Control valve 2-way DN 15-32mm - Gun Metal | Clorius Controls

Name: Control valve 2-way DN 15-32mm - Gun Metal | Clorius Controls
Brand: Clorius Controls
SKU: Control valve 2-way DN 15-32mm - Gun Metal | Clorius Controls

Clorius L1SB – 2-Way Control Valve, DN15–DN32

The Clorius L1SB is a two-way, single-seat control valve with pressure balancing, featuring a gun metal RG5 body and stainless steel internal components. It is used when system differential pressure requires more closing force than a simple single-seat valve, but leakage from a double-seat valve is not acceptable.

Technical Specifications

DN15, DN20, DN25, DN32.
PN16.
Internal threads Rp as per ISO 7/1.
Actuator connection: G1B as per ISO 228.
Flow characteristic: quadratic.
Seat leakage: ≤0.05% of Kvs as per VDI/VDE 2174.
Regulating capability: Kvs/Kvr >25.
O-ring: FPM 75 Shore A.
Gasket: Reinz-AFM34.

Kvs and Dimensions

DN15, Rp 1/2", Kvs 2.75 m³/h, stroke 6 mm.
DN20, Rp 3/4", Kvs 5.0 m³/h, stroke 6.5 mm.
DN25, Rp 1", Kvs 7.5 m³/h, stroke 7 mm.
DN32, Rp 1 1/4", Kvs 12.5 m³/h, stroke 8 mm.

Media and Applications

The L1SB is applicable for hot water, steam, and lubricating fluids. The product page also mentions compressed air, cooling, demi water, heating, solar energy, and steam. Typical use cases include heat exchangers, thermal skids, central heating systems, industrial processes, and marine installations.

Operation with Actuator

Without an actuator, the valve remains open via a spring. It closes with shaft pressure. With a self-acting Clorius thermostat, it closes on temperature rise, while with pneumatic or electric actuators, the action direction depends on the control application.

Installation

Installation can be vertical or horizontal. Up to 170°C, the thermostat or actuator can be mounted above or below the valve. Above 170°C, a cooling unit is required for thermostats or a high-temperature adaptor for electric actuators.

FAQ

When to choose L1SB over L1S?
When differential pressure requires a balanced design for safe closure.

Is it suitable for steam?
Yes, with pressure, temperature, Kvs, and sealing material considerations.

Is it an on/off valve?
Not only. It is a control valve with a defined Kvs and quadratic flow characteristic.

Standard (Options)

Connection (Options)

Material (Options)

Gun metal

Pressure Rating (Options)

PN 16

Flow (Options)

Straight Way

Datasheet and documents

Brochure

Description

Applications

compressed air
cooling
demi Water
heating
solar energy
steam

Art. No.	Description	Size	Item weight	PN	Type of connection
1-2110562	VALVE L1SB DN20, BSP THREADING	DN20	1.3 KGM	PN 16	Rp - female thread cylindrical (BSPT)
1-2110564	VALVE L1SB DN20 FOR SALT WATER,NPT		113.0 KGM	PN 16	R - male thread gas conical (BSPT)
1-2111345	VALVE L1SB DN15, BSP THREADING	DN15	1.0 KGM	PN 16	Rp - female thread cylindrical (BSPT)
1-2111347	VALVE L1SB DN15 FOR SALT WATER,NPT		5.0 KGM	PN 16	FPT - female thread conical (NPT)
1-2111357	VALVE L1SB DN25, BSP THREADING	DN25	1.6 KGM	PN 16	Rp - female thread cylindrical (BSPT)
1-2111358	VALVE L1SB DN25 FOR SALT WATER,NPT		16.0 KGM	PN 16	FPT - female thread conical (NPT)
1-2111370	VALVE L1SB DN32, BSP THREADING	DN32	2.9 KGM	PN 16	Rp - female thread cylindrical (BSPT)
1-2111372	VALVE L1SB DN32 FOR SALT WATER,NPT		28.0 KGM	PN 16	FPT - female thread conical (NPT)
1-2119020	VALVE L1SB DN25+V4.05+SENSOR POCKET		45.0 KGM	PN 16	R - male thread gas conical (BSPT)

Art. No.	Size	d	L	H1	H
1-2110562	DN20	3/4" (DN20)	95.0	46.0	79.0
1-2110564		3/4" (DN20)
1-2111345	DN15	1/2" (DN15)	85.0	40.0	71.0
1-2111347		1/2" (DN15)
1-2111357	DN25	1" (DN25)	105.0	50.0	79.0
1-2111358		1" (DN25)
1-2111370	DN32	1 1/4" (DN32)		64.0	81.0
1-2111372		1 1/4" (DN32)
1-2119020		1" (DN25)