Description
Expand Description to include:
1) detailed MSS SP-81 standard compliance notes and testing (pressure, seat, leakage class);
2) comprehensive performance data (flow coefficients, torque curves, seating life);
3) installation, operation, and maintenance guidelines;
4) material compatibility and media limitations;
5) industry-specific use cases and case studies.
Manual Bidirectional Knife gate Valve is a unidirectional wafer knife gate valve used on industrial pipeline for on-off operation.
The structure of body and seat eliminates clogging shutoff for flow with fine particles. Additionally, beveled knife edge helps
the gate cut through thick media easily. According to different working situation: non-rising stem knife gate valve, wafer knife
gate valve, lugged knife gate valve, pneumatic knife gate valve, electric knife gate valve, manual knife gate valve and bevel
gear knife gate valve are all available
Create a dedicated Applications & Industries subsection detailing suitability for pulp & paper, wastewater, chemicals, and mining, including typical pressures, particle sizes, and service conditions; include short case snapshots and customer quotes.
Features:
1. Body：
a) Integral body with full bore structure ensures smooth flow, easy assembly and smaller shell leakage possibility.
b) Non-groove body design eliminates any potential clogging when valve shutoff.
2. Gate：
a) Beveled knife edge provides strong cutting stress and tight sealing.
b) Gate thickness can be increased to meet higher pressure.
3. Seat：
a) U-shaped elastomer seat provides a peripheral seal along the edge of the gate and ensures tight seal in both
flow directions.
4. Other：
a) Double thrust bearing minimize the torque required for operation
Size: NPS2-48 ( DN50-DN1200)
Connection: Wafer type, Flange type, Lug type, Welded type
Seal type: Soft or metal
Material: GGG40-A356, CF8-A351, CF8M-A351,WCB
| Size Range: | DN50~600mm NPS 2”-24” （Larger size on request） |
| Max Working Press.： | DN50~DN250: 10Bar NPS2~NPS10：150PsiDN300~DN450: 7Bar NPS12~NPS18：90Psi DN500~DN600: 4Bar NPS20~NPS24：60Psi |
| Temp. Range： | -29…+200℃ |
| Seal Tightness： | According to MSS SP-81 |
| Body Material： | Cast Iron |
| Gate Material: | Stainless Steel Chrome Plated, Special Allory |
| Seat Material: | EPDM (120°C) /Viton(200°C) /NBR(90°C) |
| Face to Face: | MSS SP-81 |
| Flange Standard: | GB/T 9113.1, JB/T 79.1, HG 20592, ASME B16.5, EN1092-1 |
| Applications: | Pulp & Paper, Water Treatment，Beverage & Food，Fine Chemical,Power Planet，Steel Industry, etc. |
Place concise CTAs after key spec blocks and near the Applications section: e.g., Request a Quote, Download Spec Sheet, Talk to an Engineer, or Add to Cart with price visibility; ensure CTA language aligns with the primary keyword MSS SP-81 Knife Gate Valve and secondary terms.
Integrate schema.org Product with MSS SP-81 knife gate valve specifics (sku, price, availability, color, material, dimensions) and FAQ blocks addressing common questions (e.g., installation, maintenance, seat material compatibility). Add localized content blocks for top target languages with translated values.
MSS SP-81 Knife Gate Valve, 150LB Knife Gate Valve, 2205 Bidirectional Knife Gate Valve, Lugged Knife Gate Valve, manual knife gate valve
