Wafer Type Knife Gate Valve

When you need space-saving isolation in tight pipeline configurations, a wafer type knife gate valve is your ideal solution. This lightweight, compact stainless steel wafer knife gate valve is engineered for installations where space is premium and weight reduction is critical — perfect for handling slurry, pulp, corrosive fluids, and abrasive media. The wafer design fits between existing flanges without additional bolting, significantly reducing installation costs and system footprint. With corrosion-resistant stainless steel construction and versatile actuation options, it delivers reliable performance in industries demanding efficiency, compact design, and cost-effective solutions.

Ready to optimize your flow control system? Contact us today for a customized wafer valve solution tailored to your exact specifications. Let TOT Valve streamline your operations.

The TOT Valve You Can Depend On – Compact Design, Maximum Performance

When your process involves slurry, pulp, abrasive fluids, or corrosive chemicals in space-constrained installations, you need the reliability of our wafer type knife gate valve. With its lightweight wafer body design, this knife gate valve provides absolute shut-off performance, bi-directional sealing capability, and easy installation between existing flanges — all while maintaining the rugged performance you expect.

The wafer design eliminates the need for through-bolts, allowing installation directly between pipeline flanges using existing bolting, making it the most economical choice for new installations and retrofits.

Why Wafer Type Knife Gate Valve Works for You?

Corrosion-resistant stainless steel (SS304/316) keeps your operation running in aggressive environments.
Wafer-style design fits between flanges with no additional bolting required, reducing installation costs.
Knife-edge gate slices through thick media like pulp, slurry, or powders with no clogging.
Bi-directional sealing ensures reliable shut-off regardless of flow direction.
Soft or metal seats ensure you get the shut-off performance your application demands.
Choose your actuator – manual, pneumatic, electric, or chainwheel – for total control.
Lightweight construction reduces pipeline stress and support requirements.
Low maintenance – reduce downtime with replaceable seats and packing.
Compact design saves valuable space in crowded installations.
No flow restriction – full bore design maintains system efficiency.

Wafer Knife Gate Valve Main Technical Specifications & Performance

Bi-directional Sealing, Resilient Seat, Wafer Type Knife Gate Valve

Specification	Details
Design & Manufacturing Standard	MSS SP-81, API 6D
Size Range	DN50 to DN1200 mm; NPS 2″-48″ (Customized to Your Request)
Pressure Ratings	PN10, PN16, ANSI 150Psi, 5K/10K, etc.
Working Pressure Classification	DN50–DN250: 10Bar; DN300–DN450: 7Bar; DN500–DN600: 4Bar; DN700–DN1200: 2Bar
Face-to-Face Standard	MSS SP-81, Short Pattern
Flange Connection Standards	GB/T9113–2010, EN1092–2002, ASME B16.5–2013, ASME B16.47–2011, AS2129–2000, AS4087–2004, JIS B2220–2004
Inspection & Testing Standard	MSS SP-81, API 598
Body Materials	WCB, CF8, CF3, CF8M, CF3M, 4A, 5A, 904L
Temperature–Pressure Rating Standards	GB/T12224–2007, ASME B16.34–2009, ISO7005–1
Applications	Pulp & Paper, Mining, Chemical, Pharmaceutical, Potable Water, Wastewater Treatment, Municipal Sewage, Water Conservancy, Power Plants, etc.
Actuation Methods	Manual, Pneumatic, Electric, Gear Drive, Chain Drive, Lever

Wafer Knife Gate Valve Main Components and Materials

Part Name	Material Options
	WCB	CF8	CF8M
Body	WCB	CF8	CF8M
Gate	304	316	316L
Seat	STL or EPDM	STL or EPDM	STL or EPDM
O-ring	NBR	NBR	EPDM
Gland	WCB	CF8	CF8M
Packing	PTFE	PTFE	PTFE
Yoke	Q235	304	316
Stem	2Cr13	316	316L
Stem Nut	Brass	Brass	Brass
Pin	65Mn	304	316
Handwheel	GGG30	GGG30	GGG30
Stem Protector	304	304	316
Fasteners	A2-70	A4-70	A4-80

TOT Valve Tailored for Your System – Custom Options

You can customize this wafer valve for your exact system requirements:

Gate Finish: Polished, hardened edge, or duplex stainless
Seat Type: EPDM, PTFE, Viton, NBR, or metal seated with Stellite overlay
Actuation Options: Pneumatic actuator with solenoid & limit switch, electric motor with controls
Body Coating: Epoxy, ceramic lining, PFA lining for enhanced chemical resistance
Automation Ready: ISO 5211 mounting pad for easy actuator installation
Special Features: Extended stem for buried service, position indicators, limit switches

Wafer Knife Gate Valve Dimensions

TOT valve can provide you with various sizes of wafer knife gate valve. We have listed some wafer type knife gate valve sizes for PN16 for your reference.

If you don’t have the wafer type knife gate valve size you need, you can contact us immediately. Our professional sales manager will contact you and can provide you with exclusive ODM and OEM services.

Size	A (mm)	B (mm)	C (mm)	D (mm)	E (mm)	F (mm)	G (mm)	H (mm)
DN(mm)	NPS(in)
50	2″	43	135	106	100	129	85	180
65	2-1/2″	46	155	106	115	147	85	180
80	3″	46	175	106	121	168	85	200
100	4″	52	163	106	138	192	85	200
125	5″	56	192	120	160	215	87	250
150	6″	61	216	130	185	245	87	280
200	8″	78	271	130	235	302	105	300
250	10″	92	335	140	300	355	105	350
300	12″	102	381	160	350	401	105	400
350	14″	114	436	180	400	465	117	450
400	16″	127	505	180	455	511	117	450

Installation Advantages

Cost Effective: No additional through-bolts required — uses existing flange bolting
Space Saving: Minimal face-to-face dimension reduces pipeline length
Weight Reduction: Lighter than lug-type valves, reducing support requirements
Easy Retrofit: Perfect replacement for existing wafer valves without pipeline modification
Maintenance Friendly: Can be removed for service without disturbing adjacent piping