	1Cr18Ni9Ti
Four	Spring	50CrVA	50CrVA
Five	O ring	Fluorine rubber	Fluorine rubber
Six	Valve cover	Twenty-five	Twenty-five
Seven	Pilot valve	parts

Eight, dimensions and connection dimensions:

Model

Nominal diameter

DN'

Z- D?

D1'

D2'

D6'

Z'- d'?

Ax46F-16Y

AF46Y-16

Twenty-five

Fifteen

One hundred and ten

Ninety-five

One hundred and fifty

Three hundred and sixty-five

Thirty-two

One hundred and fifteen

Eighty-five

Sixty-five

Sixteen

4-14

One hundred and forty

One hundred

Seventy-eight

Eighteen

4-18

Thirty-two

Twenty

One hundred and fifteen

One hundred

One hundred and fifty

Three hundred and seventy-five

Forty

One hundred and forty

One hundred

Seventy-eight

Eighteen

4-18

One hundred and fifty

One hundred and ten

Eighty-five

Eighteen

4-18

Forty

Twenty-five

One hundred and twenty

One hundred and ten

One hundred and sixty

Three hundred and ninety

Fifty

One hundred and fifty

One hundred and ten

Eighty-five

Eighteen

4-18

One hundred and sixty-five

One hundred and twenty-five

One hundred

Twenty

4-18

Fifty

Thirty-two

One hundred and thirty-five

One hundred and twenty

One hundred and sixty

Four hundred and ten

Sixty-five

One hundred and sixty-five

One hundred and twenty-five

One hundred

Twenty

4-18

One hundred and eighty-five

One hundred and forty-five

One hundred and twenty

Twenty

4-18

Sixty-five

Forty

One hundred and sixty

One hundred and forty

One hundred and seventy-five

Four hundred and thirty-five

Eighty

One hundred and eighty-five

One hundred and forty-five

One hundred and twenty

Twenty

4-18

Two hundred

One hundred and sixty

One hundred and thirty-five

Twenty

8-18

Eighty

Fifty

One hundred and seventy

One hundred and thirty-five

One hundred and seventy-five

Four hundred and fifty-one

One hundred

Two hundred

One hundred and sixty

One hundred and thirty-five

Twenty

8-18

Two hundred and twenty

One hundred and eighty

One hundred and fifty-five

Twenty-two

8-18

One hundred

Sixty-five

One hundred and ninety-five

One hundred and seventy-five

One hundred and ninety-five

Five hundred

One hundred and twenty-five

Two hundred and twenty

One hundred and eighty

One hundred and fifty-five

Twenty-two

8-18

Two hundred and fifty

Two hundred and ten

One hundred and eighty-five

Twenty-four

8-18

One hundred and twenty-five

Eighty

Two hundred and ten

One hundred and ninety

Two hundred and twenty

Five hundred and twenty-six

One hundred and fifty

Two hundred and fifty

Two hundred and ten

One hundred and eighty-five

Twenty-two

8-18

Two hundred and eighty-five

Two hundred and forty

Two hundred and ten

Twenty-four

8-23

One hundred and fifty

One hundred

Two hundred and fifty-five

Two hundred and thirty

Two hundred and sixty-five

Six hundred and twenty-three

One hundred and seventy-five

Two hundred and eighty-five

Two hundred and forty

Two hundred and ten

Twenty-four

8-23

Three hundred and fifteen

Two hundred and seventy

Two hundred and forty

Twenty-six

8-23

Two hundred

One hundred and twenty-five

Three hundred

Two hundred and sixty

Three hundred

Six hundred and ninety

Two hundred and fifty

Three hundred and forty

Two hundred and ninety-five

Two hundred and sixty-five

Twenty-six

12-23

Four hundred and five

Three hundred and fifty-five

Three hundred and twenty

Thirty

12-26

Ax46F-25Y

AF46Y-25

Twenty-five

Fifteen

One hundred and ten

Ninety-five

One hundred and fifty

Three hundred and sixty-five

Thirty-two

One hundred and fifteen

Eighty-five

Sixty-five

Sixteen

4-14

One hundred and forty

One hundred

Seventy-eight

Eighteen

4-18

Thirty-two

Twenty

One hundred and fifteen

One hundred

One hundred and fifty

Three hundred and seventy-five

Forty

One hundred and forty

One hundred

Seventy-eight

Eighteen

4-18

One hundred and fifty

One hundred and ten

Eighty-five

Eighteen

4-18

Forty

Twenty-five

One hundred and twenty

One hundred and ten

One hundred and sixty

Three hundred and ninety

Fifty

One hundred and fifty

One hundred and ten

Eighty-five

Eighteen

4-18

One hundred and sixty-five

One hundred and twenty-five

One hundred

Twenty

4-18

Fifty

Thirty-two

One hundred and thirty-five

One hundred and twenty

One hundred and sixty

