Unidirectional Knife Gate Valve

This unidirectional knife gate valve is a lug type knife gate valve used on industrial pipeline for on-off operation.

TOT Valve is made of high-quality stainless steel raw materials, produced by casting or forging, and meets API standards.

The unique valve structure eliminates potential clogging shutoff when the valve is dealing with flow with particles.

Description

TOT Valve is a disc type unidirectional knife gate valve, a stainless steel knife gate valve for your industrial pipeline opening and closing operations.

The structure of the TOT valve body and valve seat can eliminate the blockage caused by the flow of fine particles in your application. In addition, our bevel knife gate design can generate huge shear stress, which is more conducive to the penetration of fluids in your pipeline.

The bottom of our gate fixture port uses a claw design instead of a groove to eliminate any potential blockage when your valve is closed.

The preloaded valve seat is adjustable to meet different sealing levels and compensate for normal seat wear.

We add a PTFE elastic point guide on the gate port, which prevents metal-to-metal contact between the gate and the valve body, ensuring your service life.

Knife Gate Valve Features

Integral full-bore structure, smooth flow, easy assembly, less possibility of housing leakage.
Angled blade, strong cutting force, good sealing
Gate thickness can be increased to meet higher pressures
Side-entry seat is replaceable, reducing maintenance costs
Dual thrust bearings minimize the torque required for operation
We provide grease for easy bearing lubrication

Size Range	DN50~600mm NPS 2″-24″ （Larger size on request）
Max Working Press	DN50~DN600:10Bar, NPS2~NPS24:150Psi
Temp. Range	-29 ~ +800℃
Seal Tightness	According to MSS SP-81 Standard
Body Material	Stainless Steel (CF8, CF3, CF8M, CF3M)
Gate Material	Stainless Steel Chrome Plated
Seat Material	Stainless Steel(CF8,, CF3, CF8M, CF3M) + STL/EPDM (120°C) /Viton(200°C)/PTFE(200°C) /NBR(90°C)
Face to Face	MSS SP-81 Standard
Flange Standard	ASME B16.5, EN1092-1
Applications	Pulp & Paper, Water Treatment，Beverage & Food，Fine Chemical, Power Planet，Steel Industry, etc.

Main External and Connection Dimension

TOT Valve can provide you with API knife gate valve of various dimension and models.

We list some knife gate valve dimensions, can be used for your reference. If you do not have the 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.

DN	A	B	C	D	E	F	G	H
50	48	135	106	100	129	85	180	315
65	48	155	106	115	147	85	180	350
80	51	175	106	121	168	85	200	375
100	51	163	106	138	192	85	200	415
125	57	192	120	160	215	87	250	465
150	57	216	130	185	245	87	280	520
200	70	271	130	235	302	105	300	645
250	70	335	140	300	355	105	350	760
300	76	381	160	350	401	105	400	860
350	76	436	180	400	465	117	450	982
400	89	505	180	455	511	117	450	1083

Thrust & Torque Data Sheet

This is the relevant data obtained by TOT Valve after rigorous testing. I hope it will help you choose the right knife gate valve.

DN	Thrust (N)	Torque (N*M)	Stem Turns	Stem Size
50	3450	20	15	Tr20*4 LH
65	3520	25	18	Tr20*4 LH
80	2750	30	23	Tr20*4 LH
100	3900	35	28	Tr20*4 LH
125	5900	45	28	Tr22*5 LH
150	6100	65	33	Tr22*5 LH
200	10000	90	37	Tr28*6 LH
250	15000	140	45	Tr28*6 LH
300	20000	185	52	Tr28*6 LH
350	24000	225	60	Tr32*6 LH
400	33500	290	69	Tr32*6 LH
450	35000	405	66	Tr35*6 LH
500	38000	480	73	Tr40*7 LH
600	40000	610	88	Tr40*7 LH