Manual Knife Gate Valve

When your application requires reliable manual control and cost-effective operation, a manual knife gate valve delivers exceptional performance and operator convenience. This robust manual knife gate valve is engineered for applications demanding precise flow control — whether you’re managing wastewater treatment systems, pulp and paper processes, or mining operations where hands-on control is essential. The ergonomic handwheel design ensures smooth operation even under high differential pressures, while maintaining the superior cutting action of our proven knife gate technology. With intuitive manual operation and rugged construction, it provides dependable service in demanding industrial environments where automated systems are unnecessary or impractical.

Ready to achieve reliable manual control in your critical flow applications? Contact us today for a manual solution engineered for your specific operational requirements. Let TOT Valve empower your operations with proven manual reliability.

The TOT Valve You Can Depend On – Manual Operation When Simplicity Meets Performance

When your process requires hands-on control, cost-effective operation, or backup capability during power outages, you need the reliable performance of our manual knife gate valve. With precision-engineered handwheel operation, this knife gate valve provides smooth manual control, exceptional operator feedback, and outstanding durability — all while maintaining the reliable cutting action that makes knife gates ideal for challenging media.

The manual operation design provides immediate response and precise positioning throughout the valve’s service life, making it the preferred choice for applications requiring operator control and system simplicity.

Why Manual Knife Gate Valve Works for You?

Ergonomic handwheel design ensures smooth operation with minimal operator effort
High-efficiency ACME thread provides optimal mechanical advantage for easy operation
Position indication offers clear visual feedback of valve position
Non-rising stem design saves valuable installation space and protects threads
Self-adjusting packing maintains stem sealing without frequent maintenance
Corrosion-resistant construction ensures long-term reliability in harsh environments
Knife-edge gate cuts through fibrous materials, settled solids, and viscous media efficiently
No external power required provides operation during power outages or remote locations
Low maintenance design minimizes operational costs and downtime
Multiple mounting orientations accommodates various installation requirements
Robust thrust bearing system handles high operating loads with smooth operation

Manual Knife Gate Valve Main Technical Specifications & Performance

Reliable Manual Operation, Precision Engineering, Knife Gate Valve

Specification	Details
Design & Manufacturing Standard	MSS SP-81, AWWA C515
Size Range	DN50 to DN1200 mm; NPS 2″-48″ (Customized to Your Request)
Pressure Ratings	PN6, PN10, PN16, ANSI 150Psi, 5K/10K, etc.
Working Pressure Classification	DN50–DN300: 16Bar; DN350–DN500: 10Bar; DN600–DN800: 6Bar; DN900–DN1200: 4Bar
Operating Torque	Optimized for manual operation (detailed torque charts available)
Face-to-Face Standard	MSS SP-81, AWWA C515
Flange Connection Standards	GB/T9113–2010, EN1092–2002, ASME B16.5–2013, ASME B16.47–2011, AS2129–2000, AS4087–2004, JIS B2220–2004
Testing Standard	MSS SP-81, API 598, EN 12266-1
Body Materials	WCB, CF8, CF3, CF8M, CF3M, 4A, 5A, 904L
Temperature Range	-29°C to +200°C (depending on material selection)
Handwheel Materials	Ductile Iron (GGG30), Cast Iron (GG25), Stainless Steel
Thread Standards	ACME, Metric Trapezoidal, Square Thread
Applications	Water Treatment, Mining, Pulp & Paper, Food Processing, Chemical, Municipal
Operation Type	Manual Handwheel, Chain Wheel (for elevated installations)

Manual Knife Gate Valve Main Components and Materials

Part Name	Material Options
	WCB	CF8	CF8M
Body	WCB	CF8	CF8M
Gate	304SS	316SS	316L
Seat	EPDM/Metal	EPDM/Metal	EPDM/Metal
Bonnet	WCB	CF8	CF8M
Handwheel	GGG30	GGG30	316SS
Stem	2Cr13	316SS	316L
Stem Nut	Bronze	Bronze	Bronze
Thrust Bearing	Bronze/PTFE	Bronze/PTFE	Bronze/PTFE
Packing	PTFE/Graphite	PTFE/Graphite	PTFE/Graphite
Packing Gland	WCB	CF8	CF8M
Yoke	Q235	304SS	316SS
Position Indicator	Aluminum	Aluminum	316SS
Stem Protector	304SS	304SS	316SS
O-rings	NBR/EPDM	NBR/EPDM	EPDM/Viton
Fasteners	A193-B7	A4-70	A4-80
Handwheel Nut	Steel	304SS	316SS

Advanced Manual Operation Technology

ACME Thread Design: Precision ACME threads provide optimal mechanical advantage and smooth operation

