BIS Certification for Butterfly Valves for General Purposes | IS 13095:1991

Introduction

BIS Certification for Butterfly Valves is an important compliance consideration for manufacturers whose butterfly valves fall under the applicable BIS certification requirements. IS 13095:1991 is titled “Butterfly Valves for General Purposes.”

The standard covers double-flanged and wafer-type butterfly valves, including metal-seated and resilient-seated valves made from materials such as cast iron, ductile iron and carbon steel, as well as lined butterfly valves. The valves may be manually, pneumatically, hydraulically or electrically operated.

The original 1991 standard covers valves up to nominal pressure designations of 4 MPa and Class 300, with nominal sizes from DN 40 to DN 2000, subject to the detailed requirements of the standard.

Important for manufacturers: BIS has subsequently published IS 13095:2020 – Butterfly Valves for General Purposes (First Revision). Therefore, before filing a new BIS application, the manufacturer should verify the latest applicable standard and BIS certification requirements for the specific product.

About Butterfly Valves

A butterfly valve is a quarter-turn valve used to control, regulate or shut off the flow of liquids and gases through a pipeline.

It generally consists of:

Valve body
Disc
Shaft
Seat or lining
Bearings
Operating mechanism
End connections

Butterfly valves are widely used because of their relatively compact design, simple operation and suitability for different industrial pipeline applications.

They may be operated manually or through actuators such as:

Electric actuators
Pneumatic actuators
Hydraulic actuators

IS 13095:1991 specifically recognizes manual, pneumatic, hydraulic and electrical operation.

What is BIS Certification?

BIS Certification is a conformity assessment mechanism administered by the Bureau of Indian Standards (BIS).

Where a product is covered by a compulsory BIS certification requirement, the manufacturer must demonstrate conformity with the applicable Indian Standard and comply with BIS certification conditions before using the BIS Standard Mark.

For manufacturers dealing with regulated industrial valves, determining the correct applicable Indian Standard and current regulatory status is an essential first step.

What is IS 13095:1991?

IS 13095:1991 is the Indian Standard titled:

“Butterfly Valves for General Purposes”

The BIS Product Manual for this standard was prepared for certification under Scheme-I and is intended to guide BIS offices, existing licensees and prospective applicants seeking certification.

The Product Manual identifies:

Product title
Product raw material
Product grouping
Sample requirements
Test equipment
Scheme of Inspection and Testing
Licence scope

The product manual specifies one valve as the sample size.

Scope of IS 13095:1991

IS 13095:1991 covers:

Double-flanged butterfly valves
Wafer-type butterfly valves
Metal-seated butterfly valves
Resilient-seated butterfly valves
Cast iron butterfly valves
Ductile iron butterfly valves
Carbon steel butterfly valves
Lined butterfly valves

The valves may be:

Manually operated
Pneumatically operated
Hydraulically operated
Electrically operated

The standard covers nominal pressure designations up to and including 4 MPa and Class 300 and nominal sizes DN 40 to DN 2000, subject to the standard's detailed provisions.

Products Covered

Depending upon the applicable standard and licence scope, the product category may include:

Double-Flanged Butterfly Valves

Butterfly valves having flanged connections on both sides.

Wafer Butterfly Valves

Valves designed to be installed between pipe flanges.

Metal-Seated Butterfly Valves

Butterfly valves using metallic seating arrangements.

Resilient-Seated Butterfly Valves

Valves incorporating resilient seating materials.

Lined Butterfly Valves

Butterfly valves incorporating lining suitable for the intended service.

Different Operating Arrangements

Manual
Pneumatic
Hydraulic
Electric

The exact product scope should be finalized according to the applicable BIS standard, product design and licence requirements.

IS 13095:1991 and Current Revision – Important Update

This section is very important for SEO and technical accuracy.

Although the requested product page is based on IS 13095:1991, BIS has subsequently issued IS 13095:2020 – Butterfly Valves for General Purposes (First Revision). BIS's later product manual provides licence scope under the 2020 revision.

The 2020 revision's product scope includes materials such as:

Cast iron
Ductile iron
Carbon steel
Stainless steel
Aluminium

It also identifies service applications including:

Tight shut-off
Regulating
Low leakage
Vacuum condition

and nominal sizes from 40 to 2000, nominal pressures from PN 0.25 to PN 4.0, and Class 125, Class 150 and Class 300 designations.

Therefore, a manufacturer should not automatically assume that IS 13095:1991 is the correct standard for a new application. Product applicability should be verified against the latest BIS requirements.

