What is GGG40 material in knife gate valves?

GGG40 is a ductile iron (also called nodular cast iron or spheroidal graphite iron) grade per DIN EN 1563. It has minimum tensile strength of 400 MPa and elongation of 15%. GGG40 is equivalent to ASTM A536 60-40-18. It offers good strength, ductility, and corrosion resistance at lower cost than steel. Widely used for valve bodies, pump casings, and pipe fittings.

What is wafer type knife gate valve?

A wafer type knife gate valve is designed to be sandwiched between two pipe flanges using through-bolts. It has no flanges of its own, making it lighter, more compact, and more economical than flanged or lug type valves. Wafer knife gate valves are suitable for PN10 and PN16 flange ratings. They are the most common configuration for knife gate valves in wastewater and slurry applications.

What is AUMA actuator for knife gate valve?

AUMA is a leading German manufacturer of electric actuators for industrial valves. The AUMA actuator offered with this knife gate valve operates on 24V DC power supply with ON-OFF control and proximity sensors for position feedback. It provides automated open/close operation, remote control capability, and position indication. AUMA actuators are known for reliability, IP67/IP68 protection, and long service life.

What is EPDM bi-directional seat in knife gate valve?

EPDM (Ethylene Propylene Diene Monomer) bi-directional seat means the valve can seal against flow from both directions. The EPDM rubber seat provides: (1) Bubble-tight shut-off in both flow directions, (2) Good chemical resistance to water and wastewater, (3) Temperature range -40°C to +120°C, (4) Leakage Class IV performance. Bi-directional seating eliminates the need to install the valve in a specific flow direction.

Slurry & Wastewater

Knife Gate Valve – PN10, Wafer Type

SUPREME Make Knife Gate Valve – Wafer type, PN10 pressure rating. GGG40 (Ductile Iron) body with SS 304 knife/gate. EPDM soft seated, bi-directional. Leakage Class IV. Design per MSS SP-81. Available in DN100, DN150, DN200. Manual hand wheel or AUMA electric actuator (24V DC, ON-OFF with proximity sensors).

Quick Summary

Knife Gate Valve = Valve with sharp-edged blade that cuts through thick media for shut-off. Ideal for slurry, wastewater, pulp, mining. Wafer type = sandwiched between flanges (compact, lightweight). GGG40 body for strength + SS304 knife for corrosion resistance + EPDM seat for bubble-tight shut-off. Prices from ₹9,737 (DN100) to ₹19,838 (DN200). AUMA actuator option adds ₹25,000.

Knife Gate Valve PN10 Wafer Type GGG40 SS304 EPDM

In Stock AUMA Option Export Ready

Key Specifications

Type: Knife Gate – Wafer

Pressure Rating: PN10

Body Material: GGG40

Knife / Gate: SS 304

Seat: EPDM Bi-directional

Leakage Class: Class IV

Design Standard: MSS SP-81

Sizes: DN100, DN150, DN200

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Export Ready: We export to UAE, Middle East, Africa, and Asia. Complete documentation including MTCs, test reports, and GAD available.

Price Schedule

Manual Hand Wheel Operated

Size	Rating	Body	Knife	Seat	Price (INR/pc)
DN100 (4")	PN10	GGG40	SS 304	EPDM	₹9,737
DN150 (6")	PN10	GGG40	SS 304	EPDM	₹12,194
DN200 (8")	PN10	GGG40	SS 304	EPDM	₹19,838

AUMA Actuator Operated (24V DC, ON-OFF + Proximity Sensors)

Size	Rating	Valve (INR)	AUMA Actuator (INR)	Total per PC (INR)
DN100 (4")	PN10	₹9,737	₹25,000	₹34,737

All prices Ex-Works Ahmedabad. GST extra. Delivery: 2-3 weeks from PO & drawing approval.

