Manufacturer, Supplier & Exporter of Stainless Steel 304 Diaphragm Valve

Stainless Steel 304 Diaphragm Valves are precision-engineered control devices designed to regulate or stop the flow of liquids, gases, or slurries in a pipeline. Unlike conventional valves, diaphragm valves use a flexible diaphragm that presses against a seat to block flow, making them ideal for clean or corrosive fluid applications. The SS 304 material ensures high corrosion resistance and durability, even under aggressive chemical conditions or sterile environments such as pharmaceuticals or food-grade systems..

Riddhi Siddhi Impex, a trusted name in the valve manufacturing industry, is a premier Stainless Steel 304 Diaphragm Valve Domestic Supplier and exporter. The company manufactures these valves using top-quality stainless steel in compliance with international standards like ASTM, DIN, BS, and ASME. Their SS 304 diaphragm valves are built to offer long-lasting performance, excellent sealing, and minimal maintenance, ensuring efficient operation across demanding industrial sectors.

One of the primary advantages of using SS 304 in diaphragm valves is its resistance to oxidation, acidic and caustic media, and high-pressure environments. These valves are highly suitable for applications in biotechnology, water treatment, chemical processing, pharmaceutical manufacturing, food and beverage industries, and pulp and paper processing. The sanitary design ensures that there’s no contamination between valve parts and the fluid medium.

Diaphragm valves are widely appreciated for their leak-proof performance and ability to handle viscous or contaminated media without clogging. The SS 304 diaphragm valves supplied by Riddhi Siddhi Impex come in weir-type and straight-through designs, with manual handwheel or pneumatic actuator operation. Each valve is tested under strict quality control measures for pressure retention, leakage, and seat integrity to ensure reliable service life.

Riddhi Siddhi Impex has established itself as a leading Stainless Steel 304 Diaphragm Valve Domestic Supplier in India by maintaining consistent supply across major industrial and metropolitan hubs. The company supplies to cities like Mumbai, Delhi, Bengaluru (Bangalore), Hyderabad, Chennai, Kolkata, Pune, Ahmedabad, Surat, Vadodara, Rajkot, Nagpur, Indore, Bhopal, Jaipur, Kanpur, Lucknow, Agra, Varanasi, Amritsar, Chandigarh, Mysuru (Mysore), Udaipur, Jodhpur, Visakhapatnam, Coimbatore, Madurai, Kochi, Thiruvananthapuram, Mangalore, Nashik, Kolhapur, Chandrapur, Akola, Vilayat, Somnath, Dahej, Ankleshwar, Navsari, Valsad, Rajpipla, and many more.

Stainless Steel 304 Diaphragm Valve

Specifications

Property	Specification
Product Name	Stainless Steel 304 Diaphragm Valve
Size Range	½" to 12"
Pressure Rating	Class 150 – Class 600
End Connections	Flanged, Butt Weld, Threaded, Tri-Clamp
Diaphragm Material	EPDM, PTFE, Viton, Silicone
Operation	Manual, Pneumatic, Electric Actuator
Body Material	Stainless Steel 304 (ASTM A351 CF8)

Chemical Composition of SS 304

Element	Content (%)
Carbon (C)	≤ 0.08
Manganese (Mn)	≤ 2.00
Silicon (Si)	≤ 1.00
Chromium (Cr)	18.0 – 20.0
Nickel (Ni)	8.0 – 10.5
Phosphorus (P)	≤ 0.045
Sulfur (S)	≤ 0.03

Mechanical Properties of SS 304

Property	Value
Tensile Strength	≥ 515 MPa
Yield Strength	≥ 205 MPa
Elongation	≥ 40%
Hardness	≤ 201 HB

Dimension Chart (Sample)

Nominal Size (Inch)	Face-to-Face Length (mm)	Height (mm)	Weight (kg)
1"	115	180	2.1
2"	150	210	4.5
3"	190	250	7.8
4"	230	295	11.2

Equivalent Grades

Standard	Grade
ASTM	304 / A351 CF8
EN	1.4301
JIS	SUS 304
DIN	X5CrNi18-10

Equivalent Standards

Standard	Description
ASME B16.34	Valves – Flanged, Threaded and Welding End
ASTM A351	Standard Specification for Castings, Austenitic SS
DIN 3202	Face-to-Face Dimensions
ISO 5208	Pressure Testing of Valves

Other Types of Diaphragm Valves

Type	Description
Weir Type	Ideal for corrosive and dirty media
Straight Through Type	Designed for minimum flow resistance
Manual Diaphragm Valve	Operated via handwheel
Pneumatically Actuated	For automated or remote control applications

SS 304 diaphragm valves from Riddhi Siddhi Impex are available in a wide range of sizes (½” to 12”), pressure classes (150 to 600), and connection types such as flanged, tri-clamp, threaded, and butt-welded ends. Custom designs and diaphragm materials such as EPDM, PTFE, and Viton are also available to suit various application-specific requirements.

Frequently Asked Questions (FAQs)

Q1: What is a diaphragm valve used for?

A1: Diaphragm valves are ideal for controlling clean or corrosive liquids, slurries, and gases in food, pharma, and chemical industries.

Q2: What are the advantages of SS 304 diaphragm valves?

A2: SS 304 provides excellent corrosion resistance, hygiene, and strength, making it suitable for sanitary and chemical processing environments.

Q3: Can you supply diaphragm valves across India?

A3: Yes, we supply to major domestic cities including Mumbai, Delhi, Bengaluru, Hyderabad, Chennai, Kolkata, Pune, Surat, and more.

Q4: Are custom diaphragm materials available?

A4: Yes, we offer EPDM, PTFE, Viton, and Silicone diaphragm options to suit varied chemical and temperature applications.