Manual Pinch Valve, Pinch Valve Factory

Leflow&#;s high quality Pinch Valve is the ideal solution for shutting off and controlling abrasive, corrosive and fibrous media such as emulsions, silt, dust,gaseous substances, compressed air, powdery materials and particles. It has following options:

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1.Body can be made of Ductile Iron, WCB,Aluminium and other Stainless Steel;
2.Operation can be Manual, Pneumatic and Electric;
3.Sleeve can be made of EPDM,NBR,NR(Natural Rubber) and so on.

Pinch valve, also known as pressure valve,is a valve that uses manual, pneumatic, electric and other driving methods to squeeze the internal rubber tube to On-off or regulate the flow.

Pich valve is composed of upper and lower valve body, rubber sleeve, Upper and lower stem, upper and lower gate, left and right guide post and other parts; As the core component, the rubber sleeve is usually composed of an inner layer, an outer layer and a reinforcing fiber, and is formed by vulcanized rubber. Common rubber sleeve materials are natural rubber, fluorine rubber, neoprene rubber ball, EPDM rubber, nitrile rubber, food grade rubber ball and so on.

When the hand wheel is rotated clockwise, the size of the pinch valve stem simultaneously drives the upper and lower valve plates to compress the rubber sleeve, and the valve is closed. When it is turned anti-clockwise, the valve is opened due to the joint action of the elasticity of the rubber sleeve and the pressure of the medium. The gate moves up and down between the left and right guide to complete the valve opening and closing;

During the closing, Once it feels the connection between upper and lower sleeve, then stop continuing to close, More torque will damage the sleeve.

The Pinch valve can be installed in any direction on the pipe, and there is no medium flow limit. After using for a long time, if the rubber sleeve is found to be worn and leak happens, just disassemble the upper and lower valve body and replace it with a new rubber sleeve. The valve body can be reused and the maintenance cost is very low.

Manual Pinch Valve

Leflow&#;s Manual Pinch Valve is a reliable, low-maintenance, and cost-effective valve designed for challenging slurry, abrasive, and corrosive chemical applications across various industries. The 100% full bore design eliminates any dead points or gaps, seats, or bearings where slurries might stagnate and affect operation, or even lead to valve failure. The manual pinch valve features a bi-directional drip-tight closing function, and its design meets face-to-face dimensions identical to gate valves, plug valves, and ball valves (DN25 &#; DN). They are designed with flange connections conforming to EN, API 598 standards, or DIN BS, JIS B, ANSI B16.5.

Popular material of Rubber sleeve

Type of Rubber Working Temperature Suitable Medium Butyl Adhesive (Grade B) (IIR) &#;120&#; 85% sulfuric acid, hydrochloric acid, hydrofluoric acid, phosphoric acid, caustic alkali and a variety of lipids Natural Rubber(NR) &#;100&#; Purify water, inorganic salt, dilute inorganic acid, etc EPDM &#;120&#; low pressure steam, hot water and cold water. Neoprene rubber (CR) &#;85&#; Acid, alkali, oil and non-solvent resistance, better wear resistance than rubber Butyryl rubber (NBR) &#;85&#; Oil and wear resistance, its acid resistance is similar to rubbe fluororubber &#;150&#; It has similar wear-resistant corrosion properties of fluorine plastics, stable in concentrated acid and strong oxidation properties, stable in ji solvents and alkali solutions.

The disadvantage of pinch valves is that they cannot be used in vacuum systems.

Stainless Steel Soft Seated Valves manufacturer in India

Soft seated Gate Valve is made from ductile iron and is used in mainly water supply lines. The material is soft and can be used with ease with the pipelines. There are different types that are used in different industrial applications. The material is mostly GGG40 or GGG50 with flat body. The soft seated knife gate valve is used with waste water management systems. The knife shape is useful to cut through the high viscosity waste water during faster flows. There are also EPDM covered soft seat wedge gate valve types. These are used in drinking water applications as well. The valves come in different dimensions and sizes. The pressure numbers range as PN10 or PN16 for these valves in the water pipe lines. There are different types of body bonnet such as ductile iron, 500-15 and EN-GJS-400.

Ductile Iron Soft Seated Gate Valves

PN 10 knife gate valve

Soft Seat Wedge Gate Valve

View A351 CF8 304 Soft Seated Gate Valve Dimensions, Cast Steel Soft Seat Wedge Gate Valve Manufacturers

The wedge can also be ductile iron, EPDM covered and other types. The handwheel of the Resilient Soft Seated Gate Valves can differ as cast iron GG25, EN-GJL-250 and so on. The stem of the valve can be stainless steel X20 X13 and the stem seat is an O-ring. The soft seated gate valve dimensions range differently based on the applications as well with the DN numbers ranging from 40 to 600 with diameters ranging from 150mm to 840mm. The weight of the valves vary from 8kg to 600kg depending on the size of the valve. The length and height of the valves also vary. The nominal pressure for these valves is 16 bars.

