Manufacturer, Supplier & Exporter of Flanged Pump Connectors

Flanged Pump Connectors are essential components in modern piping systems, designed to connect pumps with pipework securely and efficiently. These connectors feature flanged ends that allow for easy assembly, disassembly, and maintenance. By providing a robust connection, flanged pump connectors help to reduce vibration, absorb thermal expansion, and prevent leakage—especially in systems that experience high pressure, temperature changes, or dynamic loads..

Riddhi Siddhi Impex is a trusted manufacturer and supplier of high-quality Flanged Pump Connectors in India. Based in Mumbai, the company has earned a solid reputation for delivering precision-engineered industrial products, including flanges, fittings, sheets, and fasteners. Their flanged connectors are manufactured in compliance with both Indian and international standards, ensuring durability, dimensional accuracy, and performance under demanding conditions.

RThese connectors are available in a variety of materials, including stainless steel (SS304, SS316), carbon steel, duplex and super duplex steel, and special alloys like Inconel or Monel. This material flexibility enables Riddhi Siddhi Impex to cater to a wide range of industrial applications such as oil and gas, chemical processing, water treatment, HVAC systems, and power generation. The company also offers customized solutions based on client specifications.

Riddhi Siddhi Impex operates from two key manufacturing units located in Palghar and Taloja, Maharashtra, equipped with modern machinery and quality control systems. With a strong logistical framework, they can efficiently serve domestic markets across India, ensuring timely delivery and reliable after-sales support. Their expertise in both standard and non-standard flanged connectors makes them a preferred choice for engineers and procurement professionals nationwide.

As a domestic supplier, Riddhi Siddhi Impex has a widespread customer base across major Indian cities. These include Mumbai, Delhi, Bengaluru (Bangalore), Hyderabad, Chennai, Kolkata, Pune, Ahmedabad, and Surat, among others. They have also established strong supply chains in industrial cities like Vadodara, Rajkot, Nagpur, Indore, Bhopal, and Jaipur, ensuring consistent availability of flanged pump connectors for industries in these regions..

Flanged Pump Connector Specification Sheet

Chemical Composition & Equivalent Grades

Material Grade	C (max)	Si (max)	Mn	Cr	Ni	Mo	Other Elements	Typical Applications
SS 304 / EN 1.4301 / ASTM A182 F304	0.08%	0.75%	1.5–2.0%	18–20%	8–10.5%	—	N ~0.10%, P & S low	General purpose, good corrosion resistance
SS 316L / EN 1.4404 / ASTM A182 F316L	0.03%	0.75%	1.5–2.5%	16–18%	10–14%	2–3%	Mo improves corrosion resistance, especially against chlorides	Seawater, chemical, acidic environments
SS 321 / EN 1.4541 / ASTM A182 F321	0.08%	0.75%	1.5–2.0%	17–19%	9–12%	—	Ti stabilized, good for high temperature	High temperature steam, burners
Carbon Steel (ASTM A105 / A105N)	0.35% max	0.35% max	0.60–1.05%	—	—	—	P, S low; sometimes small amount of Mn, Si	Flanges in low‐/medium temperature pressure service
Duplex Stainless (e.g. UNS S32205 / SS 2205)	0.03–0.04%	0.7–0.9%	1.4–2.0%	22–23%	4.5–6.5%	3.0–3.5%	N ~0.14–0.20%, Mo, low C	Offshore, high corrosion, chloride environments

Mechanical Properties

Material Grade	Minimum Tensile Strength	Minimum Yield Strength (0.2% Proof)	Elongation in 50 mm (2 in)	Hardness (Typical / Max)
SS 304	520‑700 MPa approx.	≈ 205 MPa	≥ 40%	Rockwell B80, Brinell ~90–200
SS 316L	520‑700 MPa	≈ 170‑205 MPa	≥ 40%	slightly lower hardness, same class
SS 321	520‑700 MPa	≈ 205 MPa	≥ 40%	resists grain growth at high temperature
Carbon Steel A105	485‑620 MPa	≈ 250‑350 MPa	≥ 22‑30%	Brinell / Rockwell values accordingly
Duplex 2205	≥ 620‑700 MPa	≈ 450‑550 MPa	≥ 25‑30%	higher hardness, but still ductile

