Detailed Introduction:

Pulp & Paper Industry:
Abrasion‑Resistant & Anti‑Clogging Solutions

Shield provides specialized abrasion and corrosion‑resistant valve solutions for the pulp & paper industry, covering processes from pulping, bleaching to paper machine. Our valves handle abrasive stock, corrosive chemicals, and recovery fluids for reliable operation.

High‑Consistency Stock         Black / White Liquor         Anti‑Clogging        Wear‑Resistant Alloys

Knife Gate Valves

Specifically designed for thick slurries and media with suspended solids. Sharp beveled blade, resilient or metal‑seated, minimal cavity to prevent material accumulation.

Pinch Valves

Ideal for abrasive slurries with high solid content. Full‑bore, unrestricted flow, isolating media within a replaceable sleeve – minimal contact between moving parts and slurry.

HC Ball Valves

Engineered for pulp stocks up to 20% fiber consistency. Specialized trim, enlarged ports to prevent fiber plugging, robust sealing materials, and smooth surface finish.

Specialized Valves for Pulp & Paper

• Diaphragm Valves: Suitable for corrosive and abrasive slurries. Flexible diaphragm isolates valve body from flow path; no internal pockets for solids; excellent throttling control.

• Clamp Valves (Dump Valves): Fast‑acting for batch processes, full unobstructed flow path, durable construction for high‑consistency pulp.

• Specialty Control Valves: Precise regulation of chemical dosing, steam, and stock flow. Anti‑cavitation trim, corrosion‑resistant alloys (duplex stainless steel), advanced positioners.

Material Selection for Durability

• Body Materials: Cast steel, stainless steel (CF8M, SS316), duplex stainless steel, wear‑resistant alloys.

• Trim & Sealing: Hardened materials (Stellite, ceramic coatings), elastomers (EPDM, Viton, polyurethane).

• Special Coatings: Internal epoxy, rubber linings (natural rubber, Neoprene), tungsten carbide overlay for extreme abrasion resistance.

Engineering Advantages for Harsh Environments

• Robust Design: Finite Element Analysis (FEA) optimized structures for pressure integrity and long life.

• Precision Manufacturing: Advanced CNC machining ensures perfect sealing surfaces and dimensional accuracy.

• Customization: Tailored valve specifications – materials, actuation, lining, port sizes – to exact process conditions.

• Rigorous Testing: Every valve undergoes pressure, leakage, and operational testing before shipment.

Engineered for Extreme Challenges

Shield is committed to providing engineered valve solutions that meet extreme challenges head‑on, ensuring maximum uptime and minimum total cost of ownership. Our valves excel in handling abrasive slurries, high‑cycle hydraulic duty, and corrosive process streams.

Related Valves for Slurry & Paper

Engineered for abrasion resistance, anti‑clogging, and long service life in pulp & paper mills.

Forged Check Valve

High‑pressure backflow prevention

Swing Check Valve

Protects pumps and equipment

Lift Check Valve

Robust design for challenging media

Casting Steel Globe Valve

Precise throttling for chemicals

Forged Globe Valve

Exceptional strength for steam

Knife Gate Valve

Cuts through thick slurries

Triple Offset Butterfly Valve

Bubble‑tight shut‑off

Trunnion Ball Valve

API 6D, metal‑seated

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Connect with our pulp & paper industry experts to discuss your valve requirements.

Shield – Trusted partner for the pulp and paper industry. Engineered to handle abrasive stock, black liquor, and corrosive chemicals with maximum uptime and minimum clogging.