Soft seated Gate Valves Specification

Specifications Ports: Single Body Style: Non Rising Size Range: DN.40 - 600MM Temperature Range: < 80 °C Pressure Ratings: PN1.0, PN1.6 Steam Rating: N/A End Connections: Flanged Body Materials: C.I/D.I Seat/Gasket Materials: NBR-Rubber

PN 10 soft seated knife gate valve Materials

body-bonnet  ductile iron GGG40/50, EN-GJS-400/500-15 wedge  ductile iron GGG40/50, EN-GJS-400/500-15 EPDM covered handwheel cast iron GG25, EN-GJL-250 stem stainless steel X20 CR13 stem seat o-ring bonnet gasket  EPDM painting  epoxy 250 mcr

PN 16 Soft seated Gate Valves Dimensions

DN L mm. H mm. D mm. Weight kg. 40 140 220 150 8 50 150 230 165 10 65 170 240 185 13 80 180 280 200 16 100 190 330 220 19 125 200 390 250 27 150 210 460 285 35 200 230 550 340 56 250 250 660 405 81 300 270 760 460 115 350 290 820 520 221 400 310 950 580 257 450 330 970 640 303 500 350 715 363 600 390 840 600

Dimensions Table of PN 10 Soft seated Gate Valves

DNLHDC

Nominal pressure of soft seat wedge gate valve

DN Nominal pressure Test pressure Mpa Max working pressure Mpa mm BAR body seat 80°C 40-600 16 2,4 1,76 1,6

Ask for latest price list of Ductile Iron Soft Seated Knife Gate Valve, Ready stock to supply of PN 10 knife gate valve

Difference between metal seat valves and soft seat valves?

You will get efficient and thoughtful service from LEFLOW.

Additional reading:
Choose the right gate valve
10 Questions You Should Know About Customized Pneumatic Trunnion Mounted Ball Valves

Metal Sheet Valves Requires grinding, hardening and other precision processing while Soft Seat valves are low processing accuracy, even free-processing

Working pressure of Metal Sheet Valves are Medium or high pressure above 3.5mpa While soft seat valves has Medium or low pressure

Soft seated ball valves working temperature

working temperature lower than 260&#;

Leak testing of Soft seated Gate Valves

Valve Size,

NPS

All Resilient, Seated, Valves All Metal Seated Valves, (except Check Valves) Liquid Test, (drops, min.) Gas Test, (bubbles, min.) < 2 0 0 (1) 0 (1) 2 - 6 0 12 24 8 - 12 0 20 40 > 12 0 28 56 Valve Size,

NPS

All Resilient, Seated, Valves Metal Seated, Check Valves Liquid Test, (drops, min.) Gas Test, (bubbles, min.) < 2 0 (2) (3) 2 - 6 0 (2) (3) 8 - 12 0 (2) (3) > 12 0 (2) (3)

Available Types of Soft seated Gate Valves

A351 CF8 304 Soft Seated Gate Valve

Cast Steel Soft Seat Wedge Gate Valve

CF8M Stainless Steel Resilient Soft Seated Gate Valves

ASTM A351 CF8 Soft Seat Gate Valve

Stainless Steel Soft Seated Gate Valves

ASME B16.34 Soft Seated Gate Valves

Soft Seat Material Physical Properties

Property NBR EPDM VITON Polyurethane TENSILE Strength (kg/cm²) 50~250 500~200 225 400±0 Elongation(%) 100~500 100~500 425 600±0 Max Temp(&#;) 140 140 200 120 Min Temp(&#;) -25 -40 -10 -65 Abrasion Resistance Excellent Fair Good Excellent

Body Material of Soft seated Gate Valves

ITEM ASTM JIS Body,  Bonnet Cast  Steel A216-WCA A216-WCB A216-WCC SCPH2 Cast  Iron A536 FCD450 FC200 Cast  Stainless  Steel A351-CF8 A351-CF8M A351-CF3 A351-CF3M A351-CK20 SCS 13A SCS 14A SCS 19A SCS 16A Stem A479-304 A479-304L A479-316 A479-316L SUS 304 SUS 304L SUS 316 SUS 316L Disc A240-304 A240-304L A240-316 A240-316L SUS 304 SUS 304L SUS 316 SUS 316L

Biggest CF8M Stainless Steel Resilient Soft Seated Gate Valves Supplier, Check ASTM A351 CF8M Soft Seat Gate Valve Pressure Rating

Features of Resilient Soft Seated Gate Valves

• Zero Leakage even at high pressure with double sealing of soft seat and metal seat
• Applies to all fluid lines including pure water, a mixture of sludge and water
• Leakage protection is possible at all times as there is no foreign substances buildup on the bottom of the valve port.
• Price is competitive as material requirements are low with narrow interfacial structure, and it is easy to install even in a narrow space. Reduced packaging and shipping costs due to its light weight.
• Advantageous in cost reduction as it is possible to operate with a small driving force, so that a smaller specification actuator can be applied.
• Reduced repair costs as valve seat, soft seat, can be removed and attached

Advantages of Soft seated Gate Valves

• Metal seats can stand up to extreme flashing
• high temperatures up to and exceeding 1,000° F
• ideal for high erosion or corrosion applications

Disadvantages of soft seated knife gate valve

• High production cost
• If need replace the valve seat, normally required for overall grinding, the field maintainment is not convenient.

Application of soft seat wedge gate valve

• natural gas industry
• chemical storage
• slurries
• normal liquid and gases

Dealer of Stainless Steel Soft Seated Gate Valves, Stockholder of ASME B16.34 Soft Seated Gate Valves

Service Temperature of Soft Seal Sluice Valve

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Service Temperature 150&#;