Enforcement / Implementation Status

For a website article, avoid publishing an unsupported statement such as “IS 13095:1991 is currently mandatory for every butterfly valve.”

The BIS records show that:

IS 13095:1991 has a BIS Product Manual.
BIS LIMS continues to show testing facilities for IS 13095:1991.
BIS also lists IS 13095:2020 as the first revision.
Amendment No. 2 to IS 13095:2020 was published in February 2025.

Recommended website wording:

“Manufacturers should verify the latest BIS notification, certification scheme and applicable Indian Standard before applying for certification, particularly because IS 13095:2020 is the subsequent revision of IS 13095:1991.”

This wording is safer and more accurate for a professional BIS consultancy website.

Applicable QCO Details

Before publishing a definitive QCO statement for this product, the manufacturer's exact product category and latest BIS regulatory notification should be verified.

For BIS certification purposes, the applicable requirements may depend on:

Product type
Material
Nominal size
Pressure designation
End connection
Service application
Operating mechanism
Current BIS standard
Applicable regulatory notification

Qualitance India can perform a product applicability assessment before the application is filed.

Who Needs BIS Certification?

The relevant manufacturers may include:

Butterfly valve manufacturers
Industrial valve manufacturers
Pipeline valve manufacturers
Water-treatment valve manufacturers
HVAC valve manufacturers
Process-industry valve manufacturers
Cast iron valve manufacturers
Ductile iron valve manufacturers
Carbon steel valve manufacturers
Valve manufacturers supplying regulated markets

Foreign manufacturers supplying products into India may also need to evaluate the applicable BIS foreign-manufacturer certification route.

Eligibility Criteria

A manufacturer seeking BIS certification should generally have:

Manufacturing premises
Suitable valve manufacturing machinery
Testing facilities or testing arrangements
Quality-control system
Trained technical personnel
Calibrated measuring instruments
Raw-material controls
Manufacturing process controls
Inspection facilities
Product identification system
Test records
Production records
Suitable storage facilities

The exact requirements depend on the applicable BIS certification scheme and standard.

Complete BIS Certification Process

Step 1 – Product Assessment

First, identify the exact butterfly valve manufactured by the applicant.

Step 2 – Standard Applicability

Determine whether the product should be assessed against IS 13095:1991, IS 13095:2020 or another applicable standard.

Step 3 – Product Scope Assessment

Identify:

Valve type
Material
Nominal size
Nominal pressure
Class designation
End connection
Service application
Operation

Step 4 – Factory Assessment

Evaluate the manufacturing facility, machinery, testing equipment and quality-control arrangements.

Step 5 – Documentation

Prepare the BIS application documentation.

Step 6 – Sample Preparation

Prepare the representative valve/sample according to BIS requirements.

Step 7 – Laboratory Testing

Testing is carried out against the applicable requirements.

Step 8 – BIS Application

Submit the application and supporting documents through the applicable BIS procedure.

Step 9 – Application Scrutiny

BIS reviews the application and technical information.

Step 10 – Factory Inspection

BIS may assess the manufacturing facility and production controls.

Step 11 – Testing & Verification

Product testing and factory verification are completed as applicable.

Step 12 – Observation Closure

Any observations or non-conformities are addressed.

Step 13 – Licence Grant

After satisfactory completion of the applicable requirements, BIS may grant the licence.

Step 14 – ISI Mark Compliance

The manufacturer uses the BIS Standard Mark according to the licence conditions.

Step 15 – Ongoing Compliance

The manufacturer continues to maintain quality and testing requirements.

Required Documents

Typical documentation may include:

Company registration documents
Factory registration documents
Factory address proof
Factory layout
Manufacturing process flow chart
Machinery list
Testing equipment list
Calibration certificates
Product drawings
Product specifications
Valve datasheets
Raw-material details
Material certificates
Quality-control plan
Internal test reports
Product photographs
Packaging details
Marking details
Trademark documents
Authorized signatory documents
BIS application forms
Declarations and undertakings

The final document list should be prepared according to the applicable BIS standard and certification route.

Testing Requirements

BIS LIMS currently provides testing information for IS 13095:1991. The listed test areas include several important performance and dimensional requirements.

Important testing areas include:

Valve End Connections

Verification of the applicable end connection requirements.

Service Applications

Assessment according to the specified service application.

Nominal Sizes

Verification of applicable nominal valve sizes.

Nominal Pressure

Verification of pressure designation.

Class Designation

Applicable class designation requirements.

Face-to-Face Dimensions

Verification of required dimensions.

