TLV M4, M8, and M12 forged carbon steel manifolds incorporate maintenance-free bellows-sealed valves at each station connection. When used as condensate collection manifolds, these products consolidate steam trap locations at lower installation heights, making traps more accessible and easier to install, isolate, test, and troubleshoot.

Features

• Rugged and versatile design minimizes installation area and easily adapts to plant requirements.
• Each line has a built-in bellows-sealed valve, minimizing installation space.
• Good seal with stellite hardened surfaces on valve plugs and valve seats.
• Durable stainless steel bellows eliminate gland leakage.
• Built-in blowdown and drain connections.
• Steam manifold (SM) and condensate manifold (CM) packages include shutoff valves and V1 trap stations.

Safety Considerations

CAUTION

• Operating Limits: Install properly and DO NOT use this product outside the recommended operating pressure, temperature, and other specification ranges. Improper use may result in damage or malfunctions.
• Heavy Objects: Use hoisting equipment for heavy objects (weighing approximately 20 kg or more).
• Hot/Pressurized Disassembly: When disassembling or removing the product, wait until the internal pressure equals atmospheric pressure and the surface has cooled to room temperature.
• Modification: Be sure to use only the recommended components when repairing the product, and NEVER attempt to modify the product in any way.
• Freeze-up & Water Hammer: Use only under conditions in which no freeze-up or water hammer will occur.

Specifications

Model	M4
Steam Outlet / Condensate Inlet	4 per M4 unit
Connection	Socket Welded
Size	DN 15, 20
Steam Inlet & Drain / Condensate Outlet & Blowdown	Socket Welded
Size	DN 40
Maximum Operating Pressure (PMO)	50 barg
Maximum Operating Temperature (TMO)	400 °C

Note: Maximum Allowable Pressure (PMA) is 57 barg. Maximum Allowable Temperature (TMA) is 425 °C.

Materials

No.	Description	Material	DIN	ASTM/AISI
1	Body	Carbon Steel A105	1.0460	-
2	Valve Bonnet	Carbon Steel A105	1.0460	-
3	Valve Plug	Stainless Steel A276-304 + Stellite	-	-
4	Valve Seat	Stainless Steel A276-410 + Stellite	-	-
5	Valve Stem	Stainless Steel A276-410	-	-
6	Bellows	Stainless Steel SUS316L	1.4404	AISI316L

Configuration

The M4 is a 4-way manifold (with four station connections, each with an individual valve unit). The model name reflects the amount of connections: the M8 is an 8-way, the M12 a 12-way manifold.

M4 (for steam/condensate)

M4 with Inner Pipe (Option for condensate)

For Steam Manifolds: A: Steam Inlet | B: Station Connection - Steam Outlet

For Condensate Manifolds: A: Condensate Outlet | B: Station Connection - Condensate Inlet | C: Blowdown Connection

Proper Installation

1. Before installing the product, blow out the inlet piping to remove any piping scraps, dirt and oil. Close the inlet valve after blowdown.
2. Before installation, be sure to remove all protective seals.
3. Prepare a mounting stand. The mounting stand should be less than 160 mm wide (the face to face distance between station connections).
4. Using M12 threaded bolts, attach the manifold to the mounting stand. Install the manifold vertically with the raised "TLV" lettering on the body right-side up and horizontal.

5. Complete the installation by installing the required steam traps and valves.
6. Open the inlet and the outlet valves and verify proper operation.

Screwed Connections

There may be clearance problems when installing traps and valves with threaded connections. To prevent obstructions, offset each line slightly. Install all short lines first, then longer lines.

Inspection and Maintenance

Part	Inspection Procedure
Gaskets	Check for warping and damage
Bellows	Check for cracking, warping or other damage
Valve Seat	Check for build-up, scratches or wear
Valve Plug	Check for build-up, scratches or wear
Body Interior	Check for build-up or scale

Disassembly and Reassembly

Part	During Disassembly	During Reassembly
Bonnet Bolt	Remove with a 12 mm socket wrench	Coat threads with anti-seize; tighten to 60 N·m torque
Valve Unit	Pull straight out being careful not to scratch plug or dent bellows	Insert plug into body, being careful not to dent bellows
Bonnet Gasket	Clean being careful not to scratch body seat	Replace with a new gasket

Troubleshooting

Problem	Cause	Remedy
Fluid leaks from the outlet when closed	Build-up on the valve seat or plug, or parts are scratched/damaged	Clean parts or replace the valve unit
Fluid leaks from the gland area	Build-up on the gland packing, or it is scratched/worn, or bellows damaged	Further tighten the gland nut, or replace with a new valve unit
Valve does not open/close or is stuck	Build-up on the valve seat or plug	Clean or replace part; apply grease to stem screw
Fluid leaks from the bonnet flange	Gasket deterioration or improper tightening torque	Replace gasket or tighten to 60 N·m

Dimensions

M4 Basic Manifold (mm)

L1*	L2	H	H1	W1*	W2	Weight (kg)
135	80	390	250	185	48	17
*At full open position

Socket Welded Connections

DN	φD (mm)	φC (mm)	h (mm)
15	37	21.8	13
20	37	27.2	13
40	64	48.8	13

Manifold Packages

Steam manifolds (SM) include a bellows-sealed stop valve at the steam inlet, and an FS3 steam trap with a bellows-sealed stop valve at the drain. Condensate manifolds (CM) include bellows-sealed stop valves at both the condensate outlet and blowdown connections, and V1 trap stations at each inlet.

Manifold Package	No. of Connections	Length (mm)	Height (mm)	Weight (kg)
SM4	4	160	890	37
SM8	8	160	1390	54
SM12	12	160	1890	70
CM4	4	560	740	53
CM8	8	560	1240	88
CM12	12	560	1740	123