Dimension Chart (Flange Related, Typical ANSI / ASME B16.5 Classes)

Nominal Pipe Size (NPS / DN)	Class 150 – OD (Outer Diameter)	Class 150 – Bolt Circle Diameter (BCD)	Class 150 – No. & Diameter of Bolts	Flange Thickness (Class 150)	Raised Face / Raised Face Height
½″ (DN15)	3.00 in	2.38 in	4 × ⅝‑11 UNC	0.38 in	0.06 in
1″ (DN25)	4.50 in	3.75 in	4 × ¾‑10 UNC	0.50 in	0.06 in
2″ (DN50)	6.00 in	5.00 in	8 × ⅝‑11 UNC	0.69 in	0.06 in
4″ (DN100)	9.00 in	7.50 in	8 × ⅞‑9 UNC	0.88 in	0.06 in
6″ (DN150)	11.00 in	9.00 in	8 × 1‑8 UNC	1.00 in	0.06 in

Equivalent Standards & Other Types

Local / International Standard	Equivalent Standard
ASME / ANSI B16.5	EN 1092‑1, ISO 7005‑1
ASTM A182 (SS / Alloy Steel Flanges)	DIN / EN equivalents, e.g. EN 10222 / EN 1092
ASTM A105 (Forged Carbon Steel)	EN 10222‑1, PN Class carbon steel flanges
ASTM F304 / F316L / F321	EN 1.4301 / EN 1.4404 / EN 1.4541
Duplex 2205	UNS S32205, EN 1.4462

Other Types of Flanged Pump Connectors

Type	Description / Use Case
Fixed Flange Pump Connector	Both ends are flanged; rigid in flange orientation; used where alignment is assured.
Swivel Flange Pump Connector	One end flanged, other flange can rotate; helps ease alignment during installation.
Flexible / Corrugated Hose with Flanged Ends	Absorbs vibration, thermal expansion; used in pumps subject to movement / vibration. Typical hose: stainless steel braided or corrugated. :contentReference[oaicite:0]{index=0}
Single Braid vs Double Braid	Double braid gives more strength, better pressure rating; single braid uses less material, lower cost. :contentReference[oaicite:1]{index=1}

The company’s products are also distributed to cities such as Kanpur, Lucknow, Agra, Varanasi, Amritsar, and Chandigarh in Northern India. Their efficient logistics and wide distributor network allow them to serve customers in Mysuru (Mysore), Udaipur, Jodhpur, Visakhapatnam, Coimbatore, Madurai, Kochi, Thiruvananthapuram, and Mangalore, covering Southern and Eastern India as well. Industrial hubs in Maharashtra like Nashik, Kolhapur, Chandrapur, and Akola also benefit from their supply services.

Frequently Asked Questions (FAQs)

Q1: What temperature and pressure ranges are typical for flanged pump connectors?

A: Typical working pressures for flexible flanged pump connectors range from approximately 150 psi to 500–600 psi (≈10–35 bar), depending on size, braid, material, and temperature. As temperature increases, pressure rating decreases. For example, stainless steel flexible hose connectors may maintain full pressure at around 70°F (≈21–25°C) but drop in allowable pressure at elevated temperatures.

Q2: Which types of flanges / standards should I choose for compatibility?

A: This depends on the pipe or pump specifications. Common flange standards include ANSI/ASME B16.5, B16.47, EN 1092‑1, and ISO 7005. Always choose a standard that matches or is compatible with the mating flanges in your system.

Q3: What materials are used and how do I choose?

A: Stainless steels such as 304, 316L, and 321 are commonly used for corrosion resistance. Carbon steel (e.g., ASTM A105) is suitable for general applications. Duplex stainless is ideal for aggressive environments like marine or high-chloride exposure. Selection depends on fluid type, temperature, corrosion conditions, and budget. Also consider the braid type and hose construction.

Q4: Can standard dimensions be customized?

A: Yes. Manufacturers often offer custom lengths, flange drilling patterns, special flange faces, and materials to suit OEM or project-specific needs. Flexible hose sections are particularly customizable.