Bill of Material (MOC)

Sr.	Component	Material
01	Body	GGG40 (Ductile Iron)
02	Gate / Knife	SS 304
03	Gland Packing	EPDM / PTFE
04	Gland Busher	SS 304
05	Shaft / Stem	SS 304
06	Yoke	Mild Steel (MS), Epoxy Coated
07	Sleeve	Gun Metal (GM)
08	Hand Wheel	SGI (Spheroidal Graphite Iron)
09	Fasteners	MS / SS as applicable
10	Actuator (Optional)	AUMA, 24V DC, ON-OFF + Proximity Sensors

Technical Specifications

Valve Type	Knife Gate Valve – Wafer Type
Pressure Rating	PN10
Available Sizes	DN100 (4"), DN150 (6"), DN200 (8")
Body Material	GGG40 (Ductile Iron)
Gate / Knife Material	SS 304 Stainless Steel
Seat	EPDM – Soft Seated, Bi-directional
Leakage Class	Class IV
Design Standard	MSS SP-81 / Equivalent
Face-to-Face	Manufacturer Standard (Wafer Type)
End Connection	Wafer – suitable for PN10 flanges
Operation	Hand Wheel / AUMA Electric Actuator (24V DC)
Painting	Industrial Epoxy Coating
Warranty	12 months from supply or 18 months from dispatch

Test Pressure (Class 150#)

Test Type	Pressure (kg/cm²)	Standard
Hydrostatic Test – Body	30 kg/cm²	MSS SP-81
Hydrostatic Test – Seat	22 kg/cm²	MSS SP-81
Air Test – Seat	7 kg/cm²	MSS SP-81

GAD – Dimensional Data (mm)

End detail: Wafer to suit ASME B16.5. Inspection & test, face-to-face, manufacturing standard: MSS SP-81.

Size (inch)	Size (mm)	L	ØD	ØC	B	ØJ	PCD
2"	50	48	60	50	12	12	120.6
2.5"	65	48	70	65	12	12	139.7
3"	80	51	80	75	12	12	152.4
4"	100	51	135	100	12	18	190.5
5"	125	58	110	125	15	18	215.9
6"	150	58	160	150	15	18	241.3
8"	200	70	210	200	15	18	298.4

L = Face-to-Face, ØD = Body OD, ØC = Bore, B = Body Thickness, ØJ = Bolt Hole Dia, PCD = Pitch Circle Diameter. Green rows = sizes with pricing available. Reference standards: MSS SP-81 / ASME B16.5.

Applications

Wastewater Treatment

Pulp & Paper

Mining & Slurry

Cement & Ash Handling

Power Plants

Chemical Processing

Commercial Terms

Price Basis

Ex-Works, Ahmedabad. GST extra as applicable.

Delivery

2-3 weeks from PO & drawing approval.

Payment

50% advance, 50% before dispatch.

Warranty

12 months from supply or 18 months from dispatch.

Documents Provided After PO

Valve Datasheet

GAD Drawing

Material Test Certificates

Pressure Test Report

Actuator Datasheet (AUMA)

Frequently Asked Questions

What is a knife gate valve?

A knife gate valve has a sharp-edged blade that cuts through thick media for shut-off. Designed for slurry, pulp, wastewater, and mining tailings. The knife edge can cut through solids that would jam conventional gate valves.

What is the price of knife gate valve PN10?

DN100 (4") manual = ₹9,737, DN150 (6") manual = ₹12,194, DN200 (8") manual = ₹19,838. DN100 with AUMA actuator = ₹34,737. All prices Ex-Works India. Delivery 2-3 weeks.

What is GGG40 material?

GGG40 is ductile iron per DIN EN 1563. Tensile strength 400 MPa. Equivalent to ASTM A536 60-40-18. Good strength, ductility, and corrosion resistance at lower cost than steel.

What is wafer type?

Wafer type = valve sandwiched between two pipe flanges using through-bolts. No flanges of its own. Lighter, compact, and more economical than flanged type.

What is AUMA actuator?

AUMA is a leading German manufacturer of electric actuators. This valve uses AUMA 24V DC ON-OFF actuator with proximity sensors for position feedback. Provides automated operation and remote control.

What is EPDM bi-directional seat?

EPDM bi-directional seat seals against flow from both directions. Provides bubble-tight shut-off, good chemical resistance, temperature range -40°C to +120°C, and Leakage Class IV performance.

Need Knife Gate Valves for Your Project?

We supply knife gate valves with AUMA actuators. Export to UAE, Middle East, Africa. Complete documentation including GAD, MTCs, and test reports.