Bodies

Evaluation of valve body requirements.

Disc and Shaft

Assessment of disc and shaft requirements.

Seating and Linings

Verification of seating and lining requirements.

Bearings

Applicable bearing requirements are evaluated.

Operation

Operation of the valve is checked.

Performance Testing

Performance testing is an important part of the applicable product requirements.

Body Test

The valve body is subjected to the applicable test requirements.

Seat Test

Seat leakage/performance requirements are evaluated.

Disc Strength Test

Disc strength is evaluated according to the applicable requirement.

BIS LIMS specifically lists performance testing, body test, seat test and disc strength test among the testing scope for IS 13095:1991.

BIS Testing Laboratory

BIS LIMS currently lists laboratories having testing scope for IS 13095:1991.

For example, BIS LIMS shows testing facilities for this standard at BIS Central Laboratory and other laboratories.

The current LIMS information also shows:

A listed testing charge of ₹3,300 excluding taxes for one IS 13095:1991 scope at certain listed facilities.
Unique Test House LLP lists IS 13095:1991 for butterfly valves up to 500 mm with a displayed charge of ₹4,500 excluding taxes.

These figures should not be presented as the universal BIS testing cost, because laboratory charges can vary based on scope, exclusions, size, testing requirements and laboratory.

BIS Certification Cost

The total BIS certification cost depends on:

BIS application fees
Laboratory testing charges
Inspection expenses
Product scope
Number of variants
Valve sizes
Pressure classes
Material
Testing requirements
Documentation
Retesting, if necessary
Consultancy charges

Therefore, there is no single fixed BIS certification cost applicable to every butterfly valve manufacturer.

Factory Inspection Process

During the factory assessment, BIS may examine:

Manufacturing Machinery

Valve body, disc, shaft and assembly manufacturing facilities.

Raw Materials

Incoming material identification and quality control.

Production Process

Manufacturing and assembly controls.

Testing Facilities

Availability of required testing and measuring equipment.

Calibration

Calibration status of relevant instruments.

Product Inspection

Inspection of finished butterfly valves.

Quality Records

Production and testing records.

Traceability

Identification of raw materials and finished products.

Marking

Product marking and BIS Standard Mark arrangements.

Common Reasons for Application Rejection or Delay

Wrong standard selected
Incorrect product scope
Incorrect valve classification
Incomplete documentation
Failed performance test
Failed body test
Failed seat test
Disc strength non-conformity
Dimensional non-conformity
Incorrect pressure designation
Inadequate testing equipment
Calibration problems
Poor raw-material control
Incomplete inspection records
Incorrect product marking
Factory not ready for inspection
Failure to close BIS observations

Timeline

The certification timeline depends on:

Product readiness
Factory readiness
Documentation
Laboratory availability
Testing results
BIS application scrutiny
Inspection scheduling
Observation closure

Therefore, manufacturers should obtain a product-specific assessment before committing to a certification timeline.

Benefits of BIS Certification

Regulatory Compliance

Supports compliance with applicable BIS requirements.

Product Quality

Helps establish systematic product-quality controls.

Customer Confidence

Improves confidence among industrial customers and procurement teams.

Market Acceptance

Supports access to markets where BIS compliance is required.

Brand Credibility

The BIS Standard Mark can strengthen product credibility when used under a valid licence.

Quality Control

Encourages documented inspection and testing procedures.

Why Choose Qualitance India?

Qualitance India provides professional BIS Certification Consultancy for industrial and engineering products.

For butterfly valve manufacturers, our support can include:

✓ Product Applicability Assessment
✓ IS 13095 Standard Assessment
✓ Current Revision Verification
✓ Product Scope Assessment
✓ Documentation Support
✓ Testing Laboratory Coordination
✓ Sample Preparation Guidance
✓ BIS Application Assistance
✓ Factory Inspection Preparation
✓ Quality-Control Documentation
✓ Observation Closure Support
✓ ISI Mark Guidance
✓ End-to-End BIS Certification Consultancy

Contact Qualitance India

Phone: +91-9310-615-170
Email: info@qualitanceindia.com
Website: qualitanceindia.com

QUALITANCE INDIA – IMPROVING QUALITY AND COMPETENCE

Step-by-Step Flow Chart – Text Format

Butterfly Valve Product Identification
↓
Material & Design Assessment
↓
Applicable IS Standard Verification
↓
IS 13095 Scope Assessment
↓
Factory Readiness Assessment
↓
Documentation Preparation
↓
Sample Preparation
↓
Laboratory Testing
↓
BIS Application Submission
↓
Application Scrutiny
↓
Factory Inspection
↓
Observation Closure
↓
BIS Licence Grant
↓
ISI Mark Compliance
↓
Ongoing Compliance

25 SEO FAQs

1. What is IS 13095:1991?

IS 13095:1991 is the Indian Standard titled “Butterfly Valves for General Purposes.”