Self-Locking Feature: Thread design prevents valve drift under system pressure

Ergonomic Handwheel: Designed for comfortable operation with proper rim speed and diameter

Thrust Bearing System: High-quality bearings ensure smooth operation throughout service life

Position Indication: Clear visual indication of valve position and travel limits

Stem Protection: Protective covers prevent contamination and operator contact with moving parts

TOT Valve Tailored for Your Manual Operation Applications – Versatile Control Options

You can customize this manual knife gate valve for your exact operational requirements:

Handwheel Options:

Standard Handwheel: Cast iron construction for general service applications
Stainless Steel Handwheel: Corrosion-resistant for harsh environments
Extended Handwheel: Larger diameter for reduced operating effort
Chain Wheel: For elevated or hard-to-reach installations

Operating Configurations:

Direct Mount: Standard handwheel directly mounted to stem
Gear Drive: Reduction gearing for high-torque applications
Chain Operation: Extended chain wheel for remote operation
Portable Handwheel: Removable handwheel for security applications

Special Features:

Position indicators: Mechanical position indication with limit stops
Locking devices: Padlock capability for security applications
Weather protection: Handwheel covers for outdoor installations
Stem extensions: For buried valve applications

Manual Knife Gate Valve Dimensions

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

If you don’t have the manual 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)	Handwheel Ø	Operating Torque (Nm)
DN(mm)	NPS(in)
50	2″	48	135	106	100	129	85	180	395	200mm
65	2-1/2″	48	155	106	115	147	85	180	436	200mm
80	3″	51	175	106	121	168	85	200	478	200mm
100	4″	51	163	106	138	192	85	200	545	250mm
125	5″	57	192	120	160	215	87	250	630	250mm
150	6″	57	216	130	185	245	87	280	705	300mm
200	8″	70	271	130	235	302	105	300	850	300mm
250	10″	70	335	140	300	355	105	350	1065	350mm
300	12″	76	381	160	350	401	105	400	1200	400mm
350	14″	76	436	180	400	465	117	450	1375	450mm
400	16″	89	505	180	455	511	117	450	1525	500mm

Operating Torque Guide

Application	Pressure (Bar)	Torque Factor	Recommended Features
Clean Water	Up to 10	Standard	Standard handwheel
Wastewater/Sludge	Up to 6	1.2x Standard	Extended handwheel
Abrasive Media	Up to 4	1.5x Standard	Gear operator recommended
High Pressure	Up to 16	1.8x Standard	Gear operator required
Viscous Media	Variable	1.3x Standard	Chain wheel option
Emergency Service	Variable	Standard	Portable handwheel

Performance Advantages & Features

Smooth Operation: Precision-engineered components ensure consistent operation throughout service life

Minimal Operating Effort: Optimized thread design reduces required operating force

Immediate Response: Direct mechanical connection provides instant valve response

Position Feedback: Clear visual indication of valve position prevents misoperation

No Power Dependency: Reliable operation during power outages or in remote locations

Low Maintenance: Simple mechanical design minimizes maintenance requirements

Quality Assurance & Certification

Every TOT manual knife gate valve undergoes rigorous testing:

Hydrostatic shell testing at 1.5x working pressure
Seat leakage testing per applicable standards
Operating torque verification under rated pressure conditions
Thread pitch and surface finish inspection
Handwheel torque and fatigue testing
Material certification with full traceability documentation

Installation & Maintenance Benefits

Simple Installation: Standard flange connections with no external power requirements

Ergonomic Design: Handwheel positioned for comfortable operator access

Easy Maintenance: Accessible packing adjustment without valve removal

Predictive Maintenance: Operating torque monitoring indicates component condition

Field Service: All wearing parts accessible for field replacement

Training Support: Operator training programs for safe and efficient operation

Safety & Operational Guidelines

Operating Safety: Clear position indication prevents accidental operation

Torque Limits: Specified maximum torques prevent component damage

Environmental Protection: Weather-resistant construction for outdoor service

Security Options: Locking devices available for restricted access applications

Ergonomic Standards: Handwheel design meets occupational safety requirements

Emergency Operation: Manual override capability for automated valve backup

Cost Benefits & Economics

No Operating Costs: Zero energy consumption for valve operation

Minimal Maintenance: Simple mechanical design reduces service requirements

Long Service Life: Robust construction ensures extended operational life

No Control System: Eliminates need for expensive automation equipment

Operator Training: Simple operation requires minimal training investment

Spare Parts: Common mechanical components readily available

Contact TOT Valve today for technical consultation and competitive quotation on your manual knife gate valve requirements for reliable manual operation applications.