China Better Demco Dm Style Gate Valves 7, 500 Psi, 4 in, Pn: J025102-3772142

• Customization: Available
• Temperature: High Temperature
• Type: Direct-acting
• Model NO.: )Series DM gate valves-7, 500-psi WP, 4 in
• Material: Carbon Steel
• Connection Form: Flange
• Pressure: High Temperature
• Actuator: Manual
• Seal Surface: Wedge Gate Valve
• Thread Position of Valve Rod: Inside Gate Valve
• Usage: Regulation, Safety, Flow Control
• Standard: ANSI
• Transport Package: Plywood Case
• Specification: 2′′ 4′′
• Trademark: BETTER
• Origin: China
• HS Code: 8481803990

Product Description

BETTER Mud Gate Valve is equivalent to DEMCO model DM series, which is mainly used for mud, cement, fracturing and water service and are easy to operate and simple to maintain. This series of mud gate valve is rising stem, solid gate with resilient seals with superior design and precision workmanship to meet the working request. Designed for dependable, heavy duty performance in abrasive service conditions,BETTER DM mud gate valves are identically to DEMCO DM series in size and fully interchangeable spare parts can be provided.

Series DM 7500

The BETTER DEMCO DM seat consists of two identical metal wear rings encapsulated in elastomer to form a cylindrical shape with a gate slot and two round ports. The closed gate bears on the downstream wear ring, and the elastomer can provides a drop-tight pressure-responsive seal around the port.

Features and benefits

1. Interchangeable with DEMCO mud gate valves.
2. In-Line field repair ability. For internal parts inspection, or routine maintenance, the bonnet assembly can be quickly removed from the valve body. Parts are replaced as needed, the bonnet assembly re-installed, and the valve is tested and returned to service.
3.Open and close with ease. Double acting threads and rising stem design mean that opening and closing the gate happens quickly, and with minimal effort to rotate the handle assembly.
4.Sight lens included on larger sizes. Allows viewing of the stem for determination of gate position, while also protecting the stem from dust and dirt.
5.Drop-Tight Sealing. Exclusive seat design provides drop-tight shut-off which is accomplished by metal to rubber sealing.
6.Bi-directional sealing design. The gate and stem are separate parts, which allows the slab style gate to move within the rubber seat in response to the direction and pressure of the drilling mud, or other media, flowing through the valve.
7.Extensive Quality Assurance verification and testing prior to shipment
8.Automation is available for 5,000- and 7,500-psi pressure-rated valves.
9.Exclusive seats design for drop-tight sealing
The Series DM gate valve seats use an unique design to provide a drop
tight shutoff in abrasive and erosive service.

Product Parameters

Parts List
Dimensional Data and Weights
Dimension	Valve Seat Port Size for 7,500-psi WP: 4 in [100 mm]
A, length, in [mm]	Weld end	16.00 [406]
	Flanged end, API length	26.38 [670]
	Hammer union end	5in	25.62 [651]
		4in	27.62 [702]
For flanged ends	API ring number	BX-155
	Flange ID, in [mm]	4.00 [100]
	Flange OD, in [mm]	12.44 [316]
	Flange bolts, amount; in [mm]	8; 11/8 [29]
Weight, lbm [kg]	Weld end	281 [127]
	Flanged end	456 [207]
	Hammer union end	5in	379 [172]
		4in	365 [166]
Number of handle turns from open to closed		21.3
B, height, center to top (open), in [mm]		27.53 [699]
C, handle diameter, in [mm]		24.00 [610]

 

Repair Kit	Key No.	Qty.	Description	Valve Seat Port Size for 7,500-psi WP: 4 in [100 mm]				Repair Kit Component Part Numbers
				Group 1	Group 2		Group 3
			Assembly Base Number-NACE Compliant	J025102	J025107		J025108
	1	1	Body	ASTM A487 Gr. 4 Class D				-
	2	1	Bonnet	4130				-
	3	4	Capscrew socket head, 5/8 UNC × 1.75 (long)	ASTM A574 Alloy Steel		18-8 SS		-
	4	1	Gate	41XX with quench, polish, quench (QPQ) nitriding				2171267-01
				410 SS with QPQ nitriding				2139637-02
	5	1	Gate clip	3XX SS				M450505
	6	1	Handle	ASTM A536 Gr. 65-45-12				-
	7	1	Handle screw	CD 1018/26
	8	10	Heavy hex nut, 11/8-8 UNC	ASTM A194 Gr. 2H		ASTM A194 Gr. 7		-
	9	4	Hex head bolt, 5/8-11 UNC × 3.50 (long)	SAE steel Gr. 5				-
	10	1	Housing	HR 1018/22				-
	11	1	Lubricating nipple, 1/8 NPT	Steel				-
	12	1	O-ring, AS-568-216, secondary seal	HNBR				2726268-01
				FKM				J005531-216
	13	1	O-ring, AS-568-228, housing sea	Buna-N				J005526-228
	14	2	O-ring, AS-568-349, wear ring seal	HNBR				2712787-04
				FKM				J005521-349
	15	1	O-ring, AS-568-364, bonnet seal	HNBR				2712426-11
				FKM				J005521-364
	16	1	Relief fitting, 1/8 NPT	Steel				-
	17	1	Retainer	HR 1018/22		17-4PH SS		-
	18	1	Seat assembly	410 SS with QPQ nitriding and HNBR				2139746-01
				410 SS with QPQ nitriding and FKM				2139745-02
	19	1	Sight tube	Clear acrylic				-
	20	1	Stem	410 SS				2140684-01
	21	1	Stem cap	ASTM A536 Gr. 65-45-12				-
	22	1	Stem screw	CD 1018/26				J019159
	23	1	Stem seal assembly with bushing	HNBR and bronze				JN15853-008
				FKM and bronze				JN15853-006
	24	10	Stud (double ended), 11/8-8 UNC × 5.50 (long)	ASTM A193 Gr. B7		ASTM A193 Gr. L7		-
	25	2	Thrust needle roller bearing	Hardened steel				J050911-005
	26	4	Thrust washer	Hardened steel				J050911-006
	27	2	Wear ring	41XX with QPQ nitriding				M452290
				410 SS				2139649-02

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Company Profile

BETTER Drilling Fluid Equipment Industrial Limited was established in 2008 year, and engaged in producing pump products at earlier. The company located in Dezhou, Shandong Province. BETTER not only exports the drilling fluid control equipment and mud system solid control equipment, but also supply handling tools, tong dies inserts, and other oilfield equipment. We would like to provide one-stop purchasing service when our client has a related requirement on handling tools. Now our handling tools products has a great leap forward development. Drill pipe power tong designed and manufactured by the company is a necessary and symbolic tool for mechanized wellhead operation, a batch of automation wellhead tools represented by Iron roughneck developed in recent years creates the new era for drilling machines on the wellhead.

We can supply wellhead product as such drilling pipe power tong, casing power tong, hydraulic power tong, air winch, hydraulic cathead, rotary cathead, casing guide, deadline anchor, Kelly bushing, master bushing, Kelly or swivel spinner, casing tubing coupling bucking unit, Elevator, slip, clamp, manual tong, tong dies and slip inserts and so on.

BETTTER products Handling Tools are manufactured and inspected strictly according to API 7K,8C and ISO Licenses.

BETTER is no way affiliated with any O.E.M. Name and Part Number are for identification purpose only and are not for trademarks or trade names used by BETTER.

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