SS 321 / 321H Instrumentation Ball Valves

SS 321 2 - Way Ball Valve, Stainless Steel 321 Ball Valves, Grade 321H Stainless Steel Instrument Ball Valve Suppliers, Stainless Steel 321 Instrumentation Ball Valves, Stainless Steel 321H 3 - way Ball Valves, UNS S32109 Instrumentation Ball Valves, Stainless Steel 321H Instrumentation Ball Valves, DIN 1.4541 Instrumentation Ball Valve, SS 321 / 321H One-Piece Instrumentation Ball Valves Manufacturers in Mumbai, India.

Stainless steel 321 / 321H Instrumentation ball valves founds its utility in various industrial applications. Due to its exceptional features and unmatched qualities, these are highly appreciated by the engineers. These instrumentation ball valves significantly used in the pneumatic and hydraulic system. This range of ball valves creates a bleed configuration and double block in the pipelines. These valves come in various shapes, size, length, the thickness in accordance with the requirements and demands of the customers.

Grade description-
These instrumentation ball valves are formed with Stainless Steel 321 / 321H alloy that is a stabilized austenitic steel alloy combine with 18% of chromium and 8 % of nickel content. In addition to it includes titanium content that offers good resistance to general corrosion. These valves resist good oxidation up to 1500 degree F whereas offers good stress rupture and creep properties as compared to other alloys. Furthermore, it possesses good low-temperature toughness also. These valves also consider high carbon content that enhances excellent tensile strength and creeps resistance at a temperature range of 1000 degree F.

The valves are stabilized against chromium carbide formation due to the titanium content. Furthermore, in hydrocarbon services, these resists polythionic acid stress corrosion cracking and also utilized in fluoride free caustic or chlorides solutions at moderate temperatures. These ball valves are easily formed and possess good ductility. The hardness of these valves are not achieved by heat treatment, therefore, these are only cold worked. By means of standard shop fabrication practices, these are easily welded and fabricated.

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Company details-
Virgin Engineers is one of the well-known manufacturers, supplier, and exporter of Stainless Steel 321 / 321H Instrumentation Ball Valves. The entire product manufactured by us in accordance with the industry norms and global standards. We are completely engaged in manufacturing in order to elevate the standard of our products and facilities. Our aim is to fabricate superior quality product and fulfill the desires and requirements of our customers. In addition to obtain the best quality product we make use of top-notch quality of raw material and state of art machinery and advance technology for its fabrication.

Quality testing & inspection-
Giving priority to the quality we adhere to test and inspect each and every product on the various levels to attain the best quality and error-free product. Such a test is like a mechanical test, hardness test, chemical analysis, pitting resistance test, flaring test, macro/micro test, flattening test. Furthermore, other test is like an ultrasonic test, PMI test, radiography test, IGC test, and tensile strength test.

During dispatching the product our esteem clients we provide important documentation that is attested with the product. These documents are like commercial invoice, raw material traceability records, NABL approved lab test reports, heat treatment charts, guarantee letters and quality assurance plan.

Packing of product-
Utmost care and measures are taken to maintain product quality while delivering the product. Therefore through the quality packaging material, we pack the products in wooden cases, pallets, cartons and in crates. Evenmore we pack the products as per the customer’s requirements and demands.




ASTM A276, A351, A494 / ASME SA276, SA351, SA494


Pressure rating

up to 6000 psi (413 bar).


Size Range

¼" to 1”



up to 1200°F(648 °C)


End connections

Screwed (NPT / BSPP / BSPT)



DIN, ASTM, BS and all International Standards.

    SS 321 1.4541 S32100 SUS 321 X6CrNiTi18-10
    SS 321H 1.4878 S32109 SUS 321H X12CrNiTi18-9
    Grade C Mn Si P S Cr N Ni Ti
    SS 321 0.08 max 2.0 max 1.0 max 0.045 max 0.030 max 17.00 - 19.00 0.10 max 9.00 - 12.00 5(C+N) – 0.70 max
    SS 321H 0.04 – 0.10 2.0 max 1.0 max 0.045 max 0.030 max 17.00 - 19.00 0.10 max 9.00 - 12.00 4(C+N) – 0.70 max
    Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
    8.0 g/cm3 1457 °C (2650 °F)) Psi – 75000 , MPa – 515 Psi – 30000 , MPa – 205 35 %


Stainless Steel 321 / 321H Ball Valve 2 – pc
Ball Valve 2 – pc
Stainless Steel 321 / 321H Ball Valve 2 – pc HP
Ball Valve 2 – pc HP
Stainless Steel 321 / 321H Rising Stem Ball Valves
Rising Stem Ball Valves
Stainless Steel 321 / 321H Segmented Ball Valves
Segmented Ball Valves

Quality Assurance

Stainless Steel S32100, S32109 instrumentation ball valves are manufactured and controlled to international standards such as ASTM, ASME, BS, MSS, EN, DIN or WERKSTOFFE. Our products undergo stringent quality tests before they are dispatched.

Material Testing

The material tests performed on stainless steel 321 / 321H ball valves are burst tests, Ultrasonic Test, Mechanical Testing, Cryogenic testing, low temperature testing, High pressure gas testing, High temperature testing , etc. are some of the tests conducted at our facility. We welcome stage wise inspection from any of your representative or third party inspection agencies.

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