2. What products are covered under IS 13095:1991?

The standard covers double-flanged and wafer-type metal-seated, resilient-seated cast iron, ductile iron, carbon steel and lined butterfly valves for general purposes.

3. What types of operation are covered?

The standard covers manually, pneumatically, hydraulically and electrically operated valves.

4. What sizes are covered under IS 13095:1991?

The original standard covers nominal sizes from DN 40 to DN 2000, subject to its detailed requirements.

5. What pressure range is covered?

The original standard covers nominal pressure designations up to and including 4 MPa and Class 300.

6. Is BIS Certification required for butterfly valves?

The requirement depends on the applicable regulatory framework and product category. Manufacturers should verify the current BIS/QCO applicability before applying.

7. Is IS 13095:1991 still the latest standard?

No. BIS has subsequently published IS 13095:2020 – Butterfly Valves for General Purposes (First Revision).

8. What is IS 13095:2020?

It is the first revision of the butterfly-valve standard and provides updated product requirements and licence-scope parameters.

9. What tests are required for butterfly valves?

Testing can include dimensional checks, body testing, seat testing, performance testing and disc strength testing, along with other applicable requirements.

10. Is body testing required?

Yes, body testing is included in the BIS testing scope for IS 13095:1991.

11. Is seat testing required?

Yes, seat testing is included in the listed BIS testing scope.

12. Is disc strength testing required?

Yes, disc strength testing is included in the applicable testing scope.

13. Is performance testing required?

Yes, performance testing is listed in the BIS LIMS testing scope for IS 13095:1991.

14. What sample is required for BIS certification?

The BIS Product Manual for IS 13095:1991 specifies one valve as the sample size.

15. What materials are covered?

The 1991 standard covers cast iron, ductile iron and carbon steel valves and lined valves within its scope.

16. What are wafer butterfly valves?

Wafer butterfly valves are designed to be accommodated between pipework flanges.

17. What are double-flanged butterfly valves?

These are butterfly valves having flanged end connections on both sides.

18. What is BIS testing cost for IS 13095:1991?

Current BIS LIMS listings show different charges depending on the laboratory and testing scope. For example, some listed scopes show ₹3,300 or ₹4,500 excluding taxes.

19. Is the laboratory charge the complete BIS certification cost?

No. Testing is only one component. BIS application, inspection, documentation and other applicable expenses may also apply.

20. What documents are required for BIS certification?

Documents generally include factory details, manufacturing process, machinery, product specifications, testing facilities, calibration records and quality-control documents.

21. Is factory inspection required?

Factory assessment may be part of the applicable BIS certification process.

22. Can foreign manufacturers obtain BIS certification?

Eligible foreign manufacturers can apply under the applicable BIS foreign-manufacturer certification framework.

23. Can one BIS licence cover all butterfly valve sizes?

The licence scope depends on BIS grouping and the approved scope. Different sizes, pressure classes, materials and configurations may need to be specifically covered.

24. What is the BIS Standard Mark?

The BIS Standard Mark is used by a licensee according to the conditions of the applicable BIS licence.

25. Can Qualitance India help with IS 13095 certification?

Yes. Qualitance India can support applicability assessment, documentation, testing coordination, BIS application and factory inspection preparation.

FAQ Schema Content

Use these FAQs in the website FAQ section:

What is IS 13095:1991?
What products are covered under IS 13095:1991?
Is BIS Certification required for Butterfly Valves?
What is IS 13095:2020?
Is IS 13095:1991 still applicable?
What tests are required for Butterfly Valves?
Is body testing required?
Is seat testing required?
Is disc strength testing required?
Is performance testing required?
What sample is required?
What documents are required?
What is the BIS testing cost?
Is factory inspection required?
Can foreign manufacturers obtain BIS Certification?
Can one licence cover multiple sizes?
What is a wafer butterfly valve?
What is a double-flanged butterfly valve?
What is the BIS licence process?
How can Qualitance India help?