Four hundred and ten

Sixty-five

One hundred and sixty-five

One hundred and twenty-five

One hundred

Twenty

4-18

One hundred and eighty-five

One hundred and forty-five

One hundred and twenty

Twenty

4-18

Sixty-five

Forty

One hundred and sixty

One hundred and forty

One hundred and seventy-five

Four hundred and thirty-five

Eighty

One hundred and eighty-five

One hundred and forty-five

One hundred and twenty

Twenty-two

8-18

Two hundred

One hundred and sixty

One hundred and thirty-five

Twenty

8-18

Eighty

Fifty

One hundred and seventy

One hundred and thirty-five

One hundred and seventy-five

Four hundred and fifty-one

One hundred

Two hundred

One hundred and sixty

One hundred and thirty-five

Twenty-two

8-18

Two hundred and twenty

One hundred and eighty

One hundred and fifty-five

Twenty-two

8-18

One hundred

Sixty-five

One hundred and ninety-five

One hundred and seventy-five

One hundred and ninety-five

Five hundred

One hundred and twenty-five

Two hundred and thirty

One hundred and ninety

One hundred and sixty

Twenty-four

8-23

Two hundred and fifty

Two hundred and ten

One hundred and eighty-five

Twenty-two

8-18

One hundred and twenty-five

Eighty

Two hundred and ten

One hundred and ninety

Two hundred and twenty

Five hundred and twenty-six

One hundred and fifty

Two hundred and seventy

Two hundred and twenty

One hundred and eighty-eight

Twenty-eight

8-26

Two hundred and eighty-five

Two hundred and forty

Two hundred and ten

Twenty-four

8-23

One hundred and fifty

One hundred

Two hundred and fifty-five

Two hundred and thirty

Two hundred and sixty-five

Six hundred and twenty-three

One hundred and seventy-five

Three hundred

Two hundred and fifty

Two hundred and eighteen

Thirty

8-26

Three hundred and ten

Two hundred and seventy

Two hundred and forty

Twenty-six

8-23

Two hundred

One hundred and twenty-five

Three hundred

Two hundred and sixty

Three hundred

Six hundred and ninety

Two hundred and fifty

Three hundred and sixty

Three hundred and ten

Two hundred and seventy-eight

Thirty-four

12-26

Four hundred and five

Three hundred and fifty-five

Three hundred and twenty

Thirty

12-26

Ax46F-40Y

AF46Y-40

Twenty-five

Fifteen

One hundred and ten

Ninety-five

One hundred and fifty

Three hundred and sixty-five

Thirty-two

One hundred and fifteen

Eighty-five

Sixty-five

Fifty-eight

Sixteen

4-14

One hundred and forty

One hundred

78< "span=" >

Eighteen

4-18

Thirty-two

Twenty

One hundred and fifteen

One hundred

One hundred and fifty

Three hundred and seventy-five

Forty

One hundred and forty

One hundred

Seventy-eight

Sixty-six

Eighteen

4-18

One hundred and fifty

One hundred and ten

Eighty-five

Eighteen

4-18

Forty

Twenty-five

One hundred and twenty

One hundred and ten

One hundred and sixty

Three hundred and ninety

Fifty

One hundred and fifty

One hundred and ten

Eighty-five

Seventy-six

Eighteen

4-18

One hundred and sixty-five

One hundred and twenty-five

One hundred

Twenty

4-18

Fifty

Thirty-two

One hundred and thirty-five

One hundred and twenty

One hundred and sixty

Four hundred and ten

Sixty-five

One hundred and sixty-five

One hundred and twenty-five

One hundred

Eighty-eight

Twenty

4-18

One hundred and eighty-five

One hundred and forty-five

One hundred and twenty

Twenty

4-18

Sixty-five

Forty

One hundred and sixty

One hundred and forty

One hundred and seventy-five

Four hundred and thirty-five

Eighty

One hundred and eighty-five

One hundred and forty-five

One hundred and twenty

One hundred and ten

Twenty-two

8-18

Two hundred

One hundred and sixty

One hundred and thirty-five

Twenty

8-18

Eighty

Fifty

One hundred and seventy

One hundred and thirty-five

One hundred and seventy-five

Four hundred and fifty-one

One hundred

Two hundred

One hundred and sixty

One hundred and thirty-five

One hundred and twenty-one

Twenty-two

8-18

Two hundred and twenty

One hundred and eighty

One hundred and fifty-five

Twenty-two

8-18

One hundred

Sixty-five

One hundred and ninety-five

One hundred and seventy-five

One hundred and ninety-five

Five hundred

One hundred and twenty-five

Two hundred and thirty-five

One hundred and ninety

One hundred and sixty

