Flange globe valve

Flange globe valve belongs to forced sealing valve, so when the valve closes, pressure must be exert…

Description：

A brief introduction:
J41W series Flange valve Sealed valves are mandatory, so the valve is closed, the valve must exert pressure to force the sealing surface does not leak. When the medium into the valve six from the bottom of the valve, the operating force required to overcome the resistance, is the stem and the packing friction and pressure generated by the media thrust force than the valve off the valve opening force, so the diameter of the valve stem, otherwise it will bend the stem top of the fault.
J41W series Flange valve The body structure of straight through, DC and right angle type. Straight through is the most common structure, but its maximum fluid resistance. DC type fluid resistance small, used for containing solid particles or the viscosity of the fluid.Multi angled body with forged valve for smaller circulation, high pressure.
Second, the operation principle and structure description:
1, the hand wheel clockwise, the valve stem moves downward, the valve closed down so that the sealing surface, will be cut off. The open pathway is reversed when the valve stem seal mentioned play the highest point.
2, the addition of a valve on the seal. In the valve open state, together with a filling layer sealing effect, and has certain protective effect on packing.
3, the nylon products for sealing, packing soft packing shape, the seal for the soft material, good sealing performance.
Three, Flange valve The characteristics of:
1, simple structure, manufacture and maintenance more convenient.
2, the working stroke is small, open and close a short time.
3, good sealing, the sealing surface between the friction force is small, longer life.
Four, application:
J41W series valve for medium natural gas, liquefied petroleum gas. This valve is used in the city of liquefied petroleum gas storage station, is also used in oil refineries, petrochemical plants, liquefied gas system of petrochemical factory, as the opening and closing device control medium cut.
Five, Flange valve The implementation of standards:

Design and manufacture	The length of the structure	Holen size	Pressure temperature Eagle	Test a test
GB12235	GB12221	GB9113 JB79	GB9131	GB/T13927 JB/T9092

Six, flange valve pressure test:

Nominal pressure	One point six	Two point five	Four	Six point four	Ten	Sixteen
strength test	Two point four	Three point eight	Six	Nine point six	Fifteen	Twenty-four
Water seal test	One point eight	Two point eight	Four point four	Seven point four	Eleven	Eighteen
The seal test	One point eight	Two point eight	Four point four	Seven point zero four	Eleven	Eighteen
Seal test	0.4-0.7

Seven, the main components of materials and properties:

Body cover plate	The stem	Sealing surface	Gasket (ring)	filler	Working temperature	Applicable medium
WCB	2Cr13	13Cr STL Body material nylon	Enhancedflexiblegraphite 1Crl3 / graphite 08 mild steel 0Cr18Ni9Ti OCr18Ni12Mo2Ti	Flexible graphite Enhancedflexiblegraphite SFB-260 SFP-260	Less than or equal to 425	Water, steam, oil
WC1	38CrMoAI 25Cr2MoV				Less than or equal to 450
WC6					Less than or equal to 540
WC9					Less than or equal to 570
ZGCr5Mo					Less than or equal to 540
ZG1Cr18Ni9Ti	1Cr18Ni9Ti				Less than or equal to 200	Nitrose
ZGCr18Ni12Mo2Ti	1C18Ni12Mo2Ti				Less than or equal to 200	Acetic acid

Eight, the design and selection of ordering instructions:
1, the product name and model of the products of the nominal diameter of pressure material by the use of the medium temperature and products with the attachment so that we provide you the correct selection.
2, if you have special request, please specify when ordering products in.
3, if the unit has been selected by the design model, please press the model directly to our sales department order.
4, the occasion is very important when using more complex or the environment when you try to provide design drawings.
Nine, customer service service commitment:
1, my company sold Zhongwei valve product quality problems within twelve months, responsible for free maintenance.
2, the warranty period if the products of our company have any quality problems, our company is responsible for free repair or replacement.
3, the warranty period if the user use undeserved, cause damage to the product, our company is responsible for the maintenance, collect the damaged parts cost.
4, after the warranty period of product quality problems, our company is responsible for the maintenance, collect the damaged parts cost.
5, if the user needs to our service, our company in the province of the user service personnel arrived at the scene within 12 hours, arrived at the scene 48 hours outside users.

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