
Diaphragm Valves Supplier in Numaligarh
Numaligarh Refinery Limited (NRL) — co-owned by Bharat Petroleum, Oil India Limited, and the Government of Assam — operates a 3 Mtpa refinery currently undergoing a major expansion to 9 Mtpa with integrated petrochemical units including a wax and bio-bitumen plant; NRL's greenfield expansion projects require API 6D ball valves, API 600 gate and globe valves, and check valves across all ISBL and OSBL units; Vajra Industrial Solutions supplies IBR-certified steam valves, API 6D Class 300–600 valves, and full API 598 test-certified valves for NRL expansion procurement, with delivery to Assam via road and rail from Vadodara within 7–10 business days.
Diaphragm valves are the standard for Numaligarh's Oil Refining applications. We supply sanitary SS316L diaphragm valves with EPDM, PTFE, and natural rubber diaphragms for Assam clients.
API 6D Certified
Ball, Gate, Globe, Check
ASME B16.34
Pressure-Temperature Rated
ISO 9001:2015
Quality Management
Fast Delivery
to Numaligarh
Diaphragm Valves — Available in Numaligarh
All diaphragm valves below are available for delivery to Numaligarh, Assam. Each type is available in multiple materials, pressure classes, and end connection standards. Standard delivery to Numaligarh takes 3–7 business days. Express dispatch options are available for urgent project timelines and plant shutdowns.

Weir Type Diaphragm Valve
Raised weir design for precise flow control and tight shut-off in chemical applications.
Pressure Rating: PN10 / PN16
Standards: BS 5156, ISO 5208

Straight-Through Diaphragm Valve
Full-bore design for slurry and viscous media with minimal flow restriction.
Pressure Rating: PN6 / PN10
Standards: BS 5156
Delivery of Diaphragm Valves to Numaligarh
Standard delivery to Numaligarh takes 3–7 business days. Express dispatch options are available for urgent project timelines and plant shutdowns.
Stock Items
Same/next day dispatch from Vadodara
Custom Orders
2–6 weeks depending on specification
Emergency Supply
Priority handling for plant shutdowns
We also supply to nearby areas: Numaligarh Refinery Limited (NRL) — 3 Mtpa expanding to 9 Mtpa, OIL (Oil India Limited) Duliajan fields, IGGL Indradhanush Gas Grid (northeast India), Paradip–Numaligarh pipeline (HPCL-Assam Accord), BPCL–BRPL Guwahati Refinery supply chain.
Frequently Asked Questions
Diaphragm Valves supply in Numaligarh — ordering, delivery & compliance
Do you supply diaphragm valves in Numaligarh?+
Yes. Vajra Industrial Solutions is a leading supplier of diaphragm valves in Numaligarh, Assam. We supply to Oil Refining, Petrochemical, Natural Gas Pipeline plants and projects across Assam. Numaligarh Refinery Limited (NRL) — co-owned by Bharat Petroleum, Oil India Limited, and the Government of Assam — operates a 3 Mtpa refinery currently undergoing a major expansion to 9 Mtpa with integrated petrochemical units including a wax and bio-bitumen plant; NRL's greenfield expansion projects require API 6D ball valves, API 600 gate and globe valves, and check valves across all ISBL and OSBL units; Vajra Industrial Solutions supplies IBR-certified steam valves, API 6D Class 300–600 valves, and full API 598 test-certified valves for NRL expansion procurement, with delivery to Assam via road and rail from Vadodara within 7–10 business days.
What types of diaphragm valves are available in Numaligarh?+
We supply Weir Type Diaphragm Valve, Straight-Through Diaphragm Valve — all available for delivery to Numaligarh. Each type is available in multiple materials (CS, SS304, SS316, Duplex, Alloy Steel) and pressure classes from PN10 to Class 2500.
What certifications do your diaphragm valves carry?+
All our diaphragm valves comply with API 6D, ASME B16.34, ISO 9001:2015, and relevant standards. We provide full documentation including material test reports, hydrostatic test certificates, and dimensional inspection reports. Key standards: BS 5156, ISO 5208.
How fast can you deliver diaphragm valves to Numaligarh?+
Standard delivery to Numaligarh takes 3–7 business days. Express dispatch options are available for urgent project timelines and plant shutdowns.
What is the minimum order quantity for diaphragm valves to Numaligarh?+
There is no minimum order quantity. We supply single valves for maintenance requirements as well as bulk orders for large EPC and plant projects in Numaligarh. Emergency orders for plant shutdowns are handled on priority.
How do I get a quote for diaphragm valves in Numaligarh?+
Submit your specifications via our RFQ form, email sales@vajravyuh.com, or WhatsApp +91-9979774557. Please include: valve type, size (NPS/DN), pressure class (ANSI/PN), material, end connections, and quantity. We respond within 24 hours with competitive pricing.
Need Diaphragm Valves in Numaligarh?
Share your specifications and get a competitive quote within 24 hours. We supply to Oil Refining and all industrial sectors in Assam.