Service Schema Suggestion

Service Name: BIS Certification Consultancy for Butterfly Valves

Service Type: BIS Certification Consultancy

Applicable Standard: IS 13095:1991 / applicable current revision

Product: Butterfly Valves for General Purposes

Provider: Qualitance India

Area Served: India

Description: Professional BIS Certification Consultancy for Butterfly Valves, including standard applicability assessment, documentation, testing coordination, BIS application support and factory inspection preparation.

Organization Schema Suggestion

Organization Name: Qualitance India

Tagline: Improving Quality and Competence

Phone: +91-9310-615-170

Email: info@qualitanceindia.com

Website: qualitanceindia.com

Breadcrumb Schema Suggestion

Home → BIS Certification → Industrial Valves → Butterfly Valves → IS 13095:1991

Article Schema Suggestion

Article Type: Article / BlogPosting

Headline: BIS Certification for Butterfly Valves for General Purposes – IS 13095:1991

Author: Qualitance India

Publisher: Qualitance India

Article Section: BIS Certification / Industrial Valve Certification

Keywords: BIS Certification for Butterfly Valves, IS 13095:1991, Butterfly Valve BIS Licence, IS 13095 Testing

Internal Linking Strategy

Is blog ko website ke following pages se internally link karein:

BIS Certification Consultancy
BIS Certification Process
BIS Certification Cost
BIS Certification Documents
BIS Product Testing
BIS Factory Inspection
ISI Mark Certification
Industrial Product BIS Certification
QCO Compliance Consultancy
Foreign Manufacturer BIS Certification
Valve Certification
Engineering Product Certification

Recommended Anchor Text

BIS Certification Process
BIS Certification Cost
BIS Testing Services
BIS Factory Inspection
ISI Mark Certification
Industrial Valve Certification
BIS Licence for Manufacturers
Product Testing Services
QCO Compliance Consultancy

External Authority References

Website ke E-E-A-T ke liye official BIS references use karein:

BIS Product Manual – IS 13095:1991
BIS Product Manual for IS 13095:1991

BIS Standard Preview – IS 13095:1991
BIS Standard Preview for IS 13095:1991

BIS LIMS – IS 13095 Testing Information
BIS LIMS Testing Information

BIS Product Manual – IS 13095:2020
BIS Product Manual for IS 13095:2020

Related BIS Services

BIS Certification for Butterfly Valves
BIS Certification for Industrial Valves
BIS Certification for Gate Valves
BIS Certification for Ball Valves
BIS Certification for Check Valves
BIS Certification for Globe Valves
BIS Certification for Water Valves
BIS Product Testing
BIS Factory Inspection Assistance
BIS Documentation Support
ISI Mark Certification
QCO Compliance Consultancy

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IS 13095:1991 vs IS 13095:2020 – Complete Difference
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Strong Lead Generation CTA

Need BIS Certification for Butterfly Valves?

Are you a Butterfly Valve Manufacturer, Industrial Valve Manufacturer, Pipeline Equipment Manufacturer or Engineering Product Manufacturer looking for BIS Certification?

Qualitance India can assist you with the complete BIS certification process.

Our Support Includes:

✓ Product Applicability Assessment
✓ IS 13095 Standard Assessment
✓ Current Revision Verification
✓ Product Scope Assessment
✓ Documentation Support
✓ Laboratory Testing Coordination
✓ Sample Preparation Guidance
✓ BIS Application Assistance
✓ Factory Inspection Preparation
✓ Quality-Control Documentation
✓ Observation Closure Support
✓ ISI Mark Guidance

Contact Qualitance India

📞 +91-9310-615-170
📧 info@qualitanceindia.com
🌐 qualitanceindia.com

QUALITANCE INDIA – IMPROVING QUALITY AND COMPETENCE

SEO-Optimized Conclusion

BIS Certification for Butterfly Valves for General Purposes as per IS 13095:1991 involves evaluating the applicable valve design, material, dimensions, pressure designation, end connection, operation and performance requirements.

IS 13095:1991 covers a broad range of general-purpose butterfly valves, including double-flanged and wafer-type valves, metal-seated and resilient-seated valves, cast iron, ductile iron, carbon steel and lined valves.

The BIS Product Manual identifies important certification elements including product grouping, sample requirements, testing equipment and the Scheme of Inspection and Testing.

However, because IS 13095:2020 is the subsequent first revision, manufacturers should verify the current applicable standard before submitting a fresh BIS application. BIS has also published amendments to the 2020 standard, making current applicability verification particularly important.

For professional assistance with BIS Certification for Butterfly Valves, IS 13095 applicability, laboratory testing, documentation, BIS application and factory inspection preparation, Qualitance India can provide end-to-end consultancy support.