PRODUCT INTRODUCTION There are three type bonnet designs of forged steel flange valves. One is bolted bonnet, the body and bonnet are connected by bolts and nuts and spiral wound gasket. The second one is welded bonnet design, the valve is fully welded and sealed. The third one is pressure seal bonnet, it is pressure seal bonnet construction, and the internal pressure is self-compacting, it normally for high pressure. The seal surface of the pressure seal bonnet forged gate valve is flat or pyramidal and the disc moves in a straight line along the center line of the seat. The stem movement form also has the lifting and rotating stem type for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media.Therefore, this  pressure seal bonnet forged gate valve is ideal for cutting or regulating and throttling. STRUCTURE OF 2500LB PSB GATE  VALVE FEATURES 1. The self-sealing structure can make the valve body of the high-pressure valve and the bonnet connection have a compact structure, saving labor and materials, safe and reliable 2. When the valve is at 2500LB and above, the stainless steel lining is welded on the contact between the inner cavity of the valve body and the sealing ring, which avoids the erosion of the sealing area of the valve body under the high pressure and the occurrence of pitting leakage, thereby ensuring the valve’s Safe long-term operation DATA TABLE OF 2500LB PSB GATE VALVE

NQ	Part Name	A105/F6a	A105/F6aHFS	LF2/304	F11/F6aHF	F304(L)/304(L)	F316(L)/316(L)	F91/F91
1	Body	A105	A105	LF2	F11	F304(L)	F316(L)	F91
2	Seat	410	410HF	304	410HF	304(L)	316(L)	410HF
3	Wedge	F6a	F6a	F304	F6aHF	F304(L)HF	F316(L)HF	F6aHF
4	Stem	410	410	304	410	304(L)	316(L)	410
6	Bonnet	A105	A105	LF2	F11	F304(L)	F316(L)	F91
8	Pin	410	410	410	410	304	304	410
9	Gland	410	410	304	410	304	316	410
10	Gland eyebolt	B7	B7	L7	B16	B8(M)	B8(M)	B8
11	Gland flange	A105	A105	A105	A105	F304	F304	A105
12	Hex nut	2H	2H	2H	2H	8(M)	8(M)	8
13	Stem nut	410	410	410	410	410	410	410
14	Locking nut	35	35	35	35	35	35	35
15	Name plate	AL	AL	AL	AL	AL	AL	AL
16	Hand wheel	A197	A197	A197	A197	A197	A197	A197
17	Lubrication gasket	410	410	410	410	410	410	410
18	Packing	Grapite	Grapite	Grapite	Graphite	Graphite	Graphite	Graphite
19	Stop nut	35	35	35	35	35	35	35
23	Seal gasket	420	420	304	304	304(L)	316(L)	420
24	RS.ring	304	304	304	304	304	316	316
25	RS seal	420	420	304	304	304(L)	316(L)	F91
26	Nut pad	410	410	410	410	410	410	410
27	Packing nut	Cast steel	Cast steel	Cast steel	Cast steel	Stainless steel	Stainless steel	Cast steel

SPECIFICATIONS Size: 1/2″~4″ Pressure Rating: Class 1500~2500 BB,WB,PSB OS&Y Solid Wedge Renewable Seat Rings Thread /SW / BW/Flange STANDARD Design: API602/ASME B16.34/BS5352 Face to Face: ASME B 16.10/BS EN558 End Flange: ASMEB 16.5 End BW: ASMEB16.25 Pressure Temp. ASME 16.34 Test: API598 Special: NACE MR-01-75