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DBV Metal to metal ball valves characteristics:

High Temperature Service

General soft seated ball valves working temperature is limited up to 400°F, but metal-seated ball valves are guaranteed for a maximum service temperature of 800 °F.

Low Pressure Reliable Sealing

DBV metal-seated ball valves adopt seat spring structure, which can push upstream seat tightly against the ball surface creating a reliable sealing even if extremely low pressure.

Pressure Test

Metal-seated ball valves maximum allowable seat leakage: Air: ANSI/FCI 70-2 Class V

Absolute Fire Safe Guarantee

YIHUAN metal-seated ball valves are absolute fire safe design. Metal-to-metal contact is designed between ball and seat, where is unconditional fire safe function. Flexible graphite gasket can prevent fluid leakage from between body & seat or body & adapter even if high temperature environments to reach fire-safe purpose. In addition, other sealing components such as stem packing can also reach fire-safe function and prevent external leakage, so all parts of the valve will not be damaged by high temperature service.

Blow-out Proof Stem& Anti-Static Device

As general ball valves, YIHUAN metal-seated ball valves are provided with blow-out proof stem& anti-static device.

metal seated ball valves

Metal to metal seat ball valve material specifications

No.	Part	Material
1	Body	A216-WCB A352-LCB A351-CF8, CF8M, CF3, CF3M, Duplex
2	Seat	ASTM A182-F6+STL, 304+STL, F316+STL, F316L+STL
3	Antistatic Spring	Stainless Steel S.S.316
4	Thrust Washer	PTFE PPL
5	Screw	ASTM A193-B7, B8
6	Limited Plate	1015+Cr. Carbon Steel+Cr.
7	Lever	A216-WCB
8	Gland Flange	A216-WCB A351-CF8
9	Packing	PTFE Graphite
10	Stem	ASTM A182-F6, F304, F316, F316L, F304L,17-4PH, F51
11	Gasket	Stainless Steel+Graphite S.S.316+Graphite
12	Ball	ASTM A182-G6+N, F304+N, F316+N, F51+N
13	Seat Gasket	ASTM A182-F6, F304, F316, F316L
14	Bonnet	A216-WCB A352-LCB A351-CF8, CF8M, CF3, CF3M, Duplex
15	Seat Spring	Inconel X-7505 S.S.304 S.S.316
16	Seat Sealing	Graphite
17	Stud	ASTM A193-B7, B7M, B8, B8M
18	Nut	ASTM A194-2H, 2HM, 8, 8M