Pressure Seal Globe Valve
Pressure Seal Globe Valve
The body and connecting end of the fully welded ball valve are molded in one piece by a fully welded process. It eliminates the need for flanged connections, reducing potential leakage points and providing greater sealing and reliability. Compact and suitable for buried installation, it can withstand harsh operating conditions and extreme temperature changes.
Technical Specifications
Materials:
Body:
Cast Steel：
ASTM A216 WCB, WCC | ASTM A352 Gr. LC3, LCB | ASTM A217 gr.B, C5, C12, WC6, WC9, WC12
Stainless Steel:
ASTM A351 CF8, CF3, CF8M, CF3M, CK20, CG8M, A351 CK3MCuN etc.
Duplex:
A890 Gr.4A, Gr. 6A (SAF2205, 2507 etc.)
Nickel Alloy:
Monel 400 | Inconel 600, 625 | Hastelloy C27, C22, B2 | Incoloy 800/800HT, 825 etc.
Ball:
ASTM A105 w/ENP | ASTM A350 Gr. LF2 w/ENP | ASTM A182 Gr. F316 | ASTM A182 Gr. F316 w/ENP
Stainless Steel | Duplex SS | Nickel Alloy etc.
Seat:
RPTFE | Nylon | Davilon | PEEK | Tek-Fil® | TFM
Stem:
ASTM A479 Type 410 | 17-4PH | XM-19 | ASTM A182 F316 | Stainless Steel | Duplex SS | Nickel Alloy etc.
Caliber Range
1/2“ to 24” | DN15~DN600
Pressure Range
Class150 to 2500 | PN10 to PN420
Operating Temperature
-29℃ to 560℃ | -20.2℉ to 1040℉
Operation
Handwheel | Worm Gear | Electric etc.
Connection
RF | RTJ | BW
Design Standard
BS1873 | ASME B16.34 | GB/T 12235 | JB/T3595
Features And Benefits
This type of valve is mainly used in fossil fuel power plants under high temperature and high pressure, compared with bolted valves, this type of valve provides absolute safety sealing at the bonnet joint, so that pressure-sealed globe valves can provide tighter service for valve maintenance under high temperature and high pressure environments.
This is the media flow to the double-opening valve, inlet and outlet formed a 180-degree angle. in addition, in order to the valve for a long time, in the valve seat and valve plate sealing surface to be surfacing cast iron alloy, cobalt alloy or carbide alloys. large-diameter valves will be designed by the main valve plate and the sub-part of the valve plate composed of two parts of the media from the valve plate above the valve plate to the valve plate below the operation of the torque to be greatly reduced, the valve seat sealing performance. The valve seat sealing performance is more outstanding.
Short Stroke Lift Lever
Lift lever length is one-fourth of the valve passage for fast switching and improved operational efficiency.
Single Sealing Surface Design
A single sealing surface structure is adopted between the valve body and valve plate to simplify the design and ensure sealing stability.
Main And Sub Valve Plate Structure
Large-diameter valves are equipped with main and sub valve plates, with the medium flowing from the upper to the lower part to optimize fluid control.
Stellite Surfacing Sealing Surface
The valve seat sealing surface adopts Stellite cladding to enhance wear resistance and corrosion resistance and prolong service life.
Maintenance Friendly
The structure is designed for ease of maintenance, simplifying the production process and improving ease of operation.
Inverted Seat Seal Structure
The use of inverted seat sealing structure further enhances sealing performance and reduces the risk of leakage.
Flexible Graphite Packing
Equipped with flexible graphite packing, adapting to high temperature and high pressure, improving sealing effect.
Anti-leakage Bonnet Design
Anti-leakage design at the bonnet connection ensures safe and stable operation.
Bypass Operation Design
Bypass operation function is provided to facilitate flow control and maintenance.
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