Knife Gate Valve

Pairing cell, not a vendor claim: AVCO does not name FGD/ash/coal-prep, but its named industries include chemical and wastewater, and the 6100's gates are polished/lapped on both sides with a machined bevel on the bottom edge specifically to cut through solids — the same solids-laden isolation problem the Schurco pumps above are sized for. Flagged as an engineering pairing, not a vendor-stated application.

First knife gate valve captured from any vendor in this project — a distinct architecture from every ball, butterfly, diaphragm, plug and check design in the corpus. The mechanisms are the content: the seat is mechanically locked into the body via a stainless steel retainer ring, and the gates are polished/lapped on both sides with a machined bevel on the bottom edge specifically to cut through solids and seal tighter closed. Meets MSS-SP-81 and TAPPI TIS 405-8. Real discrepancy preserved: AVCO's marketing text references cast iron while its materials list names only 304SS/316SS/Hastelloy — AVCO's own inconsistency, to be resolved with the vendor before quoting cast iron.

AVCO names paper & pulp among the 6100's target industries and the valve meets TAPPI TIS 405-8 — a pulp-and-paper-industry-specific standard that appears nowhere else in this project from any vendor. That is the credential to lead with: not a generic industrial rating but the industry's own knife-gate specification.

The 6100 is the first AVCO product to explicitly name wastewater as a target industry — notable given the rest of AVCO's catalog is pressure/temperature/fire-safety-driven oil-gas-chemical work. Real fit: the solids-cutting bevelled gate is the right architecture for rag- and grit-laden sludge lines where a ball or butterfly valve fouls.

Food & beverage is the first-listed industry on AVCO's 6100 page. 316SS with EPDM is the food-contact-plausible configuration, but AVCO publishes no 3-A or FDA certification for this valve — position it for utility/byproduct/solids-handling duty rather than product-contact service unless the customer confirms otherwise.

Chemical is a named 6100 industry. The Hastelloy body/shim option is the real chemical-service escalation path and one of very few Hastelloy-bodied valve options anywhere in the corpus.

Moderate: AVCO names food & beverage and paper & pulp as 6100 industries and meets TAPPI TIS 405-8, but publishes no 3-A or FDA certification, so this belongs on utility/byproduct/solids duty rather than product-contact service. The chart adds the real caution: white liquor at 80°C drops 316SS to C and sulfite liquor holds it at G, so the Hastelloy body/shim option is not a luxury on hot pulping liquor lines. Sulfite liquor and white liquor are the two pulp-and-paper process fluids in the chart that had no family home before this one existed.