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Bidirectional knife gate valves of PA 520 series
Bidirectional knife gate valves with demountable body of PA 530 series
Unidirectional knife gate valves of PA 540 series
Bidirectional knife gate valves with internal rubber inserts of PA 550 series
Bidirectional knife gate valves with polyurethane seat of PA 560 series
Unidirectional knife gate valves for high pressure with blind body of PA 570 series
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Knife Gate Valves of PromArm manufacturing

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Knife gate valve - a type of valve where the locking element is designed as a knife with a sharpened edge.

Knife gate valves are commonly used in such industrial branches as: pulp and paper, textile, food, mining, chemical industry, of housing and communal services (sewerage and waste water filtering). They are used at the pipelines with a high percent of abrasive particles in the working media.

Traditional gate valves have a design with a places where the remains of working media can be accumulated (so-called dead zones). Solids gathered there may affect the operational work of the gate valve. Knife gate valves, due to their design, do not have such drawback: they have a knife that comes out while opening, otherwise the sharp edge cuts through solids in the working media while closing that ensures tightness.

Knife gate valves PA 510 series. Image

Knife gate valves
PA 510

Knife gate valves with through knife

Knife gate valves PA 520 series. Image

Knife gate valves
PA 520

Bidirectional knife gate valves

Knife gate valves PA 530 series. Image

Knife gate valves
PA 530

Bidirectional knife gate valves with demountable body

Knife gate valves PA 540 series. Image

Knife gate valves
PA 540

Unidirectional knife gate valves

Knife gate valves PA 550 series. Image

Knife gate valves
PA 550

Bidirectional knife gate valves with internal rubber inserts

Knife gate valves PA 560 series. Image

Knife gate valves
PA 560

Bidirectional knife gate valves with polyurethane seat

Knife gate valves PA 570 series. Image

Knife gate valves
PA 570

Unidirectional knife gate valves for high pressure with blind body

Icon. Download knife gate valves catalog  Knife gate valves catalog Icon. Download the inquiry form  Knife gate valves inquiry form
Icon. Download the reference list  Reference-list Icon. Download inquiry form for stem extensions for knife gate valves  Stem extensions for knife gate valves inquiry form

Classifier of knife gate valves PA series

PA 1 2 3 DN PN - 4 5
Type 5 PA500 – knife gate valves
Series 1 with through conduit knife
2 bidirectional
3 bidirectional in dismountable body
4 unidirectional
5 bidirectional with internal rubber
inserts
6 bidirectional with polyurethane seat
7 unidirectional in a cast body for high
pressure
Seat 1 NBR
2 EPDM
3 Viton
4 PTFE
7 Metal-on-metal
8 Natural rubber
0 Polyurethane
Body
material
01 Ductile cast iron GGG40
02 Carbon steel WCB
04 Corrosion-resistant steel CF8
05 Corrosion-resistant steel with molybdenum CF8M
Actuator Ш Handwheel with rising stem
ШН Handwheel with non-rising stem
РД Gearbox with rising stem
РН Gearbox with non-rising stem
РГ Lever
ПП1 Single-acting pneumatic actuator
ПП2 Double-acting pneumatic actuator
ЭП Electric actuator
ЭПН Electric actuator with non-rising stem

Knife gate valves consist of the following parts:

- cast one-piece body;

- gate in the form of a knife that moves inside the valve body;

- seat ring providing gate leak tightness;

- gland seal meant for hermetic sealing of the body from the ambient environment;

- yoke assembly that changes rotational movement of the actuator to translational movement of the knife.

A typical list of materials for a knife gate valve is as follows:

- body made of carbon steel,

- knife made of stainless steel,

- seat ring made of EPDM,

- gland seal made of PTFE.

However, different variants are possible according to the customer’s choice.

The main advantages of knife gate valves:

- much lesser construction lenght comparing to traditional gate valves;

- light weight;

- the repair of knife gate valve is possible without necessarity to dismount it.

Knife gate valves DN 100-600 mm are in stock in our warehouse.

You can select the required items using search, selection by DN/PN or go to all knife gate valves and use the catalog filter.

You can contact us by the phone 7 (8412) 35-07-97 or e-mail: info@promarm.ru to ask all technical questions and order products.

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