Hex Block & Bleed Valves

These valves combine the function of shutoff of process media and allow bleeding of pressure between process and instrument.f

The HG46 provides a quick, inexpensive and compact means of installing gauges and static pressure instrumentation. The use of the HG46 also reduces the number of threaded connections, resulting in fewer potential leak points. The HG46 can be supplied with a bleed valve or needle valve threaded into one of the outlets to allow for combined block and bleed functions in a single, compact unit.
The HG48 gauge/block valve provides three outlet connections to facilitate the mounting of gauges and other static pressure instruments in a variety of positions. The design creates a compact installation with fewer leak points as compared to conventional mounting requirements due to the reduced number of threaded connections. The HG46 can be supplied with an integral hard seat which matches the body material, or with a choice of soft seal materials including PPS, KEL-F, TFE
The HG47 is a roddable, hard seated orifice valve that is ideal for use on high temperature, viscous services - the HG47 provides full port, unrestricted flow. The HG47 features an OS&Y bolted bonnet with weld or threaded connections. The accessible hard seat insert and non-rotating (NRT) stem are machined for precision fit, yet field-replacemable to allow for long service life.
The HG35 gauge valve, with a male inlet and a male outlet, meets the application requirement for a block and bleed valve without the need for a close nipple when connecting to a femal port on a gauge pressure transmitter rated to 6980 psi. The HG35 configuration provides one less threaded connection by utilizing a MALE OUTLET for direction connection into a gauge pressure transmitter.
The HB50 block and bleed valve features a fully packed and backseated block valve along with a bleed valve with directional discharge tube and stem stop. With a gauge or transmitter threaded into its outlet, the HB50 will allow pressure to be bled and blocked for simplified instrument removal. The HB50 can be threaded into a Hex Primary Block Valve (such as the Hex HG46) to provide secondary block and bleed functions on multiple instrument installations.
The HB52 bleed tee is ideal for modernizing outdated, non-bleed gauge installations. During instrument maintenance, simply thread the HB52 into the outlet of an existing block valve. An instrument is then threaded into the HB52 outlet to complete the installation. A second 1/2" side outlet accomodates a gauge or tube fitting for a remote auxiliary instrument.
The HB59 integral block and bleed valve is for more critical services and combines a fully packed backseated block valve and a fully packed backseated bleed valve into a single, streamlined assembly that minizes threaded connections. A 1/2" FNPT adaptor can accomodate a tube fitting for remote removal of bleed waste.
The HB24/25/26/27 series bleed valves are available individually, or optionally threaded into an unused outlet port on a variety of Hex Valve models. Used for bleeding off high pressure media, the HB24 and HB25 incorporate backout stops to prevent inadvertent removal of the stem; the HB26 does not include this feature to allow for steam removal to facilitate calibration through the valve. The HB27 incorporates a "mini-bonnet" (packed) assembly with discharge/drain tube.
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