One hundred and fifty

Twenty-four

8-23

Two hundred and fifty

Two hundred and ten

One hundred and eighty-five

Twenty-two

8-18

One hundred and twenty-five

Eighty

Two hundred and ten

One hundred and ninety

Two hundred and twenty

Five hundred and twenty-six

One hundred and fifty

Two hundred and seventy

Two hundred and twenty

One hundred and eighty-eight

One hundred and seventy-six

Twenty-eight

8-26

Two hundred and eighty-five

Two hundred and forty

Two hundred and ten

Twenty-four

8-23

One hundred and fifty

One hundred

Two hundred and fifty-five

Two hundred and thirty

Two hundred and sixty-five

Six hundred and twenty-three

One hundred and seventy-five

Three hundred

Two hundred and fifty

Two hundred and eighteen

Two hundred and four

Thirty

8-26

Three hundred and ten

Two hundred and seventy

Two hundred and forty

Twenty-six

8-23

Two hundred

One hundred and twenty-five

Three hundred

Two hundred and sixty

Three hundred

Six hundred and ninety

Two hundred and fifty

Three hundred and seventy-five

Three hundred and twenty

Two hundred and eighty-two

Two hundred and sixty

Thirty-eight

12-30

Four hundred and five

Three hundred and fifty-five

Three hundred and twenty

Thirty

12-26

Ax46F-64Y

AF46Y-64

Twenty-five

Fifteen

One hundred and ten

One hundred

One hundred and sixty

Three hundred and sixty-five

Thirty-two

One hundred and forty

One hundred

Seventy-eight

Fifty-eight

Twenty-two

4-18

One hundred and forty

One hundred

Seventy-eight

Sixty-six

Eighteen

4-18

Thirty-two

Twenty

One hundred and thirty

One hundred and ten

One hundred and sixty

Three hundred and seventy-five

Forty

One hundred and fifty-five

One hundred and ten

Eighty-two

Sixty-six

Twenty-four

4-23

One hundred and fifty

One hundred and ten

Eighty-five

Seventy-six

Eighteen

4-18

Forty

Twenty-five

One hundred and thirty

One hundred and twenty

One hundred and seventy

Four hundred and forty-five

Fifty

One hundred and seventy

One hundred and twenty-five

Ninety-five

Seventy-six

Twenty-four

4-23

One hundred and sixty-five

One hundred and twenty-five

One hundred

Eighty-eight

Twenty

4-18

Fifty

Thirty-two

One hundred and thirty-five

One hundred and thirty

One hundred and ninety-five

Four hundred and sixty

Sixty-five

One hundred and eighty

One hundred and thirty-five

One hundred and five

Eighty-eight

Twenty-six

4-23

One hundred and eighty-five

One hundred and forty-five

One hundred and twenty

One hundred and ten

Twenty-two

8-18

Sixty-five

Forty

One hundred and seventy-five

One hundred and sixty

Two hundred and twenty-five

Four hundred and ninety-five

Eighty

Two hundred and five

One hundred and sixty

One hundred and thirty

One hundred and ten

Twenty-eight

8-23

Two hundred

One hundred and sixty

One hundred and thirty-five

One hundred and twenty-one

Twenty-two

8-18

Eighty

Fifty

One hundred and seventy-five

One hundred and sixty

Two hundred and twenty-five

Five hundred and twenty-five

One hundred

Two hundred and fifteen

One hundred and seventy

One hundred and forty

One hundred and twenty-one

Thirty

8-23

Two hundred and thirty-five

One hundred and ninety

One hundred and sixty

One hundred and fifty

Twenty-four

8-23

One hundred

Sixty-five

One hundred and ninety-five

Two hundred and forty-five

Five hundred and sixty-five

One hundred and twenty-five

Two hundred and fifty

Two hundred

One hundred and sixty-eight

One hundred and fifty

Thirty-two

8-26

Two hundred and seventy

Two hundred and twenty

One hundred and eighty-eight

One hundred and seventy-six

Twenty-eight

8-25

One hundred and fifty

One hundred

Two hundred and eighty

Two hundred and sixty-five

Six hundred and ten

Two hundred

Three hundred and forty-five

Two hundred and eighty

Two hundred and forty

Two hundred and four

Thirty-eight

8-34

Three hundred and seventy-five

Three hundred and twenty

Two hundred and eighty-two

Two hundred and sixty

Thirty-eight

12-30

Two hundred

One hundred and twenty-five

Three hundred

Two hundred and ninety-five

Three hundred

Six hundred and eighty

Two hundred and fifty

Four hundred and five

Three hundred and forty-five

Three hundred

Two hundred and sixty

Forty-four

12-34

Four hundred and fifty

