Name of Parts

Material

Advantages/Disadvantages

Valve Body

Bronze

Compared to pure copper, bronze has high strength and low melting point. Bronze has good castability, wear resistance and chemical stability

Cast Steel

The price is lower than bronze. Has high mechanical strength and toughness. It has special properties such as heat resistance, corrosion resistance and wear resistance.

Valve Bonnet

Bronze

Pressure resistance, wear resistance, and toughness are higher than those of brass. Bronze has a certain delay in the rusting time of the valve. more expensive than brass

Cast Steel

Cast steel has good plasticity and toughness

Valve Disc

Bronze

Seawater corrosion resistance, a little more expensive than cast steel and cast iron

Cast  Steel

Cast carbon steel has higher strength, ductility and toughness at lower cost

Valve Stem

Stainless Steel 304

304 stainless steel is austenitic stainless steel, which cannot be strengthened by heat treatment, cannot be quenched like carbon steel, and has no magnetic properties. The various mechanical properties of 304 are relatively excellent, and it has considerable corrosion resistance and high temperature resistance. It is the most widely used stainless heat-resistant steel.

Stainless Steel 316

The main feature of 316 is that it has stronger acid and alkali resistance and high temperature resistance than 304. Another notable feature of 316 stainless steel is that there is basically no thermal expansion and contraction.

Valve Seat

NBR

Its oil resistance is very good, wear resistance is also very good, heat resistance is also good, strong adhesion.

Comparison

Product Picture of other low quality supplier

Product Picture of our factory

Other low quality supplier

Consequence

Our Factory

Result

Refurbished valves, some operators sell the waste valves for the second time after repainting, which brings serious safety hazards to the quality of the project

Refurbished valves are easy to cause the shell to crack, and the phenomenon of running, running, dripping and leaking occurs, and in severe cases, the oil and gas pipelines will explode.

Manufacture brand-new valves in strict accordance with customer material requirements, and never use bad products to pretend to be good products

Meet the hardness and precision requirements of standard valves, ensure valve quality, and ensure normal operation of equipment.

Valve cover manufacturing quality is poor,

Strictly in accordance with the standard processing

Strictly in accordance with the standard processing

Valve cover quality is good, not easy to produce pores

Stem hard too low, crack, stem is not round, stem bending is not straight manufacturing defects

Stem sealing surface is easy to damage, short valve life.

Select materials according to standards and customer requirements

High stem hardness, no crack, good sealing performance, long service life of the valve

Jerry-built, the valve body wall thickness does not follow the standard processing

Uneven material, easy to damage valve body, short service life

Select materials according to standards and customer requirements

Safe to use, to meet user needs, long service life of the product

Product name

Storm valve

Standard

JIS

Medium

Air, gas, oil,etc.

Brand name

Customer required

Pressure

5K,10K

Application

Shipbuilding,ship repair

OEM service

Available

Certificate

ABS, BV, CCS, LR, RINA

Model

3060R

Angle Storm Valve

①Valve Body：Cast Steel(SC49)

②Valve Seat：Rubber(NBR)

③Valve Disc：Bronze(BC6)

④Valve Stem: Stainless Steel(SUS403)