Set up in 1995, Tonglu Valves Manufactring Co.,Ltd. is one of the leading China block valve manufacturer and supplier in Yongjia County of Zhejiang Province. We manufacture all products strictly conforming to the API, JIS, ANSI, BS, GB, NF and DIN standards. Our oem block valves are available to users on request and are used for municipal works, petroleum, chemical industry, power station, metallurgy, national defense, and scientific research fields.

The Hex HB59 integral block and bleed valve is designed for more critical services, and is typically used on applications where waste must be returned to the line or vessel. The HB59 valve combines a fully packed backseated block valve and bleed valve into a single, streamlined assembly that minimizes threaded connections. A 1/2" FNPT adapter can accomodate a tube fitting for remote removal of bleed waste. Hex HB59 Integral Block and Bleed Valve, stainless steel body, 1/2" MNPT inlet x 1/2" FNPT outlet, 316 SS NRT stem and tip, integral hard seat, Graphite/Grafoil/Graphite packing, 6980 psig (at 100 deg F) max.
Reduced costs and installation time
Tight shutoff and bleed capability in one assembly
Fully backseated bonnets
NRT non-rotating tip stem

Ductile iron construction
NACE MRO175 standard
Lock open/close
Round ports/full or regular opening
Molded nitrile seats provide bubble-tight shut-off
Excellent for abrasive service
Top entry/inline repairable
Sizes1'' through 4'', NPT, EUE and grooved ends
Pressures to 3,000 PSI
18 month limited warranty

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