Three hundred and eighty-five

Three hundred and forty-five

Three hundred and thirteen

Forty-two

12-34

Ax46F-100Y

AF46Y-100

Twenty-five

Fifteen

One hundred and ten

One hundred

One hundred and sixty

Three hundred and sixty-five

Thirty-two

One hundred and forty

One hundred

Seventy-eight

Fifty-eight

Twenty-four

4-18

One hundred and forty

One hundred

Seventy-eight

Sixty-six

Eighteen

4-18

Thirty-two

Twenty

One hundred and thirty

One hundred and ten

One hundred and sixty

Three hundred and seventy-five

Forty

One hundred and fifty-five

One hundred and ten

Eighty-two

Sixty-six

Twenty-four

4-23

One hundred and fifty

One hundred and ten

Eighty-five

Seventy-six

Eighteen

4-18

Forty

Twenty-five

One hundred and thirty

One hundred and twenty

One hundred and seventy

Four hundred and forty-five

Fifty

One hundred and seventy

One hundred and twenty-five

Ninety-five

Seventy-six

Twenty-six

4-23

One hundred and sixty-five

One hundred and twenty-five

One hundred

Eighty-eight

Twenty

4-18

Fifty

Thirty-two

One hundred and thirty-five

One hundred and thirty

One hundred and ninety-five

Four hundred and sixty

Sixty-five

One hundred and ninety-five

One hundred and forty-five

One hundred and twelve

Eighty-eight

Twenty-eight

4-26

One hundred and eighty-five

One hundred and forty-five

One hundred and twenty

One hundred and ten

Twenty-two

8-18

Sixty-five

Forty

One hundred and seventy-five

One hundred and sixty

Two hundred and twenty-five

Four hundred and ninety-five

Eighty

Two hundred and twenty

One hundred and seventy

One hundred and thirty-eight

One hundred and ten

Thirty-two

8-26

Two hundred

One hundred and sixty

One hundred and thirty-five

One hundred and twenty-one

Twenty-two

8-18

Eighty

Fifty

One hundred and seventy-five

One hundred and sixty

Two hundred and twenty-five

Five hundred and twenty-five

One hundred

Two hundred and thirty

One hundred and eighty

One hundred and forty-eight

One hundred and twenty-one

Thirty-four

8-26

Two hundred and thirty-five

One hundred and ninety

One hundred and sixty

One hundred and fifty

Twenty-four

8-23

One hundred

Sixty-five

One hundred and ninety-five

Two hundred and forty-five

Five hundred and sixty-five

One hundred and twenty-five

Two hundred and sixty-five

Two hundred and ten

One hundred and seventy-two

One hundred and fifty

Thirty-eight

8-30

Two hundred and seventy

Two hundred and twenty

One hundred and eighty-eight

One hundred and seventy-six

Twenty-eight

8-25

One hundred and fifty

One hundred

Two hundred and eighty

Two hundred and sixty-five

Six hundred and ten

Two hundred

Three hundred and fifty-five

Two hundred and ninety

Two hundred and fifty

Two hundred and four

Forty-six

12-34

Three hundred and seventy-five

Three hundred and twenty

Two hundred and eighty-two

Two hundred and sixty

Thirty-eight

12-30

Two hundred

One hundred and twenty-five

Three hundred

Two hundred and ninety-five

Three hundred

Six hundred and eighty

Two hundred and fifty

Four hundred and thirty

Three hundred and sixty

Three hundred and twelve

Two hundred and sixty

Fifty-four

12-41

Four hundred and fifty

Three hundred and eighty-five

Three hundred and forty-five

Three hundred and thirteen

Forty-two

12-34

Nine, the safety valve order main items:
Safety valve medium, pressure rating, open mode (full Kai / Weiqi) set off the pressure, determine the valve size, connection mode, standard maximum temperature, flow rate of release per hour, the body material inside the body structure, working principle, installation instructions and other related technical data. Safety valve selection is mainly based on the take-off (the pressure and temperature pressure flow) neat general design institute will be given in the caliber, the steam pressure, flow and pressure jump, can be inferred from the safety valve size. Usually a smaller caliber than the design institute selected. When the occasion is very important or complicated when you try to provide design drawings. And detailed parameters by our Zhongwei company expert audit checks for you.

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Pilot safety valve

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