Square Port Knife Gate Valve

Square Knife Gate Valve

MVS Square knife gate valve are designed for lines with square and rectangular shapes. Rectangular Port knife gate valves are mainly used for discharging bins, tanks. Under hoppers for the storage of solids products and for highly charged fluids. The design of the valve improve the discharge and avoid the obstruction of the product.

Square port body knife gate valve design for higher flow capacity and minimal pressure drop. Internal design avoids any build up of solids that would prevent valve from closing. Internal gate wedges and guides for tighter shut off.

Square Knife Gate Valve is a fabricated square or rectangular port low-pressure valve for fluids with :

High solids concentration or solids,

Mainly used in bulk handling

Silo outlet applications in industries such as Chemical Plants, Power Plants, Food and Beverage, Wastewater Treatment Plants, Mining , Etc.

SPECIFICATIONS : SQUARE KNIFE GATE VALVE

Sizes : Size 8’’ x 8’’ to Size 24’’ x 24’’ (larger diameters on request)

Working Pressure :

8’’ x 8’’ : 35 PSI
10” x 10” : 30 PSI
12” x 12’’ : 30 PSI
14” x 14” : 21 PSI
16’’ x 16’’ : 21 PSI
18’’ x 18’’ : 18 PSI
20’’ x 20’’ : 14 PSI
24’’ x 24’’ : 14 PSI (Above Sizes on Request)

Seat Types :

METAL / METAL : High temperature, High density media application , Positive shut off

RESILIENT : Temperature according to seat material, Replaceable seal retainer plates.

Temperature Range : up to 1200°F (650°C)

Materials : Valves are available in solid or wetted parts in any weldable alloy, Stainless Steel, Hastelloy, Inconel, Monel.

Abrasive Service : Optional abrasion & corrosion resistant designs with hard facing like Stellite, Tungsten Carbide, Pulse Fusion.

Valve Style : Bonnetless Valve, Bonneted Valve

DESCRIPTION :

BODY :

Unidirectional fabricated type knife gate valve

Cast mono block design.

Internal cast gate wedges and guides allow for tighter shut off.

Square port design for greater flow capacity and minimal pressure drop.

Internal design avoids any build up of solids that would prevent valve from closing.

GATE:

Standard stainless steel gate.

Polished gate on both sides for a greater seal between the packing and the seat.

Bottom of the gate edge bottom is machined to a bevel to shear off the solids during the final closing stage.

PACKING CHAMBER :

Several lines of braided fiber plus an EPDM O-ring for long life, with an easy access packing gland ensuring a tight seal.

Long-life braided packing is available in a wide range of materials.

STEM :

Rising & non-rising stem configurations available

The standard stainless steel stem offers a long corrosion resistant life.

A standard nipple fitted on the hand wheel to lubricate the stem whilst operating the valve

For rising stem hand wheel, a stem protector provides additional protection against dust while the valve is in the open position.

YOKE & SUPPORT PLATES :

EPOXY coated steel (stainless steel available on request).

Compact design makes it robust even in the most severe conditions.

Reinforced design is standard starting from size 14’’ x 14’’.

Manual (hand wheel and bevel gear),

hydraulic, pneumatic (double-acting cylinder)

electric actuation options available

STANDARD PARTS LIST

Sr. No.	Part	Material
6	Seal Retainer Plate	Carbon steel / AISI 316
7	Slider Support	Carbon steel or AISI-316 + Nylon or PTFE
8	Yoke	Carbon steel - Epoxy coated
9	Stem	AISI 430
10	Stem Nut	Brass
11	Friction Washer	Brass
12	Handwheel	GJS400 (GGG40)
13	Stem Protector	Epoxy-coated carbon steel
14	Cap	Plastic
15	Nut	Zinc plated carbon steel
1	Body	Carbon Steel / AISI 316
2	Gate	AISI 304 / AISI 316
3	Seat	Metal-to-Metal or EPDM
4	Packing	PTFE imprg.synth. fibre with EPDM o -ring
5	Gland Follower	Carbon steel / AISI 316

DIMENSIONS (mm) Handwheel Rising Stem

DN	Working pressure	A	B	C	D	F	ØG	H
400 x 400	1 bar	100	500	137	494	68	410	1240
450*450	1 bar	100	550	137	544	68	410	1390
500 x 500	1 bar	110	600	137	594	68	410	1575
600 x 600	1 bar	110	700	137	694	68	410	1725
150 x 150	1 bar	80	240	100	219	47	225	580
200 x 200	1 bar	80	290	115	288	67	310	740
250 x 250	1 bar	80	340	115	338	67	310	915
300 x 300	1 bar	80	390	115	388	67	310	990

DIMENSIONS (mm) Pneumatic Actuator (D/A)

DN	Working pressure	A	B	C	D	E	F	H	Standard Cyl.	Connect.
450 x 450	1 bar	100	550	137	544	585	140	1404	C125/455	1/4" G
500 x 500	1 bar	110	600	137	594	650	175	1544	C160/510	1/4" G
600 x 600	1 bar	110	700	137	694	750	175	1794	C160/610	1/4" G
150 * 150	1 bar	80	240	100	219	266	115	605	c100/150	1/4" G
200 x 200	1 bar	80	290	115	288	317	115	750	C100/200	1/4" G
250 x 250	1 bar	80	340	115	338	367	115	875	C100/250	1/4" G
300 x 300	1 bar	80	390	115	388	417	140	1000	C100/300	1/4" G
350 x 350	1 bar	100	450	137	444	485	140	1154	C125/355	1/4" G
400 x 400	1 bar	100	500	137	494	535	140	1279	C125/405	1/4" G

FLANGE AND BOLTING DETAILS

DN	A x A	nº divis. to Y	M	d	T
250 x 250	340 x 340	2 div.to 155=310	M-10	12	10	7 - 1
300 x 300	390 x 390	3 div.to 120=360	M-10	12	10	10 - 2
350 x 350	450 x 450	3 div.to 140=420	M-12	14	10	10 - 2
400 x 400	500 x 500	4 div.to 117,5=470	M-12	14	10	13 - 3
450 x 450	550 x 550	4 div.to 130=520	M-12	14	10	13 - 3
500 x 500	600 x 600	4 div.to 142,5=570	M-12	14	10	13 - 3
600 x 600	700 x 700	4 div.to 167,5=670	M-12	14	10	13 - 3
150 x 150	240 x 240	2 div.to 105=210	M-10	12	10	7 - 1
200 x 200	290 x 290	2 div.to 130=260	M-10	12	10	7 - 1

Square Knife Gate Valve

SPECIFICATIONS : SQUARE KNIFE GATE VALVE

DESCRIPTION :

STANDARD PARTS LIST

DIMENSIONS (mm) Handwheel Rising Stem

DIMENSIONS (mm) Pneumatic Actuator (D/A)

FLANGE AND BOLTING DETAILS

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PTFE Lined Valve

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PVDF Valve

© Mayur (Valves) System 2020 All Rights Reserved

Square Knife Gate Valve

SPECIFICATIONS : SQUARE KNIFE GATE VALVE

DESCRIPTION :

STANDARD PARTS LIST

DIMENSIONS (mm) Handwheel Rising Stem

DIMENSIONS (mm) Pneumatic Actuator (D/A)

FLANGE AND BOLTING DETAILS

Product Inquiry

© Mayur (Valves) System 2020 All Rights Reserved