Gate Valve – Ductile Iron, PN-16, Non Rising Stem
- Body
- Ductile Iron
- Rating
- PN-16
- Sizes
- Sizes DN50–DN700
ISO 9001:2015 certified quality management system
Industrial valves manufactured in Lahore
Gate, globe, check, butterfly, air release, ball and balancing valves, strainers and flanges, in cast iron, ductile iron and carbon steel from PN-10 to Class 300.
Datasheets for every product
Specifications you can check before you buy
Materials, standards and dimensions from GMC’s own datasheets, with the original PDF on every product page.
310+
Projects
Up to 48"
Valve sizes manufactured
61
Products with published datasheets
PN 10–40 · Class 125–300
Pressure ratings
Product range
All 61 products
Valves, strainers and flanges for every line
Each category lists GMC's datasheets with materials, standards and dimensions. Choose a category to filter by rating, material and size.
14
Gate Valves
Isolation valves with a wedge that moves across the flow path, for fully open or fully closed service.
11
Globe Valves
Valves with a disc that closes onto a seat, suited to throttling and regulating flow.
13
Non-Return (Check) Valves
Non-return valves that let flow pass in one direction and close automatically to prevent backflow.
10
Strainers
Y-type and basket strainers that catch debris before it reaches pumps, valves and meters.
2
Butterfly Valves
Quarter-turn valves with a rotating disc, offered lever operated or gear operated.
3
Air Release & Air Vent Valves
Air release, air vacuum combination and air vent valves that remove trapped air from pipelines.
2
Ball Valves
Two-piece threaded ball valves with CF8 body and ball for quarter-turn isolation.
2
Balancing Valves
Balancing valves with a position indicator for setting flow in heating and cooling circuits.
1
Fire Hydrants
Ductile iron pillar hydrants with landing valves for fire fighting water supply.
3
Flanges
Raised face, blind and slip-on flanges for connecting valves to pipes and fittings.
About GMC Valves
Quality valves engineered, machined and pressure-tested in Lahore
General Manufacturing Concern (Pvt.) Ltd. manufactures industrial valves, strainers and flanges for water, wastewater, oil, gas and steam service. Production covers casting, machining, assembly and pressure testing, under a quality management system certified to ISO 9001:2015.
- Cast Iron
- Ductile Iron
- Carbon Steel (WCB)
- Bronze
- Brass
- Stainless Steel
Class 125, 150, 300 · PN 10, 16, 25 & 40 · API, BSS, AWWA, ISO, ASME & EN standards
More about GMC-
01
Casting
Bodies, bonnets and discs in cast iron, ductile iron and cast steel.
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02
Machining
Seats, faces and flanges machined to the datasheet dimensions.
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03
Assembly
Stems, seat rings, packing and operators fitted to the specified materials.
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04
Pressure testing
Tested to the standards listed on each datasheet, such as API 598, BS 6755 or EN 12266-1.
From the catalogue
Products buyers ask about
A selection from across the range. Every product page includes its specification tables and the original datasheet.
Non-Return Valve – Cast Iron, PN-16, Swing Type
- Body
- Cast Iron
- Rating
- PN-16
- Sizes
- Sizes DN50–DN700
Butterfly Valve – PN-16 / Class 150, Lever Operated
- Body
- Cast Iron
- Rating
- PN-16 / Class 150
- Sizes
- Sizes DN40–DN700
Air Vacuum Combination Valve – PN-16 / Class 150
- Body
- Cast Iron
- Rating
- PN-16 / Class 150
- Sizes
- Sizes DN50–DN300
Quality assurance
ISO 9001:2015 certified quality management system
General Manufacturing Concern (Pvt.) Ltd. holds a certificate of registration to ISO 9001:2015 issued by American International Standards LLC (AIS). It covers the manufacture, assembly, inspection, testing and supply of valves and flanges.
- Certificate no.
- AISMC21011050Q
- Issued
- 12 Mar 2026
- Valid until
- 12 Mar 2027
ISO 9001 certifies the company's quality management system. It is not a certification of individual products.
View certificate details
Industries
Where GMC valves are specified
Applications listed on GMC's datasheets and in the scope of its ISO 9001 certificate.
Water Supply & Distribution
Isolation, non-return, air release and strainer valves for water mains, pumping stations and distribution networks.
57 products listed
Wastewater & Raw Water
Valves listed by GMC for wastewater and raw water lines, including gate, non-return and strainer types.
52 products listed
Oil, Gas & Petroleum
Gate, globe, check valves and strainers whose datasheets list oil, gas or refinery service.
52 products listed
Steam Systems
Valves whose GMC datasheets list steam among their applications, including bellow-sealed globe valves.
33 products listed
HVAC & Building Services
Valves for heating and chilled-water circuits, including balancing and air release valves.
19 products listed
Fire Fighting
Pillar hydrants with landing valves for fire fighting water supply.
2 products listed
Cement Plants & Sugar Mills
Cement plants and sugar mills are named in the scope of GMC’s ISO 9001:2015 certificate.
How to order
From enquiry to written quotation
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01
Choose products
Browse by category, filter by rating and material, or compare up to four products side by side.
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02
Send your requirements
Add sizes, ratings and quantities on the quote form. Your selected products come with you.
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03
GMC reviews the request
The sales team checks your requirements against the datasheets and asks if anything needs clarifying.
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04
Receive a written quotation
You receive a quotation with prices and terms. Nothing is ordered until you accept it.
Questions buyers ask
How do I request a quotation?
Use the Get a Quote form, or the quote button on any product page, which adds that product for you. Tell us the size, pressure rating, quantity and any material or testing requirements. GMC will reply with a written quotation.
Can I request a quote for several products at once?
Yes. Add products to the comparison list, then choose "Request a quote for these products", or add several lines on the quotation form.
Is a website quote request an order?
No. A request is an enquiry only. Prices, delivery and terms are confirmed in GMC’s written quotation, and an order is placed only when you accept it.
What do PN and Class mean?
PN (for example PN-16) is the European pressure designation used with EN and BS flanges; PN-16 corresponds to 16 bar at reference temperature. Class (for example Class 150) is the ASME designation used with ASME B16.5 flanges. Allowable working pressure depends on the material and temperature, so always check the rating for your conditions.
Where do the specifications on this website come from?
Every specification comes from GMC’s published datasheets. The original PDF is attached to each product. Where duplicate datasheets disagree or a value looks like a misprint, the value is marked for confirmation.
What do EN-GJL-250 and EN-GJS-500 mean?
They are European material designations. EN-GJL-250 is grey cast iron with a minimum tensile strength of 250 MPa. EN-GJS-500 is spheroidal graphite (ductile) iron with a minimum tensile strength of 500 MPa.
