Gate Valve for HDPE Pipe

Gate Valve for HDPE Pipe is a type of valve designed specifically to control the flow of fluids in HDPE (High-Density Polyethylene) piping systems. HDPE pipes are known for their flexibility, toughness, and chemical resistance, and the gate valves used with them must be compatible with these characteristics. The gate valve operates by lifting or lowering a gate (wedge) within the valve body, allowing or blocking the flow of fluid.

With the popularity of HDPE Pipes, gate valves for connecting HDPE pipes are gaining more and more attention from valve manufacturers. Judberd’s gate valves for connecting HDPE pipes are classified into AWWA C515 standard and EN1074-2 standard. Judberd has designed gate valves with grip ring, flange adaptor and flexible coupling. These products all work on the same principle. When the pipe is pulled outward, the grip ring is driven to move to the narrow end of the ductile iron gland, at which time the caliber of the grip ring becomes smaller under the pressure of the ductile iron gland, thus tightening the grip on the HDPE pipe and achieving self-locking.

Specification

Design standard BSEN1171/EN1074-2

Socket ends:Fitted with NBR/EPDM rubber seal to suit HDPE pipes

Inspection&Testing:BSEN12266-1

Trip O-rings stem seal

Working pressure 16bar

Working temperature -20℃ to 85℃

Operator:Hand wheel,Operating Nut,Gearbox

Feature

1,With Bonnet and Wedge Sealing,Can change stem O type ring without stopping water

2,Bolts position is convenient for assembling and disassembling

3,With brass grip ring for HDPE pipe

Drawing

Material

1，Body Ductile Iron 2,Wedge Ductile iron and EPDM 3,Stem Nut Brass Pb59-1 4,Stem SS420 5,Bonnet Ductile Iron 6,Gland Brass Pb59-1 7,Grip Ring Brass Pb59-1 8, Bolts SS304 9,Gland Ductile Iron 10,Gasket NBR/EPDM 11,Wedge Nut Gasket NBR/EPDM 12,Stem Bushing Brass 13,O rings NBR 14,Dust Cap NBR/EPDM 15 ,Operating Nut Ductile Iron 16,Bolt Carbon Steel 17,Cap Plastic

Dimension(mm)

OD	H	L	L1	L2	A	B
63	240	250	90	310	66	59
75	270	270	95	330	78	67
90	310	280	100	340	93	77
110	360	300	105	360	113	87
125	410	375	105	435	128	110
140	410	375	110	435	144	110
160	450	390	145	450	163	114
200	540	420	155	480	203	150
225	540	420	155	480	228	165
250	600	480	175	540	253	173
280	600	480	175	540	283	188
315	690	490	175	550	318	200

Manual

As the bolt is tightened, the ductile iron gland will be tightened, and then the grip ring moves toward the narrow end of the ductile iron gland, at which time the outer diameter of the grip ring shrinks, thus jamming the HDPE pipe, and when the HDPE pipe comes outward, it will also drive the grip ring to move toward the narrow end of the ductile iron gland, thus reducing the diameter of the grip ring and jamming the pipe more tightly. The locking force of the grip ring on the HDPE pipe is very large, thus ensuring that the pipe will not come out under the pressure of PN16. The following pipe is after the experiment, we can clearly see the grip traces which grip ring made on the HDPE pipe