JIS Cast Iron Gate Valves

JIS Cast Iron Gate Valves

Introduction:

Cast steel gate valve is a kind of valve commonly used in the bilge water suction pipeline of ships and other places. The utility model relates to a linear motion valve which regulates fluid flow and has a spherical valve body containing a valve seat and a valve disc. This product is manufactured according to JIS f7400 standard. Nominal size is DN50~DN300, with a design pressure of 10K, has the characteristics of simple structure, good sealing, reliable use and convenient maintenance.

Medium:Water,Oil,Steam

Body Material:Cast Steel

Structural characteristics:

Exquisite selection of materials, in line with domestic and foreign standards, reasonable structure, beautiful appearance.

The stem is quenched and surface nitrided for good corrosion and scratch resistance.

It can be used with various flanged pipe standards and sealing surface patterns to meet various engineering needs and user requirements.

A full range of valve body materials, packings and gaskets can be matched according to actual working conditions and reasonable requirements of users, and are suitable for various pressure, temperature and medium conditions.

Configuration Selection:

Part name	Material	Advantages / Disadvantages
Valve Body	Bronze	1. Seawater corrosion resistance; 2. The price is slightly higher than that of cast steel and cast iron;
	Cast Steel	1. High mechanical strength and toughness; 2. It has special properties such as heat resistance, corrosion resistance and wear resistance; 3. The price is lower than that of bronze and higher than that of cast iron;
	Cast Iron	1. Not corrosion resistant; 2. The price is lower than that of bronze and cast steel;
Spool	Bronze	1. Strong low temperature resistance; 2. Seawater corrosion resistance is stronger than stainless steel (304, 316); 3. The price is slightly higher than that of stainless steel;
Spool	Stainless Steel	1. It has strong tensile, anti-wear and corrosion resistance, and will not produce corrosion, pitting, corrosion and wear; 2. Stronger than copper; 3. High temperature resistance;
Valve Stem	Stainless Steel 304	1. Acid and alkali resistance; 2. High temperature resistance; 3. The price is lower than stainless steel 316;
Valve Stem	Stainless Steel 316	1. It is more corrosion-resistant and acid resistant than stainless steel 304; 2. The price is slightly higher than that of stainless steel 304;
Valve Cover	Bronze	1. Seawater corrosion resistance; 2. The price is slightly higher than that of cast steel and cast iron;
Valve Cover	Cast Steel	1. High mechanical strength and toughness; 2. It has special properties such as heat resistance, corrosion resistance and wear resistance; 3. The price is lower than that of bronze and higher than that of cast iron;
Handwheel	Csat Iron	The price is lower than that of bronze and cast copper

The differences are as follows：

Product drawings of other low-quality suppliers		Our factory manufactures products

Low quality product features	Consequence	Features of our products	Achieve results
1. Insufficient raw materials; 2. The processing method is not standard	The wall thickness is uneven, the material distribution is uneven, the valve body is easy to be damaged, and the service life is short	It is processed in strict accordance with the standard, with uniform wall thickness and material	The product has high safety factor and long service life
1. Made of iron and carbon steel; 2. Use the recovered scrap valve to repair and then sell it again;	The hardness and accuracy of the valve cannot meet the needs of use, and the shell is easy to crack, resulting in running, emitting, dripping and leakage, and even causing oil and gas pipeline explosion	Select high-quality materials according to customer needs, and make new products in strict accordance with standards	The hardness and accuracy of the valve meet the standard quality requirements to ensure the normal operation of the equipment
To improve profit margin, purchase cheap unqualified bolts	Unqualified valve bolts lead to safety hazards, which is easy to cause accidents	Make new valves in strict accordance with the material requirements of customers, and never substitute inferior products for good ones	Meet the hardness and accuracy requirements of standard valves, ensure the quality of valves and ensure the normal operation of equipment
Flange manufacturing quality is poor, with cracks, pores, insufficient thickness and other problems	It leads to wear resistance and poor pressure bearing of the valve, and the valve is prone to quality problems, which makes short service life	Adopt standard bolts with quality assurance in strict accordance with customer requirements	Improve safety factor and prolong service life
In order to reduce the cost, cast iron valve core is used instead of bronze valve core	Cast iron valve core is easy to be corroded and damaged	Select standard materials in strict accordance with customer requirements	The product structure is reasonable and the safety factor is high
In order to reduce costs, ordinary round steel valves are used instead of stainless steel valves	1. The diameter of valve rod fails to meet the requirements; 2. The performance of alternative materials is unstable, without heat treatment, the quality can not meet the standard, and the service life is short	1. Made of stainless steel; 2. The diameter of valve rod meets the design requirements; 3. High temperature quenching and tempering heat treatment	The product has reasonable structure, high safety factor and long service life

Drawing
	① Body: Cast Iron(FC20)
	② Seat: Bronze (BC6)
	③ Disc: Bronze (BC6)
	④ Stem: Brass C3771BD

Parameter performance:

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